However, the tip of the muffler where the spark arrestor is located is riveted in, making it hard to remove. Make sure your silencer/muffler has been re-packed lately and properly. There are only two. All FMF pipes come apart for repacking. With a customized FMF setup, you can get the right power, look, and feel for your bike. Installed on Kawasaki kx100 for my daughter and she loved it. Give us a call or chat. We have a lot of customers calling into ask why we do not offer the outter shell or mounting bracket to our canisters. To give our customers the best shopping experience, our website uses cookies. tight fit (yeah, I know."that's what she said"), I'm afraid I will not be able to get it out. We Ship Today! The Ukrainian Tribute Growout is a great opportunity for tomato lovers to get their hands on some unique and delicious varieties. These items can be found byCLICKING HERE. However, the tip of the muffler where the spark arrestor is located is riveted in, making it hard to remove. There are no bolts on the end cap of the muffler to remove or bolt anything. . Discussion in 'Equipment' started by Bombsatb, Jan 19, 2016. Most people don't have to worry about checking to see if . If it is really nasty you will need to clean the carbon/spooge out of the holes before you do this. In this case we do recommend you consult with your local authorized techinician for jetting specs. No screen, so what's to clean? No power loss. $39.99. What is the difference between a Shorty and a standard silencer besides the length? When you buy through links on our site, we may earn an affiliate commission.Copyright ThumperTalk, Inc. - All rights reserved.ThumperTalk is a registered trademark. No power loss. Paul Ondas was FMF's vendor for the WORCS series and he cut the spark arrestor screen off the core and put the core back in my bike.. The end caps are different and harder to get off on the II. FACTORY 4.1 RCT SPARK ARRESTOR INSERT 040638 . FMF developed the Powercore 4 to increase the horsepower and torque throughout the entire power curve. I have a turbinecore 2 spark arrested silencer for my 125, and it leaks oil bad. There is nothing there to clean that can not be done with and aerosol type solvent of some type. All the FMF Q4, Power Core, Quiet Core spark arrestors will fit. Accept. Its this attitude where you respect other uses that makes a difference not whether or not my pipe reads at 94 db as opposed to 98db. For 2-stroke we offer replacement end cap kits which can be found byCLICKING HERE. With the titanium stinger, front cap and cone end cap, you'll shave off tons of weight. Keep this in mind. How do I find out what FMF offers for my Bike or ATV? Typically we would recommend every 15 to 20 hours on your machine to repack, but it differs for every level of rider. Quick Links. For the most part though, all of our pipes will work with a modified motor. Here is a picture of the spark arrestor that was included, the only thing that is not fixed is the largest ring. Another gardener is pla. Just bought a new muffler and was wondering if anyone can confirm that you pull apart the pipe from the bottom end (where there are allen key bolts) and pull the insides out or do you have to drill out rivets at cap to remove end cap? We attend MX, SX, Freestyle, Desert, Enduro, GNCC and Cross-Country events across the USA all season long. $29.99 No Color. FACTORY 4.1 RCT SPARK ARRESTOR INSERT 040638, FACT-4.1 RCT REPLACEMENT SPIRAL RETAINING RING 040677, FMF TITANIUM MEGABOMB HEADER HEAT SHIELD (UNIVERSAL) 040692, YZ250F'19-23/250FX'20-23/450F'18-23/450FX'19-23 TITANIUM KICK SHIELD 040691, FMF TITANIUM HEADER HEAT SHIELD (UNIVERSAL) 040230. (Arrestor pretty lose fit in endcap) by kdxinmt 01:35 pm Jul 11 2010, Post Nothing better then FMF for power and performance and price. But the muffler was still completely together after they took the insert out, and continued with the repacking video. 98 DR650SE 22.5k miles, DG exhaust, weld glob ground, Bajaworx windshield, Shinko 244s, racks/bags, Renthal fat bars, 10w LED lights, LED headlight, hella horns, Mikuni TM 42-6, modded airbox, TwinAir filter, rebuilt shock, gold valve, TopGun spring 7 wt oil, racetec fork springs, 10 wt fluid, Cogent DDC. We have something to suit everyone, from someone looking for a fair priced replacement all the way to that person looking for that factory titanium header. FMF Turbinecore 2 Spark Arrestor Silencer - 2-Stroke Compatible With 01-19 KAWASAKI KX85. Most manufacturers stamp the muffler because that is the convenient spot. Location: West of the West, Oregon. So I hadn't every really thought much about the spark arrestor until yesterday and I decided to remove it since my bike will not be seeing the woods ever again. Spark arrestor for the Factory 4.1 RCT Silencers. Having less backpressure (louder), the more top end power youll have. Wibbs if I remember right yours is a Turbine Core, not the Turbine Core II. There is a smallcircumferentialrib about 1" down from the tip of the muffler, the rib is maybe 1/8" smaller diameter that the rest of the muffler inner pipe. Bloody noisy dirtbikers! If I buy your muffler now, can I get the header later and will they fit? You must have JavaScript enabled for this page to function properly. I pulled out the first section of packing out. When the spark arrestor screens are not required such as at the MX track simply remove two machine screws on each end cap and take out the screens, it's as simple as that. All of our testing during the R&D phase is around a complete FMF exhaust, pipe and silencer. If the glowing persists after this break in period, it is recommended to check your jetting as it is possible your carburetor is too lean. Bombsatb Adventurer. by Mr. Wibbens 07:51 pm Jul 11 2010, Post A properly serviced spark arrestor will not affect nor degrade the performance of your quad. We do it the same reason why Ford makes so many different types of cars and trucks. It also has a scavenging effect on the exhaust port, which will let a fresher air and fuel charge into the cylinder for a more efficient burn. This item: FMF Racing 40670 Spark Arrestor Insert. It was totally ruined. The science behind the Megabomb header may be our greatest engineering accomplishment to date. On their 2smoke silencers, the pipe end is where you take the screws out. I lost the spark arrestor in my 2-1 setup and fmf is unhelpful figuring out which I need. You can also use the "Search by Bike" engine to help narrow down what we offer for your machine. So i took it apart. Gardeners around the world have been growing these varieties for the past 8-10 years and are sharing their experiences with others. FREE SHIPPING ON ORDERS OVER $75 (Continental USA Only). Learn More, Order Status / Track OrderSign in not required. I run a pair of Q4 mufflers. Both the Hi-Flo and Powerbomb headers increase power throughout the entire power band. by Mr. Wibbens 08:41 pm Jul 11 2010, Post Discussion in 'Dakar champion (950/990)' started by onlybetx, Jul 29, 2019. Hi. Don doesnt put in countless hours of R&D time and lost sleep into a product to not have it perform like the way he feels it should. Could always tell where my kid was on the track. Lets start with the exhaust, full race exhaust systems put out a lot of sound because they're smaller to save weight therefore they don't have a lot of packing material inside to help absorb the sound waves. Save Quote. As we all know sound is a major issue, which can effect whether or not we continue to enjoy our sport without offending others. V2 Slip-on ('03 - '24) . FREE delivery Feb 21 - 23 . Select Bike Model. On my 450 it goes in the end cap and is held in by a little bolt. May 23, 2020 #5. spradley wrote: So I hadn't every really thought much about the spark arrestor until yesterday and I decided . Work around until the whole clip pops in, and is secure between the back of the SA and lip on your silencer. Do I need to use my stock OEM exhaust clamp with my FMF muffler? FMF developed the Powercore 4 to increase the horsepower and torque throughout the entire power curve. Tried red loctite on the bolt . The rumor mill has created several very creative meanings that we dare not share. What tricks can I do to make it quieter? Make sure Spark Arrestor doesn't come out. My two stroke passes with a fair margin with an FMF turbine core II silencer. Read through the information we have available for both pipes and silencers to get a pretty detailed picture in your head on how each of our products are making power and how they all interrelate. There are two criterias to look at, performance and features. My owner's manual recommends periodic removal of the round plate on the end of the exhaust and a brushing to clean the spark arrestor of carbon. A spray down with brake cleaner or carb cleaner would probably do the trick to remove any spooge. Spark Arrestor. We build our mufflers to be fully interchangeable between all of our products and stock components. SPARK ARRESTOR, T-5 & TI-6 ( F ONLY MODELS) CRF150 12-17, CRF250/450 12-13, KXF250/450F 12-16, YZF250/450 12-15, RMZ250/450 12-15, . cleaning the spark arrestor on FMF Core Turbine II Pipe. If your apparel doesn't fit right, you'll get FREE SHIPPING on the first exchange! On a big bore four frequent high speed riding will also shorten the life of the media. No need to drill the rivets out and remove the "turbine" spark arrestor unless it needs goo cleaned out of it. The Powercore 4 spark arrestor muffler. by Mr. Wibbens 06:25 pm Jul 15 2010, Post Post Reply. This was once called our Torque pipe, but it did not include the thicker steel construction. m304051; Mar 17, 2004; Canadian Daves JustKDX; Replies 5 Views 1K. Free shipping on many items | Browse your favorite brands | affordable prices. Also with online mail order companies check which ones offer international freight. Sign up to receive the latest news and deals from FMF Racing. Remember, not all the sound comes right out of the exhaust. Removing the spark arrestor may have an effect on jetting. you just have to drill it out with a bit the same size as the head of the rivet. How much power will I gain using FMF products and will I notice a difference? Unfortunately Pete, there are those among us who will cut off their nose to spite their face. Universal Factory 4.1 SL 4-Stroke Silencer by FMF Racing. The spark arrestor sits just inside the end of the muffler tailpipe and is attached with Allen screws. Can I add a Spark Arrestor to my existing 2-Stroke silencer? What combo of pipe and silencer works best on my bike? FMF developed the Powercore 4 to increase the horsepower and torque throughout the entire power curve. by kdxinmt 05:37 pm Jul 11 2010, Post As it comes out work clockwise (or rotate spring ring counter clockwise). What pipe and silencer do I use if Ive had motor work done? 49 matches. There are a set of allen head screws at the base, but I believe this is only for repacking the muffler. The Shorty will give you even more throttle response and low end power. Eg: If around houses on transport sections for example not to be a d#@ckhead and ride like its the last 100m of the race of your life or like on my last ride we came across some horse riders and all switched off bikes and rolled past the horse riders till at a respectable distance. FACTORY 4.1 RCT 94db W/SPARK ARRESTOR INSERT 040639, 2016 KTM FACTORY 4.1 RCT QUIET INSERT 1-1/2 SPARK ARRESTOR 040678, HEX Q4/F4.1 RCT QUIET CORE S/A INSERT 040688, ULTRA QUIET F4.1 RCT QUIET CORE S/A INSERT 040689, YAM YZ250F'14-18/450F'14-17 CARBON HEAT SHIELDS-SET 040674, YAM YZ250F'19-22/WR250F'20/YZ250FX'20-22/YZ450F'18-22/WR450F'19-20/YZ450FX'19 LFT CRBN HEAT SHIELD 040684, SHORT STRP MNT W/RUBBER SLEEVE - PCORE 4, Q, Q2 040196, MED. Learn More. Learn More, Order Status / Track OrderSign in not required. This also creates even more power. . On a 2-stroke, the pipe has the biggest effect on what type of power the engine makes and when, the silencer is secondary to that. Fatty pipes are designed to give the engine an all around power increase. That's why we've chosen to carry the most popular brands, including Yoshimura, fmf, Pro Circuit, Lexx and more. Unfasten the Allen screws with an Allen wrench and slide the spark arrestor out of the muffler tailpipe. Screen arrestors come in different ratings depending on how . We recommend using high temp silicone for an improved seal. 4.8 out of 5 stars 7. This is a great universal spark arrestor for 2-stroke machines! Shop official FMF Racing dirt bike & ATV mufflers and exhaust parts, exclusive apparel, t-shirts, hats, goggles, and sunglasses here. Bloody noisy dirtbikers! #EE40-212 Fits: `18-21 KTM 85 SX It was suggested or required for riding in the woods or parks to prevent fires. We have the best prices on dirt bike, atv and motorcycle parts, apparel and accessories and offer excellent customer service. Put the SA in the silencer, and make sure it goes in all the way. All FMF 4-Stroke slip on's come with the Spark Arrestor Sound Insert included . It seems to be some kind of press fit design. click here. Remove the FMF Q2 spark arrestor from the muffler and discard the part. Locate the Allen screws inside the lip of the tailpipe on the FMF muffler that secures the FMF Q2 spark arrestor to the muffler. . Kawasaki MX & Off-Road Dirt Bikes. Dirt Bike , ATV, UTVs Accessories. Several companies sell new packing just make sure you get the 2 stroke packing and not 4 stroke. FMF Racing does not ship anything overseas to retail customers. Remember though, with 2-stroke tuning what you might consider a slight/small change has the potential of being a lot bigger than one might think. Most dirt bikes come with a spark arrestor pre-installed, but some do not. An old Connecticut Ag Experiment. . a rubber mallet id a must as well for breaking loose the old silicone. From Fort Vancouver Yellow Pear to Santa Anna, these, This website uses cookies for functionality, analytics and advertising purposes as described in our. Awesome! Is normal that my Megabomb or Powerbomb glows bright red? Check your local shops to see what distributors carry FMF Racing products in your country. by tmx 08:40 am Jul 18 2010, Powered by phpBB Forum Software phpBB Limited. Yeah just gets rid of the spark arrestor sticking out of the end cap look and definetely makes it louder. This isn't something you'll have to take on and off, as all of our 2-stroke Spark Arrested silencers have the "Turbine-Dampening System' built into the core. Our main goal is to test, develop and produce exhaust products, and thats what we do best here. $159.95 $ 159. And I cant find any other SAs that fit the profile with a smaller diameter, (You must log in or sign up to reply here. If youre looking for an all around power increase we recommend running 11-13 discs with the quietcore out. An FMF Rev pipe probably wouldn't be the best combination with a motor that was set up for tons of low end power. I have never done anything with the spark arrestor section, just the main packing. Pro Circuit also makes some slip-on type systems for the DR650. If you are concerned about a possible loss of power due to the stock spark arrestor, don't be the stock 3 baffle muffler and head pipe are the restrictions on a Z400 not the spark arrestor. Best selection, low prices & orders over $89 ship free. just wondering if it would work. Many customers do just the slip on muffler, and re-use the stock header, but you can also add an FMF PowerBomb or MegaBomb header if you so desire. Always a good option for a spark arrestor. So I'm turning to you guys to help me and the next "Kook" out on how to install and remove the SA. Watering every day with just a teaspoon or two works well. 2012 KTM 350 EXC-F. This is our favorite exhaust system if you are off-roading your WR250R/X. If you have any questions that cannot be answered through our website, please call our dedicatedstaff members here at FMF Racing 310-631-4363 from 8am to 5pm Western time. spark arrestors, aluminum pipe guards, silencer packing and more. Louder than the Q4. Depending on what model silencer you run with the stock pipe will determine how they work. Approximately 99db stock or about 94db with optional Quiet Insert installed. Put the SA in the silencer, and make sure it goes in all the way. Gains will be similar to our Shorty. . Pipe measurements are pretty precise so even a small dent can change how the pipe works. The Powercore 4 spark arrestor muffler. It turns out that pure sand can also be used for seed starting. This also has a Forestry Approved Spark Arrestor. All rights reserved. You cannot add a spark arrestor screen to any existing 2-stroke silencer. By Dwarf Mr Snow, Fred's Tie Dye, Saucy Mary, Sweet Scarlet, Kangaroo Paw Green, Idaho Gem and Banana Toes are just a few of the varieties one gardener is growing in a 4x8 bed of "bulletproof" tomatoes. TW200 '87 - '24. Our headers, whether it be the PowerBomb or the MegaBomb, are fitted to match an FMF series muffler. If you get lost and start a fire pray they'll never find you. For more top end, add more discs and for more bottom end, run less discs with the quietcore installed. To . www.denniskirk.com. Available as optional Spark Arrester for select Dirt Bike models; Kit Includes: 1 x Spark Arrester Insert; 1 x End-cap . Please keep in mind FMF's jetting specs are based on a stock motor with an FMF pipe. Use what the FMF Factory teams use! The packing turns into a slime type of something and just starts plugging the center section up. Surely there would be no power difference? Notify Me. Free, easy-to-get money that youcan spend on future orders. USFS approved. Thanks, I sent a PM, if I don't get a response in the next few days I'll give FMF a call. Is it just for a different exhaust note? By continuing to browse our site you agree to our use of data and cookies. All times are GMT+10. We recommend you call one of our customer service representatives at 310-631-4363 before you make any purchases to verify the fitment on your machine. Maybe I should clarify a little bit. Power, performance, and personality a new dirt bike exhaust can give you that and more, especially if its from FMF. I got it cleaned out pretty good with a wire brush and aerosol cleaner as suggested. Always a good option for a spark arrestor. Someone looking for a smooth quiet ride probably wouldn't be happy in a 4X4 Turbo Diesel. The FMF spark arrestors slide right in to the Akros once the baffles are removed,. STRP MNT W/RUBBER SLEEVE - PCORE 4, Q, Q2 040197, LONG STRP MNT W/RUBBER SLEEVE - PCORE 4, Q, Q2 040198, FREE SHIPPING ON ORDERS OVER $75 (Continental USA Only). Don't let the lower price fool you into thinking they won't perform as well as the titanium versions though. Nothing short of the utilization of plastic . We do recommend a light bead of high temp silicone with every application around the inner diameter of the mid pipe that slips over your header. Shop for Exhaust, like FMF Factory 4.1 RCT Spark Arrestor Insert at Rocky Mountain ATV/MC. Thread starter mojoscojo; Start date Sep 5, 2003 Quiet on the trail as well as on the sound meter. For the Best Selection of In-Stock MX, ATV & Motorcycle Performance Parts. Does anyone run fmf mufflers? Here's what you need to know about the project. When you buy through links on our site, we may earn an affiliate commission. FMF Q SPARK ARRESTOR SILENCERs. If your apparel doesn't fit right, you'll get FREE SHIPPING on the first exchange! I started shoving the SA down the muffler, but it is an. AMA and FIM enduro legal. It seems to be some kind of press fit design. Why is my pipe louder now than when I first purchased it. This pipe takes a little from the bottom and puts it up on top to keep it screaming. A spark arrestor is a metal screen that goes in the tailpipe of your dirt bike and would keep any sparks from flying out the back of the tailpipe and lighting a wildfire. Proudly made in USA. P-CORE 4 HEX S/A INSERT 040670. You are viewing a combination of machine-specific and universal parts. Product # 040638. Free, easy-to-get money that youcan spend on future orders. Sign up to receive the latest news and deals from FMF Racing. However some systems can benefit from jetting changes in fact with some two strokes it may be required to prevent engine damage. Generally youll see a 5%-20% increase over stock depending on your application, but like jetting there are many variables to contend with. Use a screw driver and install one end of the clip between insert and silencer. We'll take a look and remove the review if it doesn't follow our guidelines. We offer our Hi-Flo and Powerbomb headers either in stainless steel or titanium. Just be careful and you will be able to do it several times before replacing can entirely. 99. There are a set of allen head screws at the base, but I believe this is only for repacking the muffler. Depending on how big and where the dents are will determine how much power youll lose. Shop FMF @ https://www.mxstore.com.au/brand/fmf/?nview=noneWatch this short video to learn how to insert a spark plug arrestor into your FMF exhaust system!-. 2 One it acts like a pre-muffler to knock down the sound level a bit and two increases power by increasing the rate in which the header can flow. Home Forums Home > Bikes > Orange Crush (KTM) > Dakar champion (950/990) > More backpressure (quieter), the more bottom end power youll have. http://www.youtube.com/watch?v=cG2Ct26TFmc, Demolition derby with badass girls and enjoyed everything, Hot babe with gazoo enjoys being fucked hard. Can I run one of your headers with my stock muffler? 2023 ft. RotoMoto, Zach Osborne doesnt like Probation Penalties in Supercross, They Can Rub Me But I Cant Rub Back, Eli Tomac Explains His Line Choices on Oaklands Very Technical 2023 Supercross Track. Good friend of mine bought an 04 YZ250, and one of the springs broke on an afternoon ride. Click hereto view our jetting guides. 2023 | Rocky Mountain ATV/MC. MFR. Expect similar gains with our silencers on a stock pipe as you would when using it with an FMF pipe. The spark arrestor bolt was keep getting lose. The core of the muffler can be removed by taking out allen bolts. This video will teach you how to properly inset a spark arrestor into your existing FMF exhaust system. FACTORY 4.1 RCT SPARK ARRESTOR INSERT 040638. Find many great new & used options and get the best deals for FMF Racing Powercore 4 Spark Arrestor Slip-On Muffler 44451 at the best online prices at eBay! Sign in or create an account to get RM cash on orders and open more site features. However, when potting the seedlings into Promix, they need less water than before. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Do dents in a pipe make a big difference in power, and can you fix them? 3.0 out of 5 stars 3. Last but not least to the 2-stroke line, the "Q-Stealth". Proudly made in USA. Ok i wont, plus i think the rivets are holding all that in. It's easiest to create a Word docume, Growing Tom Wagner's Varieties of Tomatoes: A Gardener's Guide With Tips & Advice, Tom Wagner is a renowned horticulturist who has created several varieties of tomatoes, including the popular "Fort Vancouver Yellow Pear", "Pennsylvania Catchfly", "Santa Anna" and "Sunspot". Fisch Moto: They make easy to install USFS Spark Arrestors that fit 20mm-45mm outlets. Only 4 left in stock - order soon. you just some 2 stroke packing(fmf sells it.$10), some masking tape, and some high temp silicone sealant. In some cases the SST model pipes will only work with the SST model silencers. There is a spark arrestor insert that was included, but the previous owner only ran on tracks and did not ever need or install the spark arrestor insert. Or fastest delivery Feb 16 - 21 . You will see the majority of your power increases on the low to mid range as well as broadening out the mid to top end over stock. Heat resistant gasket maker , J-B weld around the spark arrestor. The Powercore 4 spark arrestor muffler. remove rear end . There are many companies and dealers that can beat your pipe back into shape. Our Turbinecore and Turbinecore 2 are our Forestry Approved Spark Arrested silencers. Stock exhaust systems typically don't offer a spark arrestor option though it might come pre-installed on legit trail bikes. The three silencers we offer with spark arrestors are the Turbinecore's, Q Series and the Q-Stealth's. Here's everything you need to know. There are a few instances where our muffler will only fit our header, but that's because we weren't able to get the gains/fit we wanted with out making it an FMF only version. It looks like a flat split key-ring. Yellow Pages Directory of Spark Arrestor, Spark Arrestor manufacturers, Traders, and Spark Arrestor, Spark Arrestor Suppliers & Dealers in Kochi, India. Post reply Similar Topics. Make sure Spark Arrestor doesn't come out. The turbine core is a mechanical type S/A not a screen type. In fact, thats what sets FMF apart from their competition options. I repacked my powercore 2 and it was VERY simple. Because it's smaller you'll see even more weight savings and a louder sound level. In this video we do a sound comparison of with the spark arrestor and without. by 01twostrokingfun 06:29 pm Jul 15 2010, Post Thanks, and if you have any other advice, please share. Here is a picture of the muffler, as you can see at the end cap there are only rivets, and inside the muffler there are no bolts of any sort. FMF Factory-4.1 RCT Anodized Titanium Silencer with Carbon End Cap $517.99 . A two stroke running a little rich on the oil ratio will saturate the silencing media very quickly. Remove ads, support ADV. Also your system performs best and will last longer when the silencer is properly maintained. The reason for this is because all of our 2-Stroke silencers that have spark arrestors, are builtinto the actual core as a "Turbine Dampening System" that is welded to the core and isU.S. Forestry Approved. Also when a test is being performed, make sure you've got the transmission in neutral, with the clutch pulled in, this will also keep some of the noise down. We do not necessarily look for the fastest riders as much as we look for whom we feel would be the best representatives for FMF Racing. 5-7 oz Orange, mid season). Mar 17, 2004. I started shoving the SA down the muffler, but it is anextremelytight fit (yeah, I know."that's what she said"), I'm afraid I will not be able to get it out. Using a Powercore or Powercore 2 silencer will give your bike increased throttle response, a lighter and higher quality silencer with that factory look and sound. They may have tested their motor combinations with a specific pipe, which would give you the same type of gains that they saw. Tom Wagner's Varieties: A Gardener's Guide Adventure Rider. . 6 bikes all going for it is going to be loud irrespective of db reading.This doesn't mean that common sense doesn't prevail in all situations. Free delivery for many products! Here is a picture of the spark arrestor that was included, the only thing that is not fixed is the largest ring. Don't touch the part that has the turbine in it. 9,427. There are a few things you can do to decrease the amount of sound your bike/ATV is putting out. For 2-Strokes and 4-Strokes Our stainless steel headers offer you a lower priced header with increased durability compared to our titanium versions, because of the material and its lower costs and MIG and TIG welding. rib about 1" down from the tip of the muffler, the rib is maybe 1/8" smaller diameter that the rest of the muffler inner pipe. With thicker 18g steel construction, it will take the punishment you can throw at it. You are using an out of date browser. Read All Reviews. I've been looking all over the internet trying to figure out how the hell to install or remove this insert, its unlike by old PC spark arrestor. At Rocky Mountain ATV/MC, we know dirt bike exhaust systems. One word really, choice. More packing volume-longer time between repacks. Check the in the "Search by Bike" to see what is available for your machine. You can bolt on a Megabomb with an existing FMF Racing slip on for as much as a 3hp boost, plus the Megabomb actually reduces noises levels by as much as 1.5dB. Anybody ever heard of this????? I like it better than the 2.1 for it's smaller size, Give us a call or chat. Removing the FMF Q2 spark arrestor from an FMF muffler is not difficult and can be done in just a few minutes with an Allen wrench. FACTORY 4.1 RCT 94db W/SPARK ARRESTOR INSERT 040639. $35.99 Part #: 436390 Mfg Part #: 040671. $269.99 $ 269. by skythrasher 02:33 pm Jul 11 2010, Post Sponsored. I repacked my powercore 2 and it was VERY simple. FMF Spark Arrestor Insert - 4.1 RCT | 040638. There is a circlip you have to remove to get the spark arrestor out. Our spark arrestor screens are United States Forest Service (USFS) Approved for forest or off-road riding. Perfect application for adapting a performance spark arrestor to older bikes Comes with a kit of hardware including a mounting bracket, spacers, shaped stinger tube, . And an allen wrench to take out the screws to take it apart. We also make different spark arrestors for the different years of our four-stroke exhaust systems. Think of the SST as a mix between the Fatty, and the Rev pipe with a little help from the rear SST section. Shine some light on the subject and you'll see what I am talking about. The Powercore 4 spark arrestor muffler. Also we have our"Q" silencer which takes our Turbinecore 2 to the next level of being sound friendly. Exhaust Accessories. What's the benefit to doing this? I couldn't even find any instructions on the FMF site on how to remove or install the SA or quiet inserts that are offered for this bike. If your definition of power gains is, substantially increasing horsepower & torque, rate of acceleration, and the important fun factor, then yes you will gain lots.