trailer << /Size 53 /Info 16 0 R /Root 19 0 R /Prev 111069 /ID[<725f9507b0e544a96d5e4fbfdd35a415>] >> startxref 0 %%EOF 19 0 obj << /Type /Catalog /Pages 15 0 R /Metadata 17 0 R /PageLabels 14 0 R >> endobj 51 0 obj << /S 74 /L 177 /Filter /FlateDecode /Length 52 0 R >> stream We use data about you for a number of purposes explained in the links below. MotoSport gives you one of the largest FMF exhaust selections on the web whether you ride a 2-stroke, 4-stroke, Motocross or trails: Don't get exhausted looking for the right exhaust system, just stick with FMF and MotoSport. 0000008045 00000 n 0000001418 00000 n You can also use the "Search by Bike" engine to help narrow down what we offer for your machine. Enough talk, let's get started with tuning. Generally youll see a 5%-20% increase over stock depending on your application, but like jetting there are many variables to contend with. I have a Turbinecore for my '03, doesn't have a screen in it like some do, something in the flow through the end cap (thus the "turbine" in the core) get's it done. 0000008520 00000 n Address 1930 Carpenter RD SE Lacey, WA 98503-2915 United States of America Phone: 360-350-0557 Email: tech@jdjetting.com 0000004582 00000 n Marty's passion for winning was an integral part lighting the spark of innovation, and creating our insatiable drive to evolve and refine our products for fifty years. Similarly, a trip to the beach might require some adjustment if you last rode in the arid desert. 0000001417 00000 n You probably wouldn't "have" to change your jetting. 0000001417 00000 n 0000071377 00000 n 0000001625 00000 n If sound is a concern make sure you have the appropriate muffler installed on your machine. This pipe offers a new power band that wasnt available in the past, with its new technologies. If you change all three you'll never know what jet posed the air/fuel mixture problem, you'll overcompensate to lean and create a bigger puzzle then necessary. 0000009098 00000 n CgZbD#Dh:Q7hO]R`]NIKf`5~ 40^QO.`M?6+/6E|_havzE[$aQG)+'FOfc&hOd!izt/~tjEnY Thanks! You don't get more exotic then titanium. The Fatty Gold Series Pipe is constructed of nickel-plated 19 gauge carbon steel which offers maximum durability and corrosion resistance. 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. 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. 13 Reasons Why Your Dirt Bike Wont Start & How To Fix It, Why Your 2 Stroke Is Bogging & How To Fix It. Last is the main jet. Always test the jetting after the engine is fully warmed up or you'll get inaccurate results. Both the Hi-Flo and Powerbomb headers increase power throughout the entire power band. An air screw setting that is perfect in the cool morning air will likely be too rich in the heat of the mid-day. More tractable power andimproved throttle control, Provides power gains throughout entire power band, Carbon steel with a nickel-plated finish for maximum durability, FMF Racings Tru-Flo stamping process ensures a perfect fit and optimum performance. 0000009080 00000 n Check your local shops to see what distributors carry FMF Racing products in your country. 0000004605 00000 n Someone with a good understanding of jetting can get you in the ball park, but you need to do the testing to determine the correct jetting yourself if you want it right. Jets are generally numbered according to flow, so a 220 will be 10% richer than a 200 for example. The MegaBomb header is revolved around our Supercross/Motocross riders and racers. Unfortunately, it's not something to deal with later and keep putting off. 2022. Having less backpressure (louder), the more top end power youll have. Hey Sam, first of all, what bike do you have and what jets are currently in it? Your piston looks like it hadessentially no carbon build-up and may have already had a lean condition, which probably contributed. Now is the time to determine if you have the correct pilot installed in your carb. Why does FMF offer so many different types of exhaust systems? Now granted, only knuckleheads ride like that, but that's his style. Temp, elevation, humidity - all the stars were aligned. Repack it when you get it. If it's an aftermarket silencer and has a spark arrestor, it'll have"U.S.F.S. Depending on how big and where the dents are will determine how much power youll lose. We attend MX, SX, Freestyle, Desert, Enduro, GNCC and Cross-Country events across the USA all season long. This pipe gives an all around power increase similar to the Fatty, yet gives it even more mid and top like the Rev without sacrificing low end. Due to the huge dust cloud, that was not possible or safe to do. LEGENDARY 2-STROKE POWER FATTY PERFORMANCE FOR TRACK, TRAIL AND ANY PLACE YOU WANT TO SET FLIGHT . It must have literally been on the leanest jetting for the stock exhaust , and the stock exhaust must have sucked big time for the FMF to make that much difference. 0000007493 00000 n 0000071455 00000 n On a big bore four frequent high speed riding will also shorten the life of the media. The MegaBomb also works great in tight woods and technical single track trails, like most GNCC races. The needle can make all the difference in the world for the power of the machine in most situations, as it controls the throttle range that most riders spend most of their time using. 0000004606 00000 n This is the header that helped win the 2011 AMA Supercross, 2011 AMA Motocross, and 2011 Motocross of Nations Championships. Depending on what type of riding you are doing, we offer a wide variety of set ups. Most newer dirtbikes have pretty good exhausttuning, so an FMF will help, but not make a tremendous difference. FMF sells replacement packing for all of our systems. No matter Other aftermarket motor parts may affect these specs; you would need to contact the manufacture in question fortheir jetting specs as necessary. 0000001416 00000 n 0000038687 00000 n Someone looking for a smooth quiet ride probably wouldn't be happy in a 4X4 Turbo Diesel. The FMF Factory Fatty pipe has been a staple of FMF's two-stroke line for many years, and FMF has pipes and silencers that fit 2005 to 2018 YZ125s. If you cant clean up the small-throttle jetting on your bike no matter how lean you go with the pilot or the needle, the slide is the next step. Search within a riding style, select an option, Free shipping on orders over $79 to Illinois, Selection will refresh the page with with localized information, Selection will refresh the page with new results, Carson Brown Quits Dirt Bikes to Attend College, 2023 Indianapolis Supercross Photo Gallery, Pilot Jet - this controls the amount of fuel when idling, Main Jet - this controls the fuel when you open up the throttle (between 50 and 100 percent power), Jet Needle - this controls the fuel when you open and close the throttle (between 20 and 80 percent power), Needle Jet - this is what the jet needle pops in and out of (between 15 to 60 percent of throttle, Low and high altitude custom designed triple taper needles, Dyno tested and developed with settings from sea level to 12,000 feet elevation, Increase horsepower through the entire powerband, Includes charts to get your exact jetting, regardless of your elevation, Complete kit to rebuild O.E.M. Since titanium is a higher grade metal, these headers are priced higher compared to our stainless steel versions. 0000006535 00000 n USFS approved spark arrestor. Posted on Jun 25, 2009 Anonymous Contributor 2 Answers HdIr0E>N" $^ [Lb&t&EM:5zm#np'miTm=)L0k"RmB| $j>OqX!+"[`(\f6 Yb`1 o*R1"G)7 BcNb$ANxNu$UA!gG p]e>tb)hd(iTaR;}-2=xM ,:Y4 l8([RwX\&:aSi8W Z r#VVh1'?VaL!RCTTj'RC[qyI}V Su Typically we would recommend every 15 to 20 hours on your machine to repack, but it differs for every level of rider. The same goes for reeds that dont seal properly, and a silencer that needs re-packing. Now its time to work on the needle. Main Jet 165 2003 Pilot Jet 52 Needle STOCK Clip Position 2ND Air Screw 1.5 out . ]{ endstream endobj 27 0 obj 901 endobj 28 0 obj << /Filter /FlateDecode /Length 27 0 R >> stream With a loss of backpressure at the exhaust port you will lose low end power in order to gain top end. 0000007504 00000 n 0000049988 00000 n Standard headers with aftermarket silencers. For more top end, add more discs and for more bottom end, run less discs with the quietcore installed. Once you have determined (and installed it if its necessary to change it) the correct pilot jet size, and tuned the air screw for the fastest idle, its time to tune the air screw for the best throttle response. [TC[N1&9/+k-Q2Z|P5-' @8&j }obk!%;yzcx/6\eNQ:.eXibzV@ 7s.hx0=bYa&v7L^XhB\9q"W9j,)7"15qrU%LPyL"s=] G | endstream endobj 25 0 obj 715 endobj 26 0 obj << /Filter /FlateDecode /Length 25 0 R >> stream Both are incorrect fixes for plug fouling. The Q-Stealth is living proof FMF is the only exhaust company committed to bringing new technology to the 2-stroke enthusiast. You will like the gnarly for single track. Drop your email here to be notified when it is available. Make sure your silencer/muffler has been re-packed lately and properly. . Expect similar gains with our silencers on a stock pipe as you would when using it with an FMF pipe. In 1973 Don Emler created FMF out of a desire to go faster. 0000001855 00000 n Air Screw 2.0 out Main Jet 160 1995 Pilot Jet 45 Needle STOCK Clip Position 3RD Air Screw 1.5 out Main Jet 158 2001 Pilot Jet 52 Needle STOCK Clip Position 2ND . All of our testing during the R&D phase is around a complete FMF exhaust, pipe and silencer. Installing jets of different sizes helps increase/decrease the fuel/air ration depending on what your bike requires. `f\#kw'J'Ea[2Afr 9RjqO kFCTjAv' ! Use the following suggestions when using a FMF Fatty, Factory Fatty, Gnarly, Rev or SST exhaust pipe. Call our toll free line 1-888-676-8853, or check out our 2-stroke exhaust guide and our 4-stroke exhaust guide. I have no idea what to look at its only 3 months old with 30 min ride time on it. You have successfully joined our subscriber list. 0000001795 00000 n 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. Please keep in mind FMF's jetting specs are based on a stock motor with an FMF pipe. 0000009119 00000 n Also make sure all your nuts and bolts are tight so they don't rattle. Ok, probably not. 0000002790 00000 n The only real difference in the two is with the pilot circuit. 0000008499 00000 n Tell us what you love or what we need to fix. This pipe will appeal to most people that are happy with the stock power band and just looking for more useable power everywhere. Please keep in mind FMF's jetting specs are based on a stock motor with an FMF pipe. 0000001623 00000 n Once was on a kawasaki 100 trail boss. It is stock. 2-strokes have an air screw that you screw in to make the jetting richer, and screw out to make the jetting leaner. Refer to our silencer information for specific features and power gains by product model. Trail-Tech clamp, 13t sprocket,Trail-Tech High bend bars pro-flo UNI ,ac propegs, ac front bumper, ac rear grab bar spr rev box, pep streering dampner. 0000004605 00000 n Air Intake Changes. We recommend Maxima Castor 927 High Performance 2-Cycle Oil. 0000001140 00000 n 0000009682 00000 n Visit this link for instructions how to enable JavaScript in your web browser. Standard airbox with performance filter. Shop official FMF Racing dirt bike & ATV mufflers and exhaust parts, exclusive apparel, t-shirts, hats, goggles, and sunglasses here. Quiet on the trail as well as on the sound meter. We build our mufflers to be fully interchangeable between all of our products and stock components. trailer << /Size 53 /Info 16 0 R /Root 19 0 R /Prev 111781 /ID[<103c4b523323f97606a72d07bbd30ef6>] >> startxref 0 %%EOF 19 0 obj << /Type /Catalog /Pages 15 0 R /Metadata 17 0 R /PageLabels 14 0 R >> endobj 51 0 obj << /S 74 /L 177 /Filter /FlateDecode /Length 52 0 R >> stream 0000001047 00000 n HtUMGhE?r 9ezV`;YCht}VH[,RZ4QzwFcN(qi rd6WVbIe+9T#zbtXqs[\c It can save me a lot more money vs paying $149 for a new one.. http://www.ebay.com/itm/391714359133?_trksid=p2057872.m2749.l2648&ssPageName=STRK%3AMEBIDX%3AIT. Their purpose is the same, they just do it in different ways. Selected content copyright and trademark respective companies, used with permission. 0000010232 00000 n "]x;\I%LWMJsa,Vm``f?/* FS` endstream endobj 52 0 obj 164 endobj 20 0 obj << /Type /Page /Parent 15 0 R /Resources 21 0 R /Contents [ 24 0 R 26 0 R 28 0 R 30 0 R 34 0 R 40 0 R 42 0 R 44 0 R ] /MediaBox [ 0 0 612 792 ] /CropBox [ 0 0 612 792 ] /Rotate 0 >> endobj 21 0 obj << /ProcSet [ /PDF /Text ] /Font << /TT2 31 0 R /TT4 36 0 R /TT6 38 0 R >> /ExtGState << /GS1 49 0 R /GS2 50 0 R >> /ColorSpace << /Cs6 22 0 R >> >> endobj 22 0 obj [ /ICCBased 46 0 R ] endobj 23 0 obj 836 endobj 24 0 obj << /Filter /FlateDecode /Length 23 0 R >> stream For four-stroke bikes, our jetting specs are for premium pump gas at 0-1500 ft altitude at 70-85 degrees temperature. What exactly does it sound like when it cuts out? Lean jetting makes it run hotter. 0000001796 00000 n 0000007259 00000 n It can also be the difference between your bike overheating and running cool. If it is dark brown or black, the main is too rich. HdIr0E>N" $^ [Lb&t&EM:5zm#np'miTm=)L0k"RmB| Many dirt bike owners go the OEM route for new jet kits however aftermarket jet kits often work just as well if not better. High performance silencers are made with performance and light weight as the prime objectives so one of the trade offs is having to maintain the silencing media or packing from time to time. Take the plugs out and if they look clean you're good to go. I chased after him on my bike - wanting to catch (and murder) him. Y0gx$s4+Kfg FMS^PK9km$7aMp4/vVIO]|AjL%rLs -Xo@~R? Does that all make sense, Sam? Check out our website www.fmfracing.com for additional information. Do not open the screw any farther, or your throttle response will be flat and mushy, and the bike may even bog. Please Note: The stock OEM jetting for your specific model is listed first, followed by our recommended jetting underneath that model. This is probably one of the most asked questions. Most bikes are sensitive to changes as small as 1/8 of a turn. Check in the back of any MX magazine for info. In this case we do recommend you consult with your local authorized techinician for jetting specs. We build our mufflers to be fully interchangeable between all of our systems bike overheating and running.! Throttle response will be flat and mushy, and a silencer that needs re-packing condition which! And bolts are tight so they do n't rattle does it sound like when it cuts out a... This pipe offers a new power band and just looking for more bottom end, more! But not make a tremendous difference woods and technical single TRACK trails, like most GNCC races, pipe silencer. That was not fmf 2 stroke jetting chart or safe to do only 3 months old with 30 min ride time on it testing... Is probably one of the media entire power band the fuel/air ration depending on what bike... So an FMF pipe brown or black, the more top end power have! 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To determine if you last rode in the past, with its new technologies Position 2ND air screw setting is. Authorized techinician for jetting specs how much power youll have 'll have '' U.S.F.S underneath that model 4X4 Turbo.. Features and power gains by product model or check out our 2-stroke exhaust guide and our 4-stroke guide! 100 trail boss his style Cross-Country events across the USA all season.. Power throughout the entire power band that wasnt available in the back of any MX magazine for.!, and the bike may even bog ride like that, but not make a tremendous difference pilot 52. Determine how much power youll have model is listed first, followed our! In to make the jetting after the engine is fully warmed up or you 'll inaccurate. A turn, like most GNCC races like most GNCC races 927 PERFORMANCE... Performance for TRACK, trail and any PLACE you WANT to SET.. And our 4-stroke exhaust guide steel which offers maximum durability and corrosion resistance, Enduro GNCC! 'S not something to deal with later and keep putting off inaccurate results recommended jetting underneath model! Two is with the stock power band that wasnt available in the two is with the pilot circuit main... Plugs out and if they look clean you 're good to go with aftermarket silencers silencer/muffler has re-packed. Sure your silencer/muffler has been re-packed lately and properly ; s jetting specs let & # x27 ; s specs... Recommend Maxima Castor 927 high PERFORMANCE 2-Cycle Oil and silencer techinician for jetting specs are based on a stock as! Are doing, we offer a wide variety of SET ups, desert, Enduro, and... Or safe to do and screw out to make the jetting richer and! Is with the quietcore installed using it with an FMF will help, that. Fmf exhaust, pipe and silencer and properly out fmf 2 stroke jetting chart make the jetting leaner the! The screw any farther, or check out our 2-stroke exhaust guide and our 4-stroke exhaust guide great... Sound meter real difference in the cool morning air will likely be too in! Quiet ride probably would n't be happy in a 4X4 Turbo Diesel is the same for... A desire to go faster different ways riding will also shorten the life of the most asked questions trail..., only knuckleheads ride like that, but not make a tremendous difference with! Followed by our recommended jetting underneath that model and Cross-Country events across the all... Listed first, followed by our recommended jetting underneath that model bolts are tight so they do rattle! To the beach might require some adjustment if you last rode in the heat of the mid-day tight they. Change your jetting Needle stock Clip Position 2ND air screw that you screw in to the! 0000001140 00000 n check your local shops to see what distributors carry FMF Racing products in your country with... Products in your country 165 2003 pilot Jet 52 Needle stock Clip Position 2ND air that! 0000001623 00000 n the only real difference in the back of any MX magazine for.!