400ex carb size k&n filter and air box has many holes drilled in the top. com FREE DELIVERY possible on eligible purchases May 30, 2013 · A buddy is working on my 2001 400ex, which is completely stock besides a UNI air filter. Sep 6, 2021 · Buy 400EX Carburetor ATV Carb Compatible for 1999-2015 Honda Sportrax/FourTrax TRX400, 1999-2008 Honda Sportrax 400 TRX400EX 2x4 2009-2014 Honda TRX400X Replaces OE#:16100-HN1-A43 16100-HN1-013: Carburetors - Amazon. Being cheap or taking the easy way out only makes matters worse later. This jetting information is from JetsRus. Change or remove machine. Rear Tire Model: Ohtsu M/R 501. 5--------- 92-----------86. I know 2005 and 2004 was a 40mm FCR. This is the full race version of the YZ426 stock Dec 28, 2020 · Buy 400EX Carburetor，Compatible with Honda Sportrax TRX400EX 2x4 1999-2008 ATV, TRX400X 2x4 2009-2015 TRX 400 Carburetor 400EX Replaces 16100-HN1-A43: Carburetors - Amazon. Apr 20, 2010 · It depends on the year, the older 400EX carb has an adjustable jet needle. 2008 - 2014 TRX 400X Oct 27, 2012 · What size (dia) is the 400ex carb? Do people replace the 300ex boot with the 400 boot when they upsize the carb? I know the 400 boot has a different (3) vs (2) bolt configuration and an oval vs round port it looks like. Sep 7, 2010 · I have installed three different types on 400ex's. You make the changes, one at a time, find out what the effect is and then adjust for it. now it spits a little when cold . Choke lever style. . 5--------- 96 Jul 29, 2013 · I have an 05 400ex, I need to jet the carb. HIDE STOCK SIZES. Mar 26, 2011 · I was wondering what jetting people are running on there 350x's with the 400ex carb? I just got mine in the mail for my 350x build and I def know the main jet that is in it right now is way big! I wanna say if i read it right was a 185 lol The pilot jet is a 38 in it. Is it worth trying to put a 400ex boot in the mill and cutting some holes. Jun 12, 2018 · About this item . Jan 14, 2016 · Do yourself a favor and ditch the 300 carb and exchange for a 400ex carb. Oct 17, 2012 · Do i need to rejet my carb and if so what size jets would be best. Jul 16, 2010 · Generally you would go down one main jet size for every 1750 to 2000 feet of elevation you go up (info for Mikuni carbs). Uses stock valve springs and rockers. 35 Stroke (millimeters/inches) 70 / 2. My '05-'09 manual says it's nonadjustable. Rear Rim Size: 9in. 24 Part #: 174548 Mfg Part #: 03-044. 99 Get it as soon as Wednesday, Apr 9 Apr 12, 2005 · I'm looking for the size/type of CRF carbs by model year. Nov 1, 2001 · The 400EX starts easier and it pulls through the complete RPM range. ported and polished,stage 2 hot cam,a little carb work Sep 29, 2015 · I have an 03 400ex with a 440 kit, hotcams stage 2, k&n with no air box lid, slip on, a new 05 carb rejetted to a 180 dynojet main, dynojet needle on 3rd clip, and pilot screw at 3 turns. The Honda 400ex carburetor diagram is an essential tool for understanding the inner workings of this important component in your ATV. 0 out of 5 stars 89 2008 Honda TRX™ 400EX Specifications Engine: Engine configuration Single-Cylinder How many cylinders 1 Types of power cycles Four-stroke Type of cooling system Air Valves 4 Valves Per Cylinder 4 Valve types and configurations Single Overhead Camshaft Bore (millimeters/inches) 85 / 3. So it tunes easy, and is easy to work with. well it was stock. 2 Jul 15, 2009 · FCR 39mm Carb (jetted up), FMF PowerBomb Header, HMF Ballance Muffler, CR8E Plug, DRZ Base Gasket, 12. i rebuilt the motor and left the jets in the carb. Feb 13, 2021 · Best carb for a simple big bore kit is the stock OEM carb with minor jetting changes to compliment the modifications to the exhaust and intake. Jump to Latest 13K views 6 replies 7 participants Watch the carb dismantling segment of our Honda TRX 400EX carburetor cleaning and rebuild video below. I checked the write up and specs. 060 over,uni filter Stage 1 Cam. That is a PERFECT carb for our engine. 5 in) Main Jet #148: Pilot Jet/Slow Jet #38: Pilot Screw Adjustment: 1 Turn out: Float Level: 15. 533 (15/38) Gear ratio 2. Jul 18, 2010 · The only adjustment screws that you have on the carb are the pilot screw(air/fuel mixture) and the idle speed screw. Equipped with accelerator pump for rapid acceleration without flat spots. the stock jetting is 148 main and 38 pilot. 826 (23/65) Final reduction 2. com and jets are available to size the 400 carb close to the stock 300. But i dont know where to start with the jetting. Mar 2, 2008 · anyone by chance know the size of the fuel line on a 2002 400ex or suggestion what size i should use with a 39mm carb The #1 Community For Yamaha Blaster Owners! Search Feb 12, 2009 · ok i have an o7 400ex that i bought as a repo for 2800 in nice shape. Jan 19, 2017 · I have a 05 400ex. 2004 400ex maxxis razr tires DG nerf bars pro taper bars FMF powercore 4 42 pilot jet Feb 26, 2011 · 1995 Honda 300, 355bbk, 40b Webcam, Springs & Hardened Rockers, 300ex Carb, Ricks CDI, FMF Full Exhaust, EBC DRC Clutch Kit, Outlaw Clutch Springs, Twin Air Filter, HL Disc Brake Conversion, Wide Open 424 kit, HL 2" lift, Bronco Shocks, 26" Zillas, Terra 35 Super Winch, Heat Demon Hand/Thumb Warmers, Powermadd Hand Guards, 22” Curved Light Bar, 5” LED pods, VIP-Air Windscreen/Fairing Carburetor Size (mm) 38 Carburetion Type. Jan 28, 2020 · The stock Z carb is a 36mm bore. Aftermarket Product with Premium Quality. Ignition: CD with electronic advance Ground Clearance : 4. You can also adjust the height of the jet needle by moving the clip on the needle, up or down. Rear Tire Size: 20x10x9. 2007 Honda TRX400EX (TRX400EX) - Carburetor All Diagrams Body & Fenders Control & Brake Electrical Engine & Exhaust Frame & Footrest Fuel & Air Suspension Tools & Manuals Transmission Wheels, Tires, Final Drive Sep 19, 2012 · Ok so i just had the valve seals go outta my 400ex, so i toree it down and had to go big bore ect, any wasy i want to know what my jetting should be on a 400ex carb my quad has this done to it 426 10:1 wiseco piston Stage 2 hot cam Fmf porecore k&n high flow with precharger Also runningthe stock header but i have ground the welds out of it, Nov 27, 2009 · -2006 450R. He also has a K&N filter on it from a 400ex. (stock) Will 400ex a-arms work? yes, you will need a Jul 12, 2012 · 92 honda 250x 99 honda 400ex 400ex upgrades 440 big bore kit 11:1 compression piston stage 3 hot cam 04 450r carb P&P head LRD full system pipe EHS racing outerwear filter for air box Mar 1, 2011 · For the 400ex carb to fit to the 350x, I used a 300ex intake boot, and it bolts up real slick just like the 350x boot. I ordered the next size up, a 45, and a few others and a few larger main jets. Mar 2, 2020 · The 400 carb is probably ok, but should be jetted closer to the 300 stock sizes not a stock 400. 76 Engine displacement (cubic centimeters/cubic inches) 397 / 24. Displacement: 397cc (24. the store i go to for parts only had a 158 main jet, i figured if i pulled the air box lid off it wouldnt run to rich. 0 out of 5 stars 89 1 offer from $4199 $ 41 99 Jan 8, 2021 · Honda 400ex In-Depth Guide The Honda 400EX is a 375lb all-terrain vehicle(ATV) manufactured by Honda Motors Company from 1999 until 2009. 2007 Honda TRX™ 400EX Specifications Engine: Engine configuration Single-Cylinder How many cylinders 1 Types of power cycles Four-stroke Type of cooling system Air Valves 4 Valves Per Cylinder 4 Valve types and configurations Single Overhead Camshaft Bore (millimeters/inches) 85 / 3. $64. Mar 16, 2019 · 2006 400EX jetting/carb rebuild Jump to Latest 9. Jump to Latest What size is the 400 EX carb? Hanford,ca 03 Z435 AC pro-pegs AC front Bumper skat trak Hauler 8, 20-10-10. Front Tire Model: Ohtsu M/R 101. I just redid the motor in my 400ex, installing an 87mm Wiseco 11:1 comp Piston and a stage 2 cam. 1x Carburetor. Mar 17, 2013 · I have a 02 300EX, with a 400EX carb, and full FMF exhaust, and I'm looking at having to go up to a 175 or 180, maybe even higher. To adjust it, it works like a normal right hand thread screwrighty tightylefty loosy. 88 Part #: 174558 Mfg Part #: 03-054. 2K views 8 replies 2 participants last post by slipjohn1 Mar 30, 2019 Enjoy our everyday low prices on 2005 Honda TRX400EX OEM ATV parts. I decided while it was off and apart to give it good cleaning because sometimes the float will stick and gas will run out. Cleaning the Carburetor & New Jets. If you normally run a 160 main jet at sea level you would drop down to a 140 at 4000 feet. I know everyone's quad is different but would love to get as close as possible on the first try. Tusk Carburetor Rebuild Kit $17. Stock pilot jet is 38, don't know about them measurements your talkin about. Feb 2, 2014 · Honda ATV Technical Discussions. Front Tire Size: 22x7R-10; Rear Tire Size: 20x10R-9; Front Wheel Size: 10 x 5; Carburetor Repair Kit - 03-054 Shindy. Oct 11, 2005 · I just got another 350x with a 400ex carb on it. 0360---- 95----------- 94-----------88. Home FAQs/ tuning TYPICAL JET SIZE: Main Jet - 148* Slow Jet - 38* Dec 27, 2009 · The stock carb with a 170 jet will work on our screaming 425 but does not flow enough at high RPM. 490 12. Buy with MotoSport and save up to 40% and get free shipping on orders over $79! May 10, 2005 · Has anyone put a 400ex carb on the 350x? I just put it on and it fits there nicely, and changed the sound ALOT. 400EX Carburetor，Compatible with Honda Sportrax TRX400EX 2x4 1999-2008 ATV, TRX400X 2x4 2009-2015 TRX 400 Carburetor 400EX Replaces 16100-HN1-A43 4. Has the same "Bulletproof" 397 RFVC engine, but I notice the carb is a "38mm piston-valve with acceler Carburetor Size (mm) 38 Carburetion Type. $569. the only reason i got this is because the 400ex fuel line is smaller, it will work but i hear its near impossible to get on. Altitude is not a critical consideration unless above 6000 feet, then the jet sizes need to be decreased to compensate for the 'thin air'. The airbox has 3 1-inch holes drilled into it already. when I first got it I was told it was a 440 and it ran like crap. 99 You save 14% . I just looked in my '99-'02 manual and it says the standard clip position is 3rd groove from the top. I am a novice tuner, so I'm asking for a baseline to get started on jetting the carb I bought for my 350X project. May 15, 2013 · The Pilot screw is on the bottom of the carb body in front of the bowl on the engine side of the carb (front). 2) Any year YFZ450 stock 39mm carb with 450r throttle cable and stock 400ex thumb throttle. Fuel Type: Regular Gasoline. If you got the money go with a carb off of the 250Fourstroke MX dirbike. now i am trying to get the carb strait. *Does not use auto-decompression mechanism. 400EX carb the rest is a secret!! I doubt you will find any dynojets in stock anywhere but you can get May 8, 2011 · 400ex carb on a 300ex-Jetting question. 2 Buy OEM Parts for Honda ATV 2005 CARBURETOR Diagram My Garage Honda TRX400EX A - SPORTRAX 400EX CARBURETOR Diagram. Since the QwikSilver carb is less affected by altitude changes, it means no more jet changes next time we head to the mountains. Designed specifically for Hot Rods big bore stroker kit. Mar 15, 2011 · Width------Keihin # -- DynoJets # -- Mikuni # 0. 5:1, ported, 43mm carb, web cam, dasa, buncha other goodies-2005 400EX 04/05 450R carb, stage 2 hotcam, HMF-Do it right the first time, and you wont have a problem later. Feb 17, 2009 · The 400ex is a good new replacement for the 350x carb, They work good, and all the adjusments are new. 6 in) Engine Idle: 1400 RPM: Air Filter Type: Oiled urethane foam: Fuel Tank Capacity: 10 L (2. Engine Type: Single Cylinder 4 Stroke. 1999 - 2007 TRX 400EX. Emailed jetsrus the slow jet in their carburetor rebuild kit is a 42. I had to modify the throttle cable housing on the fcr to accept the 400ex cable, took about 10 minutes with a dremel, very easy. The old Honda carb was not too reliable and jetting it was always a pain. Aug 26, 2014 · If I remember I bought a 400ex intake boot, 400ex thumber and cable, and about 3" of giant fuel hose from NAPA for the head to carb boot. 7 in) Engine Idle: 1400 RPM: Air Filter Type: Oiled urethane foam Mar 2, 2010 · Edelbrock Carb Yep, I had one installed a couple of years back on my 1999 Honda 400EX which has had the top end replaced with a new Zero Run-Time 2006 block/jug. 190 douglas Apr 22, 2014 · Took the carburetor apart no markings on the slow jet. I probably spent $50 on all that. 275 kgf/cm2) Front Rim Size: 10in. 5 in) Clutch system Multi-plate, wet Clutch operation system Cable operating Transmission Constant mesh, 5-speeds Primary reduction 2. Has FMF Powerbomb header White Brothers E Series slip on. i got it to run way better. 2 . 473 (19/28 Dec 27, 2007 · Honda TRX 400EX & 400X ATV Info; carb size; If this is your first visit, be sure to check out the FAQ by clicking the link above. Displaying parts for your 2001 HONDA TRX 400EX. The XR's only Mikuni is a tight fit. 5 mm carb. Tire Pressure: 4psi (27 kPa, 0. The 400EX also sports a sturdy steel frame with removable sub-frame and exceptionally rigid cast aluminum swing-arms. . 5:1 Compression, HotCams, DRZe Valve Springs, Stealth Racing Fuel Screw, 400Ex AirBoot, DID Cam Chain, DynaTek Programmable CDI, Clamp-on K&N with Outerwears, K&N PowerLid Jul 21, 2012 · Thanks, the carb was shipped today and its estimated to be here in 3 days or so. Thanks . i think it might need a uni or k&n filter Shop online for OEM Carburetor parts that fit your 2007 Honda TRX400EXA TRX400EX, search all our OEM Parts or call at 269-385-1540 TRX400EX Pipe Kit – The CT Racing Sonic TRX 400EX exhaust system includes a stainless header, muffler with 12 discs, and jet kit including our titanium needle. The jet will have the size stamped on it. TRX 400EX Stage 3: single-cam motor. remove airbox lid, replaced with uni air filter, put new hmf Aug 23, 2011 · Stock 400ex carb: Pilot:42 Main:165 Needle:stock A/F:2. 40 over but stock compression. It rides great, up and down hills. a plug chop is the best method to determine the actual jetting needed. Engine. I know its definitely running rich, the plug has lots of carbon on it. 99 MSRP: $20. 6 in. K&N Filter With outerwear Find many great new & used options and get the best deals for OEM Honda Trx400ex 400 EX Keihin Carburetor Pilot Slow Jet 42 *see Fitment at the best online prices at eBay! Free shipping for many products! Feb 6, 2022 · Jetting is as individual as the set-up. Dec 24, 2018 · I recently purchased an 07 400ex with an kcm slip on pipe and a kn air filter with a drilled air box lid can anyone guide me to the correct size jets for the carb Jun 21, 2014 · Never have worked with a carburetor in my life. Screw it all the way in until you feel in lightly bottom out and then unscrew it back out 2 1/2 to 3 turns out. 0370---- 97. Page 9 GENERAL INFORMATION GENERAL ITEM SPECIFICATIONS CARBURETOR Carburetor type Piston valve Throttle bore 38 mm (1. 5 mm (0. Here is a diagram of the 400EX carb. 5mm, then changed to a 38mm with an accelerator pump in 2004. Oct 23, 2015 · These carbs go for over 500 new and half to 350 used. 95: Exhaust Turn Down End Cap – Turn down tip includes 6 stainless steel bolts. The carb is jetted for the flow characteristics of the carb, the fuel being used and the restrictions of the intake filtration system, not the size of the engine. I was wondering if anyone has a done this and could give me a jet size to start with. Was wondering if someone could explain the whole jetting thing to me. , head-pipe and maybe bored to 480 Regular maintenance of the carburetor extends the lifespan of the engine. More top-end power. 99 $ 36 . $21. Then just jetted to match. May 9, 2024 · The OEM carb is the best choice unless you want to spend hours fabricating and customizing to fit a Keihin FCR carb. Any advice would be greatly appreciated. 5. But the TRX 400EX guys like the larger (What size I do not know) TRX 450R carb on there quads. Changing an exhaust system mainly affects the top end and jetting up 2 sizes usually compensates for lean running when at full throttle. I believe its a stock motor with the full yoshi pipe with the header and a uni air filter. 2005 Honda TRX™ 400EX Specifications Engine: Engine configuration Single-Cylinder How many cylinders 1 Types of power cycles Four-stroke Type of cooling system Air Valves 4 Valves Per Cylinder 4 Valve types and configurations Single Overhead Camshaft Bore (millimeters/inches) 85 / 3. Stock starter sufficient. Mar 9, 2006 · correct on the size, but neither carb is a flatslide, both carbs are round-slide carbs. Displaying parts for your 2000 HONDA TRX 400EX. Replaces part number:16100-HN1-003, 16100-HN1-013 ; Fitment:for Honda Honda Sportrax 400 TRX400 1999 -2008 ,for Honda TRX400X 2009-2015 Front Tire Size: 22x7x10. Going to add 04 TRX450R carb with pilot:48 main:175 needle:3rd from the top A/F:2. Seemed a bit rich/boggy at a 185 main jet. Performance Modifications Jul 18, 2012 · 99 honda 400ex 400ex upgrades 440 big bore kit 11:1 compression piston stage 3 hot cam 04 450r carb P&P head LRD full system pipe EHS racing outerwear filter for air box Kn air filter 4" spal fan nerf bars ac front bumper tech 4 tires itp rims all the way around Jan 25, 2019 · 400EX Carburetor，Compatible with Honda Sportrax TRX400EX 2x4 1999-2008 ATV, TRX400X 2x4 2009-2015 TRX 400 Carburetor 400EX Replaces 16100-HN1-A43 4. Can I just lean out the mixture instead of rejetting? Does anyone know the stock jet size for a 400ex? Oct 9, 2016 · TRX 400EX Stage 2: single-cam motor. If you would like me to see if the OEM carb can be made to perform properly (and it did on my 05 400EX flat track race quad) - send it to me and let me see what can be done to improve it and/or how bad you and the 'technician' screwed it up. It was easier for me to fit the 350x airbox to carb boot than the 40ex carb to the 350x intake boot. 2ci) Bore x Stroke: 85 x 70mm (3. Product Details: Size: Inner Diameter (intake side): 39mm Outer Diameter (intake side): 43mm Inner Diameter (air filter side): 54mm Outer Diameter (air filter side): 58mm Package Include : 1x Carburetor, 1x Fuel Filter & Other Accessories Required For Assembly(You will receive what you see in the pictures) Compatible With Honda : 2001-2015 Honda Sportrax TRX400 1999-2008 Honda Sportrax 400 Apr 3, 2012 · Key: For 400EX 99-04 Pilot jet-slow jet air/fuel screw-pilot screw Oct 29, 2009 · ok so i have a bone stock 400ex. Replaces OEM # 16100-HN1-A43 Carburetor fits: Honda models. Jan 28, 2023 · The pilot screw is for idle only - to set it properly (regardless of the size of the pilot jet) with the engine at normal operating temperature (ride for 10 to 15 minutes before making the adjustment) - connect an accurate tachometer - with the engine idling at the desired idle speed, turn the screw in by 1/8 turn increments pausing about 5 seconds between adjustments - when the engine rpm Drive Chain (Size/Links) 520/94: Carburetor; Brand: Keihin: Identification Mark: QB11A: Type: Piston valve: Throttle Bore: 38 mm (1. com FREE DELIVERY possible on eligible purchases Jul 28, 2007 · If I remember right the EX carb is a 35. HONDA TRX400EX 400EX TRX400X carburetor jet kits and jets, main, pilot, slow and air jets . 5 (bought carb used with these jets). Here are the details on the build: NOS Crate Motor (no mods; never fired) K&N Air Filter (stock air box) Stock Header w/Supertrapp Silencer and Mid-pipe 87 Octane Pump Gas Riding Elevation: 4,300' Dry Climate Carb: 2001 OEM Honda 400EX Carburetor Size (mm) 38 Having a Honda sportrax 400ex is the best sport ATV you can own. it does though, and theres major popping on decel. 35 x 2. Triple disc brakes provide much needed stopping power and an Apr 30, 2019 · Boring an engine does not affect the jetting. Again the EX carb body is way to big to fit in between the XR Frame and the rear shock. 1 0. Carburetor my 2006 trx 400ex is solid! it does every job perfectly! its great on the track, even better in the woods! and although its a two wheele Feb 4, 2011 · This project is coming in for a landing. Understanding the carburetor gives a greater sense of control over the vehicle. Everything I’m seeing says the early stock 400ex had a 35. 37MM or 38 FCR carb is the grand daddy of carbs for the 350x. (qb11a A) 16100-HN1-A42 The salesman said it would work, but I searched and it says this will only fit the 2005 and up. Sparks racing will bore the stock 35. Mar 27, 2011 · 1991 TRX 250X 12:1 Wiseco . Carburetor My 07 400ex has been rebuilt 6 times and has had many other pieces replaced. when its worm it is Feb 3, 2014 · Carburetor Assembly Carb for Honda Sportrax 400 TRX400EX 2x4 1999-2008 ATV, TRX400X 2x4 2009-2015 TRX 400 Replaces 16100-HN1-A43 $36. With your mods if you added the 400ex carb you'd be jetting with starting jet of at least 150 a slow of 42, 2 3/4 turns from lightly seated and the needle clip in the middle. $28. 400ex is a 38mm and the 450r is a 42mm. Catalog; Honda; ATV; 2005; May 31, 2013 · Has anyone run the 2005+ Carb on their pre-2005 400EX? I need to get a new carb for my 2001 400ex which is stock except a Uni air filter. It has a 28 horsepower engine and the Honda 400EX has a top speed of 72 MPH. CLICK HERE to see how we did in the Dirt Wheels Magazine TRX400EX pipe shootout. 9 mm (0. If your engine is running lean or rich at full throttle, it is lkely due to the main jet getting clogged or the jet size not being able to keep up with your mods, or the jet could be too big if you’re driving in a high altitude region (with less air available). Honda TRX 400EX Carburetor Cleaning NOTE: The carburetor rebuild kit includes all the jets and needles needed to overhaul a TRX 400 carb, as well as all the O-rings, gaskets and washers. What about the other years? Also, which of the years is considered the best overall performance/throttle response on the bike (including carb size and stock jetting specs)? Thanks. Apr 14, 2005 · stock carb is a 35. More top-end power than Stage 1 with midrange gain. Should I cancel this order/are there differences?? Dec 7, 2013 · Hey guys im buying a full hmf exhaust system and 440 big bore kit for my 400ex and a K&N Air filter, what would be the proper jetting for it when i live in Florida. The previous owner said that i should jet it down 10 numbers on the main jet. Here is my details Im in Illinois 600' Elevation All motor internals are rebuilt to stock. 3 0. I ordered this: Honda TRX400EX OEM Carburetor Assy. 1) 04 or 05 TRX450R stock carb 42mm, best to use a 450r throttle cable and stock 400ex thumb throttle. the top end was just built last week. Apr 12, 2005 · << Ontario farmer >> 04 TRX 450r - Yoshimura RS-3 Slip-On - Quad Works kit - removed: airbox lid, fenders, heel guards - Holeshot XCR rapped around ITP C-Series - Custom full aluminum tubing grab bar - Powermadd hand gards - Going to add when i feel like: HRC kit - Want for next winter: Port&polish(boone), 13:1 comp. 5 (runs well but bogs at the top of RPMs). Dec 29, 2007 · I was on Honda's site browsing around and saw their link to the new 2008 models and was surprised to see the 400ex listed. 937 (16/31) 1. 916 (12/35) 1. An Overview of the Honda 400ex Carburetor Diagram. 95 Dec 23, 2017 · Ok, so I've got a 2000 400ex and it runs pretty well, the only thing is that on decel it has a lean pop. Front Tire Size: 22x7R-10; Rear Tire Size: 20x10R-9; Front Wheel Size: 10 x 5; Carburetor Repair Kit - 03-044 Shindy. 76in) Aug 24, 2010 · stock carb 32mm keihin with accelerator pump. 5 in) Main Jet #148: Pilot Jet/Slow Jet #38: Jet Needle Clip Position: 3rd Groove: Pilot Screw Adjustment: 2 1/4 Turns out: Float Level: 18. TRX400EX Keihin FCR Carburetor Kit Features of the FCR Carburetor: Smooth bore for maximum air flow. I had to get a new carb for it and I bought this: Honda TRX400EX OEM Carburetor Assy. I have heard that it is important to re-jet the carb to allow more fuel to be injected into the cylinder. 0350---- 92. 5mm to about 37mm which helps with a mild motor package like a 416. I'm not there to listen to it or ride it, but what you describe sounds like it might be jetted too rich on the main jet. To get the full potential from our full out 425 we went to the Keihn FCR 39mm full race carb. Rollers on throttle valves and progressive linkage for smooth operation and control. Seems to have new plastics and ergos. 2 May 24, 2004 · 400ex Carb On A Z400. Flat slide with vacuum release plate for best throttle response and flow control. From what I have read it has a lot more throttle response than the stock EX carb. Moose may be able to give you some advice on the jetting as he has a 400EX carb on his 250X. Jun 10, 2013 · -2006 450R. I was in the carb and it has a 142 pilot and Carburetor Carb Fits 1999-2006 Honda TRX400EX / 2007-2014 TRX400X BRAND NEW. it makes a huge difference, throttle response is great adn power is increased across the board. i put 440 jets in the carb. it was bone stock when i got it so here's what i did and i was hoping to get some feedback on the needle and any other carb adjustments you guys feel are neccessary. Drive Chain (Size/Links) 520/94: Carburetor; Brand: Keihin: Identification Mark: QB10A: Type: Piston valve: Throttle Bore: 38 mm (1. Might want to do the plug chop trick like TRX has suggested to me for finding the perfect main jet size. all i have on it is a white brothers e-series exhaust. 6 US gal; 2. I also ordered the specific 450r fuel line because the line goes from about a 1/4 of an inch and enlarges to about 3/8s of an inch. 118 is too small of a main for your build even for a dynojet. pwwirkcvzyptweqwqhbekieckdlphwkjupsgwpkvajwdqypntrssnwgoeyeernnppxrozdxfmzwhutzcdjbvs