- Sparks exhaust jetting (1 replies)
- removing snorkel (4 replies)
- Information Please (2 replies)
- R-4 jetting & and other ?'s (1 replies)
- valves question (4 replies)
- white brothers R-4 baffle (0 replies)
- Shaved or Unshaved (3 replies)
- Shes almost done!!!!! (0 replies)
- E-series question (15 replies)
- 250R Aluminum Air Box (1 replies)
- Engine Mods? Mx Racing (5 replies)
- striped spark plug hole (23 replies)
- Does This Sound Right???? (4 replies)
- Whie Brothers Question (2 replies)
- suggestions on upkeep for 440 ex (3 replies)
- i dont know what i did?!? but shes alive (8 replies)
- Which Exhaust ???? (1 replies)
- 426EX vs Raptor? (5 replies)
- slip on vs. full (14 replies)
- should i jet (8 replies)
- HMF Quiet core ? (1 replies)
- Broken exhaust stud wont come out (11 replies)
- shavings in oil? (6 replies)
- moving the needle up or down? (5 replies)
- Impossible to find neutral...MAGURA? (4 replies)
- R-4 .... good or bad? (6 replies)
- 400EX Exhaust (7 replies)
- need help jetting! (4 replies)
- need help fast, heli coil (2 replies)
- 440ex Q? (16 replies)
- Crf Cam Chain (16 replies)
- I need help fast want to play this weekend (3 replies)
- Rejetting for Colder weather? (4 replies)
- No power (2 replies)
- Reassembling cilinder (7 replies)
- Best AIR SCOOPS & OIL TANK? (12 replies)
- fresh 416 start prob (16 replies)
- 416? (9 replies)
- wut do yall think about the big gun? (9 replies)
- Questions on 330 kits.... (11 replies)
- Taking 300ex baffle out (4 replies)
- What are the BEST Clutches on the market for a 400EX??? (5 replies)
- carb poping (9 replies)
- Airbox Lid Question on 400 (4 replies)
- 400ex Yoshimura Comp. System (4 replies)
- Back Pressure (18 replies)
- 400ex Turbo Charger (9 replies)
- 416 jetting (18 replies)
- Front Sprocket (9 replies)
- any luck re using a 400ex head gasket (4 replies)
- Bottom end rebuild (1 replies)
- 2003/TRX250EX/backfirescreen (5 replies)
- What do I need to do for jeting my 300ex!! (1 replies)
- bored stock carb (7 replies)
- removing 250x kickstart shaft? (2 replies)
- oh my god im in serious trouble please help (8 replies)
- hotcam valve clearance (6 replies)
- Anyone ever install a stainless line on magura clutch (6 replies)
- which gaskets on my R? (3 replies)
- need more power out of my 400EX.... (7 replies)
- anyone using magnetic drain plugs? (2 replies)
- Four Stroke Tech oil cooler (2 replies)
- Port Work Worth The $ (7 replies)
- Where I can find a C-Sparks X-6 Ceramic Exaust System??? (7 replies)
- Zero Balls Top End? Help (3 replies)
- is a kick start possipossible (5 replies)
- Any Top Speed Gains? (10 replies)
- idle problems when cold and its coughing (3 replies)
- Need some help with jets. (0 replies)
- tips for getting 300ex motor back in frame (13 replies)
- THE RESULTS: My fully built Duncan 440ex vs a stock yfz450 (33 replies)
- Who has cut down their silencer? (25 replies)
- what gearing can a 406 pull?? (3 replies)
- sparks ignition key? who has one?... (5 replies)
- Rotory Engine (6 replies)
- Kawasaki Lakota sport engine problem's please help!!!!.......... (19 replies)
- TC or Hot Cams (5 replies)
- piston clips.. (3 replies)
- does any 1 else have this (2 replies)
- I need a 250ex Pro Circuit endcap NOW!!! (5 replies)
- 250ex owners I got a question (9 replies)
- Blowing fuses (3 replies)
- exhaust system (2 replies)
- Aftermarket parts (6 replies)
- Man I HATE this!!!! (12 replies)
- 300 ex exhaust (9 replies)
- 416 stroker (28 replies)
- LTE exhaust... (5 replies)
- Kill switch (2 replies)
- Blown head gasket (with a twist) (6 replies)
- 350x jetting (2 replies)
- Which Cam? (7 replies)
- bummer?! (6 replies)
- DG Exhaust (9 replies)
- 416 or 426? (1 replies)
- JETTING and it's effect on 440 engine temp... HELP! (9 replies)
- cam timing (1 replies)
- Head stud pulling out of the cylinder (10 replies)
- Yoshimura Header???? (5 replies)
- 416ex Ross or JE and what exhaust? (10 replies)
- 250r leaking coolant (6 replies)
- sparks timing key? (8 replies)
- Is this a good idea? (3 replies)
- Used Hardfaced Rockers? (6 replies)
- i have a problem im new and need help (6 replies)
- 250x is smoking after rebuild--???? (9 replies)
- Why is my 400ex smoking??? (12 replies)
- drop in cam that gives best top end? (2 replies)
- Question about a wierd looking screw (14 replies)
- cam comments / ideas (1 replies)
- compression ratios (2 replies)
- who has a built motor? (6 replies)
- SPEED: 350X vs YFZ450 (22 replies)
- 300ex problems (10 replies)
- rev limiter (30 replies)
- valve (0 replies)
- J.E 11:1 piston (20 replies)
- 250x wont start... (13 replies)
- 250x motor in 300ex (6 replies)
- Cylinder/header? (1 replies)
- ? (3 replies)
- sputtering or bogging (1 replies)
- what gearing on a 440 ex (5 replies)
- will it work? (2 replies)
- how much will it bring? (4 replies)
- Best Gasket?s (6 replies)
- Reverse for 400 ? (8 replies)
- pipe blow out (7 replies)
- Bigger Head Pipe Diameter? (4 replies)
- cylinder problem... (12 replies)
- valve adjument (4 replies)
- what model carb does a 400ex have??? (12 replies)
- pic of 300ex with street bike engine (1 replies)
- 300ex jetting (1 replies)
- The neverending jetting question!! (3 replies)
- CDI and timing key (2 replies)
- So this 250R came in to school today.. (19 replies)
- leaky carb.. (4 replies)
- 250r motor kits (1 replies)
- best parts for the 440 stroker (1 replies)
- what carb? (24 replies)
- CAM's (24 replies)
- Stage 2 hot cams (3 replies)
- 440ex ?'s (8 replies)
- 300EX K&N Jets (0 replies)
- how do u get started cc racin (2 replies)
- Head Pipes??? (4 replies)
- why is 250r the best (16 replies)
- degree key question ????? (5 replies)
- hey you guys with a 39 fcr (4 replies)
- whats next for next year? (5 replies)
- 250r flywheel (4 replies)
- stage 1 hotcam (11 replies)
- intake manifold (9 replies)
- 440 stroker kit (5 replies)
- Hard to idle (3 replies)
- jetting help (4 replies)
- Transmission Final Drive Ratio (2 replies)
- finding TDC with advance key installed? (10 replies)
- How many psi in head pressure? (4 replies)
- new rear tires,should i change a sprocket (3 replies)
- 416 timing Q? (14 replies)
- FMF Power Core IV? or WhiteBrothers R4 (3 replies)
- What 2 do with Airbox Lid? (5 replies)
- 450r ?? comments (10 replies)
- Question about Airbox Lid!!!!!! (6 replies)
- 2001 400ex buildup (4 replies)
- 300ex mods? (1 replies)
- Pro Fab 330 installed (9 replies)
- rev limiter (3 replies)
- What to do with my new exhaust? (15 replies)
- bogging/sputtering (3 replies)
- Air Box Question??????? (7 replies)
- rad taperd bearing carrier installed but QUESTIONS PLEASE ANSWER (15 replies)
- Flywheel Specs? (0 replies)
- degree key for 300ex? (1 replies)
- 400ex clutch lever on 300ex? (1 replies)
- More 500ex problem (12 replies)
- HELP....wiring an XR kill switch on a 300EX (0 replies)
- oil rings (PLEASE HELP) (22 replies)
- quick base gasket question... (3 replies)
- Splitting Cases? (3 replies)
- modify air box or don't modify air box?? (24 replies)
- Motor Decisions (4 replies)
- guess who the idiot is?? (7 replies)
- Hotcam Stage2 Long Term Update (5 replies)
- 400ex and 300ex starter? (1 replies)
- head work.... (20 replies)
- motor question (8 replies)
- 416 with 12.1 compression (9 replies)
- 426 kit (4 replies)
- Se7en racing oil tank? (3 replies)
- help counter balancer 250r? (3 replies)
- Bigger studs/stud fix?? (1 replies)
- duncan PC4000? (6 replies)
- i need help with a yz426 in 400ex frame (2 replies)
- lightening the flywheel...explained! (28 replies)
- carb help (0 replies)
- sprocket help (2 replies)
- Look at this bull (3 replies)
- 440 kit (1 replies)
- Combustion chamber mod (3 replies)
- 416ex gasket and timing chain ?'s (1 replies)
- Clutch instalation question (6 replies)
- 2004 400ex new carb!! (11 replies)
- FCR MX Carbs???? (4 replies)
- compression and gaskets?? (3 replies)
- amount of oil (2 replies)
- how much air do you think the outerwear hods back ? (14 replies)
- 400ex motor question?!? HELP (8 replies)
- This Is Sweet (17 replies)
- Please Help Me!!!!! (2 replies)
- 250R jetting help (7 replies)
- Q's on 440 prices?? Pros and Cons?? (40 replies)
- Is this bad? (12 replies)
- 650ex conversion (11 replies)
- 350x break in (1 replies)
- FCR help (18 replies)
- why the price difference between 4stroke and 2stroke pipes? (4 replies)
- Blue smoke? (4 replies)
- Bigger cylinder studs (1 replies)
- engine trouble (5 replies)
- rear axle end(hub) nut (6 replies)
- MX pipe for 300ex help??? (4 replies)
- Getting new K&N filter!! (35 replies)
- bearing carrier help (2 replies)
- C&d Racing 416 (25 replies)
- heavy duty timing chain (0 replies)
- link to jetting guide?? (4 replies)
- best piston to run in my 250r (9 replies)
- cams (6 replies)
- Black box mod (7 replies)
- Best Exhaust system for 400ex? (8 replies)
- Arias piston (1 replies)
- 300ex motor work (18 replies)
- best 300ex pipe? (13 replies)
- port job (1 replies)
- 250r engine in 400ex chasis (3 replies)
- how to take of reverse rev limiter (3 replies)
- looking for: outerwears air box filter?? (3 replies)
- replacing water pump seal need help!!!!!!!!! (0 replies)
- Front Sprocket question (4 replies)
- head gasket replacement (6 replies)
- fcr (10 replies)
- Shaved flywheel (3 replies)
- Silencer (8 replies)
- Electrical problem, a real stumper (5 replies)
- air filters (21 replies)
- procircuit t-4 (5 replies)
- 15w-50 in the winter? (1 replies)