- Jetted today but confused?? (4 replies)
- 416 runs lean... Why? (20 replies)
- New Clutch Slipping HELP!!!! (13 replies)
- Possible head problems (2 replies)
- snapped the front sprocket bolt (12 replies)
- 460ex?? (13 replies)
- 200 main??? (4 replies)
- Why? (2 replies)
- anyone compare fcr 41 vs 39? (6 replies)
- Low Budget Engine Upgade (11 replies)
- Hyd clutch/ x-6pipe (2 replies)
- xrs only (4 replies)
- no spark (6 replies)
- 440 (0 replies)
- any aftermarket airbox's for the 300 (1 replies)
- Sparks X-6?? (6 replies)
- Shee motor in EX or R frame (10 replies)
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- Um Racing (4 replies)
- cams (1 replies)
- help, preferance? (1 replies)
- hmf pipe (10 replies)
- 300ex carb trouble (0 replies)
- 250x stuff (1 replies)
- 416,426,440 hp #'s (7 replies)
- k & n filter ???? (8 replies)
- 350RX........should i do it? (23 replies)
- new 450R (10 replies)
- Blown Head Gasket (1 replies)
- what pipe for a 440 with a ported head (3 replies)
- Some Cam suggestions (9 replies)
- 440 stoker kit good choice? (17 replies)
- Does anyone know what stock jetting is on trx300 Rancher? (7 replies)
- Who has the best price on a stroer crank w/ HD rod?? (4 replies)
- Exhaust system for YZF426/EX? (3 replies)
- DB rating? (6 replies)
- HRC Cam Evaluation (27 replies)
- best carburetor (15 replies)
- the broke 300...again (3 replies)
- hp gains from port/polish (2 replies)
- 11:1 piston for 250x? (1 replies)
- good cam for 300? (5 replies)
- popping in front of wolverine in reverse need help (0 replies)
- AVGAS is good... (37 replies)
- 440 or ???? (7 replies)
- which pipe is this? (8 replies)
- whats the best carb to get (1 replies)
- Installing a tether cord (4 replies)
- How fas will a 300EX go with a 300 bore kit? (12 replies)
- A good mod (14 replies)
- R-4 jetting = Lots of power (2 replies)
- wut bore is the best 4 a 400ex? (1 replies)
- size 41 1/2 pilot jet???? (0 replies)
- 300ex problem (12 replies)
- More Power For Fourstroke (7 replies)
- 400EX Carb on 250X? (2 replies)
- '87 250X Reverse Problem (7 replies)
- what jet kit and what jet (2 replies)
- Rev limiter (2 replies)
- Problems with the Timing Chain (13 replies)
- motor mod ??? (4 replies)
- 450r radiator on R???? (0 replies)
- 440 cc's and a JE piston...Where do I go from here? (0 replies)
- gearing my 400ex (3 replies)
- all 300ex riders (4 replies)
- OIl cooling for 300ex?? (14 replies)
- My Mobile Dyno (1 replies)
- ut ohhh (1 replies)
- Z400/KFX engine swap (1 replies)
- 250r low end port??? (8 replies)
- 400 making ticking noises (10 replies)
- dynojet size conversion (9 replies)
- Which exhaust should I buy? (4 replies)
- headpipe glowing red (8 replies)
- engine gurus please read (10 replies)
- Wires!!!! (2 replies)
- What can I do to a 250EX to make it at least do 60MPH? (32 replies)
- All 330ex riders please read (13 replies)
- black box mods... (2 replies)
- 460 reliablity (22 replies)
- Get an Oil Cooler? HELP!!! (2 replies)
- Spark Areester/IDLE (1 replies)
- need technical help!!!!!!!! (4 replies)
- 250r stock jets (1 replies)
- 450R carb (4 replies)
- Runin cooler = power (13 replies)
- 440 11:1 or 12.5:1 (3 replies)
- Question Exaust and what jet I need, and aabout a Cam?? (3 replies)
- hp gains (11 replies)
- what is laegers website (1 replies)
- Air Cut Off Valve??? (1 replies)
- Has this ever happened to other 300ex owners? (17 replies)
- 400ex cam (9 replies)
- Kick Start on a 400ex? (26 replies)
- 440 sleeve scored, options? (21 replies)
- Best Header and Silencer for Drag 400 ex (3 replies)
- Cheap Performance Mods (6 replies)
- Exhaust. Which is my best bet? (2 replies)
- 250x motor questions (2 replies)
- pc stock exhaust? Pappy? (9 replies)
- Any one got any specs of slip-on pipe decible ratings? (3 replies)
- 400EX won't shift (4 replies)
- 426,stage2 cam.any heat related problems?? (2 replies)
- Connecting Rod Troubles... (1 replies)
- supertrapp ids-2 exhaust (3 replies)
- What kind of power would this quad have . . (15 replies)
- thumper racing 440ex (2 replies)
- New 400ex too Much Oil? (9 replies)
- smoking (4 replies)
- FCR 416ex jetting (3 replies)
- CDI rev limit (11 replies)
- rev box (3 replies)
- Valve clearance (1 replies)
- i need opinions PLEASE (6 replies)
- wiseco piston (11 replies)
- New Cam/What Oil???? (7 replies)
- RPM's (tachometer) (4 replies)
- 250R motor in a 250X frame- Pics! (16 replies)
- dyno tuning (5 replies)
- hp on worked 250r? (3 replies)
- How to replace my 300ex throttle cable? (1 replies)
- Dg exhaust/jet (6 replies)
- everyone with motor mods look here!! (8 replies)
- bad vibration and noise from my 440 (4 replies)
- Best clutch set up for the 400? (6 replies)
- anybody run the 400ex carb on their 300ex? (19 replies)
- CDI upgrades (2 replies)
- fat boy 4 (5 replies)
- big gun race for 250ex (1 replies)
- 416/16 Tooth (16 replies)
- Banshee motor in lt250r frame? (1 replies)
- jet hot coatings??????? (4 replies)
- exhaust question (5 replies)
- 2-stroke oil (7 replies)
- Pro Fab Atv (1 replies)
- tight clutch (8 replies)
- engine mods for a 300ex with out the big bore (7 replies)
- slipping clutch (1 replies)
- bill ballance series hmf pipe (3 replies)
- Oil Tank pressure (7 replies)
- Slip on and Header pipe (2 replies)
- how high of octane will i need? (17 replies)
- kill switch (4 replies)
- help with new motor asap (5 replies)
- smoking .....????? (7 replies)
- Buddies 400 broke.... (9 replies)
- installing a sparks 8 plate clutch (6 replies)
- duncan fatboy exhaust? (9 replies)
- Anti-Sieze? (5 replies)
- 300ex pro design kill switch help (5 replies)
- c-dale motor on a 400ex (17 replies)
- HMF slipon jetting for 400ex? (16 replies)
- Got the CRF today. (39 replies)
- Hi-comp Piston (5 replies)
- fcr carb jets (1 replies)
- 300ex high comp piston question (3 replies)
- Best Steel Sprockets for the Price (18 replies)
- 250r rad. cap pressure rating (1 replies)
- Big Gun quiet core (2 replies)
- Smokin! (5 replies)
- aftermarket clutch kit install? (3 replies)
- Slip on To Full System? (5 replies)
- valve clearance (3 replies)
- Pictures of HMF pipes (23 replies)
- 250x kickstart on 300ex? (5 replies)
- perfprmance (8 replies)
- 400ex clutch pin (0 replies)
- 250r radiator cap poundage? (0 replies)
- Pilot ???? (10 replies)
- Black plug (1 replies)
- trx 250x wiring/lights (2 replies)
- Wiseco 440 Big Bore Help (0 replies)
- Need to go Faster...What kit to buy? (2 replies)
- choke or not (4 replies)
- oil cooler (2 replies)
- Won't start (4 replies)
- what pipe to get? (5 replies)
- cool head?....stock head? (1 replies)
- For those of you with built 250x/300ex engines (6 replies)
- hinson quick change clutch cover? (8 replies)
- my clutch cable broke is it bad to ride with out??? (29 replies)
- Race Gas (9 replies)
- 400ex clutch? (1 replies)
- For those BUILDING motors (5 replies)
- fmf headers (2 replies)
- Need jetting help (6 replies)
- R problem.........please help (5 replies)
- XR400 Mod's (0 replies)
- NGK Spark plug info (0 replies)
- Exhausts exhausts.. too many. (15 replies)
- ticking (7 replies)
- good place to buy pistons (1 replies)
- xr 50 oil? (0 replies)
- What are good lt250r mods (2 replies)
- Adding links to the stock chain? (4 replies)
- stripped stud (2 replies)
- adding a spark arrestor to a X-6 (1 replies)
- 440 vs. 250r? (38 replies)
- filter (12 replies)
- good chain to buy (19 replies)
- cdi failure in cold weather (0 replies)
- 22cc cool head on stock 250r cylinder?? (1 replies)
- EX Header Question?? (4 replies)
- Best Oil (8 replies)
- what size jet? (2 replies)
- jets... (3 replies)
- DJ main jet adapter (6 replies)
- 13.5:1 compression anyone else (21 replies)
- 400EX cooling fan? (3 replies)
- 250r head studs (1 replies)
- seems flat (14 replies)
- how much $ ...for porting n polishing 250r ? (1 replies)
- 250r exhaust flange (6 replies)
- rear axle bearings? (8 replies)
- 00 400ex slip on jetting Pro Circut (1 replies)
- edelbrock doug eichner series carb (2 replies)
- anybody have exhaust for a 250ex they wanna sell?? (2 replies)
- after market chain ???? (4 replies)
- Gearing for dune riding (2 replies)
- whats wrong? (13 replies)
- porting a 250r??... does it help (7 replies)
- hot cams (10 replies)
- jetting question (5 replies)
- help (3 replies)
- Jetting question (9 replies)
- Port n Polish? (6 replies)
- gearing? (4 replies)
- 250ex pipe (0 replies)
- TC Shorty exhaust?? (4 replies)
- Power gains from cam and piston?? (5 replies)
- need help with clutch 400ex (9 replies)
- clutch troubles (3 replies)
- 440 big bore kit? (3 replies)
- #40 pilot in 400ex question (3 replies)
- wrist pin seized (4 replies)
- Spark plug (3 replies)
- Oil (7 replies)
- EMGO Oil Filters for 400EX (2 replies)
- Air vent holes/jetting? (3 replies)
- what cdi's work in winter? (2 replies)
- 416 engine gaskets? (2 replies)
- t-4 for 250ex (0 replies)
- Sparks Key or 14T Sprocket? (3 replies)
- which pipe (3 replies)
- conversion (2 replies)
- Rancher Idle/Acceleration Problems (5 replies)
- where to find odds and ends for 250x engine? (5 replies)
- I am jetting this weekend (2 replies)
- Bleed the brakes? (3 replies)
- air comming out the sprocket??? (4 replies)