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- 440 jetting (9 replies)
- Oil question??? (3 replies)
- Anybody running a Lectron carb on your 400ex? (1 replies)
- Ticking from engine, How loud should it be (6 replies)
- Who has the most power????? (0 replies)
- Fcr Group Buy (4 replies)
- a couple of questions (1 replies)
- Cam (3 replies)
- aftermarket headpipe??? (5 replies)
- I Want My 300 To Run Fast~!!!!!!! (9 replies)
- WB pipe (3 replies)
- swing-arm bolt (4 replies)
- best pipe for 300ex? (10 replies)
- FCR Info Update (2 replies)
- 250X troubles ? Help Please ! (1 replies)
- Need your opinions on my 250X (1 replies)
- DS650 Carb on a 400ex (3 replies)
- exhaust (1 replies)
- What Cam for 300EX???? (14 replies)
- exhaust (0 replies)
- 330 kit question (1 replies)
- Crancase Breather box (0 replies)
- Excuse my ignorance (7 replies)
- Golden West Cycle???? (4 replies)
- Can anyone tell me what pipe this is (21 replies)
- Pro Circuit T-4 QUESTION!!! :) (17 replies)
- Stock HI comp. bore/ XR cam?? (12 replies)
- 250x won,t start still. (2 replies)
- 300EX intake (4 replies)
- Back pressure (1 replies)
- NOS, Anyone using it? (25 replies)
- boring to 330 (1 replies)
- CDI Box?? (18 replies)
- 400ex carb on 300ex? (6 replies)
- im getting a powroll 415exkit but i got ??????? (4 replies)
- Just order my FCR! (2 replies)
- Synthetic Oils for the 400ex???? (13 replies)
- Great Article on Jetting (1 replies)
- FCR Carb (16 replies)
- 350x quad? (3 replies)
- WB Eseries (2 replies)
- Changing the Slow (Pilot) Jet (1 replies)
- Check out this big MOFO (7 replies)
- 14t on 300ex (1 replies)
- Keihin Carbs (2 replies)
- Airbox lid or not?? (13 replies)
- larger oil cooler?? (2 replies)
- I need top end!!! (14 replies)
- oil cooler ?? (6 replies)
- larger oil tank?? (2 replies)
- !!Need help please respond !! (2 replies)
- TC Racing port recommendation,,helpful info (14 replies)
- Port work,,,,how much $$$$ (28 replies)
- motor cuts out in the air (6 replies)
- 250ex jetting ? (0 replies)
- Powroll Vented Airbox Lid?? (3 replies)
- Awesome Mod (Recomended) (10 replies)
- Qwiksilver carb for 300ex? (2 replies)
- How do you set Camshaft timing on 400? (3 replies)
- blue tint on header pipe,,but it wipes off (8 replies)
- plug color (1 replies)
- help 440ex burning oil (3 replies)
- ?? for WB complete system owners (5 replies)
- snorkel on or off? (6 replies)
- how to change a pilot jet??? (3 replies)
- HRC cam? (1 replies)
- Supertrapp IDS2 (1 replies)
- YZ400 powered R's... Why are the YZ400's so hard to start? (14 replies)
- Anybody know? 81' Elsinor (7 replies)
- K&n power kit (1 replies)
- Whats going on here lean orfine ?????????? (6 replies)
- blown up 250R motor (5 replies)
- 416, 426 (1 replies)
- pipe (9 replies)
- I need engine help guys!!!!Badly! (3 replies)
- JE or Wiseco piston ? (8 replies)
- Just ordered my 440 kit!!!!!! (8 replies)
- Carb help! (1 replies)
- Question on aftermarket pipes! Please reply (15 replies)
- Carb help Please! (2 replies)
- Exaust question??? (4 replies)
- I'm new... My 400EX won't start! (16 replies)
- Another Jetting Question... (9 replies)
- Motor (4 replies)
- pc t4 with quiet core (2 replies)
- jetting (5 replies)
- Help..case repair?? (13 replies)
- what is the amount of oil recomended in a 400ex? (5 replies)
- Pilot / Slow Jet (3 replies)
- jetting help!!!! (2 replies)
- FCR or Edelbrock (13 replies)
- 440 sleeve question ????? (2 replies)
- what gaps??? (3 replies)
- high compression stock bore? (9 replies)
- 406 piston ---how much horsepower? (1 replies)
- FmF Q-4 pipe Question (5 replies)
- 416 or 440 ? What is the difference? (15 replies)
- white brothers pipe cracked!! (9 replies)
- Ok I need advice here.... (4 replies)
- !Please help! (8 replies)
- 300EX hopup on SportQuad.com (0 replies)
- intake (5 replies)
- High altitude jet suggestions (2 replies)
- Oil Level (6 replies)
- Fouling Plugs (3 replies)
- Next Modification? (7 replies)
- Help--- 300ex Is Dying (6 replies)
- Help me!Mechanics What are your thoughts?????? (3 replies)
- Getting a 440, what kind?? (10 replies)
- Race I had questions as in jet kits, pipes Etc... (7 replies)
- 400EX Best pipe? (7 replies)
- sparkplug boot (1 replies)
- installing a high compression piston (1 replies)
- Headpipe Bolts (2 replies)
- where can i get... (3 replies)
- Sparks Advance key (1 replies)
- installing a cam (3 replies)
- 400ex Smoking (5 replies)
- ahhhhhhh (13 replies)
- What to get? (5 replies)
- high compression (2 replies)
- Pilot jet question????? (1 replies)
- slow uphill it dies (5 replies)
- Wrong forum sorry (1 replies)
- Help It wont start!!!! (0 replies)
- ooo , i dont think thats good (3 replies)
- Yosh Exhaust (1 replies)
- Which Is Better For Drag Racing? (5 replies)
- which cam with 440 kit (5 replies)
- e-series help for 400ex (4 replies)
- WANTED! 250R ported cylinder! (5 replies)
- Jet Size????? (11 replies)
- what to do.... (9 replies)
- valve adjustment (4 replies)
- Dmc full exhaust jet ques. (9 replies)
- pilotjet/choke removal (1 replies)
- i have a FMF megamaxi 2, what would be the best way to run it? (2 replies)
- jet suggestions please! (6 replies)
- Do You Think This Will Help???? (2 replies)
- E Series Slip On For T-4 Or R4 (1 replies)
- Polishing Pipe (2 replies)
- K&N power kit... (11 replies)
- I think I might have got water in my engine (6 replies)
- answers roost boost (6 replies)
- Upgradeable Exhaust (5 replies)
- What next for 300ex (11 replies)
- Is porting worth it? (9 replies)
- Gabe"s stock pipe mod (12 replies)
- Precharger and rejetting (1 replies)
- Carb Jetting Question (0 replies)
- High compression piston.....Need advice (7 replies)
- Zmax (3 replies)
- White bros. R4 or E Sreies (13 replies)
- Different Carbs??? (2 replies)
- Gt Thunder Cam And 12.5 Update!! (3 replies)
- Hey Someone Help ---oil On Motor (6 replies)
- cams (1 replies)
- full exhaust (6 replies)
- Choke Removal (3 replies)
- Help My Clutch wont work!!! (6 replies)
- Cleaning carb. (9 replies)
- jet size???? 416 kit (7 replies)
- I Think I Am Rich!! (3 replies)
- New oil discovered! cooler running temperature (13 replies)
- any suggestions on jet size (0 replies)
- Supertrapp IDSII (5 replies)
- K&N precharger (2 replies)
- 3" SuperTrapp with Powroll Oversized Header ??? (1 replies)
- DMC Alien Exahust (5 replies)
- exhaust and carb need help (5 replies)
- not getting fuel? (7 replies)
- Paper or Plastic? well Foam really.. (3 replies)
- air screw with FMF Megamax/6 discs (0 replies)
- tc racing pipes? (8 replies)
- check your throttle adjustment! (0 replies)
- Everyones Attention Please!!!!! (22 replies)
- Hey all WB slip on pipe owners once again another pipe question (5 replies)
- HP Rating of a 440 (11 replies)
- How much more horse will the wb header give (5 replies)
- Which brand clutch plates are best? (12 replies)
- Hydraulic Clutch (12 replies)
- Water problems (8 replies)
- Tires (0 replies)
- anyone too lean? (7 replies)
- Yoshimira Pipe Questions... (5 replies)
- 300EX power (amps) output??? (1 replies)
- procircuit pipe (14 replies)
- KOLD AIR in airbox (10 replies)
- Curtis Sparks Pipe (9 replies)
- Rings Are Stuck!!!! (15 replies)
- Does this Sound Right (3 replies)
- chains (1 replies)
- Best Headpipe? (1 replies)
- white bros. all around cam? (4 replies)
- Another 400 not starting, any ideas? (11 replies)
- Pipe Is Melting (1 replies)
- blue header pipes (7 replies)
- Ignition Coil??????? (0 replies)
- pipes (1 replies)
- clutch on 250x need help (0 replies)
- Gearing (7 replies)
- strange acceleration with my 400ex (14 replies)
- Advanced timingn key? (0 replies)
- 400ex carb (0 replies)
- 416 or 440?!?! (8 replies)
- Will this hurt the filter? (10 replies)
- Dual Oil Coolers? (5 replies)
- Help 400ex Won't Start!!!! (6 replies)
- HELP??? Polishing cases (26 replies)
- How's this sound?? (2 replies)
- White Bros Power Kit? (1 replies)
- Buried my quad! (5 replies)
- want more low end (3 replies)
- use your foot for reverse (10 replies)
- Bills Or Wb E-series (9 replies)
- Gain from cam and piston (8 replies)
- Running Rich (1 replies)
- frankly... pipe (7 replies)
- e series or r4 (4 replies)
- sometimes my neutral light dont work?? (3 replies)
- what size sprocket would be best? (6 replies)
- xr250 black box (6 replies)
- what about the new hondas (15 replies)
- Cam Setup???????? (1 replies)
- Trick fuel in a stock 400ex? (8 replies)
- 300ex how many miles approx to get a rebuit engines (1 replies)
- a new pipe (1 replies)
- aftermarket rev limiter (0 replies)
- new carb (0 replies)
- aftermarket rev limiter (6 replies)
- 416 cost? (6 replies)
- 250ex Pipe? (2 replies)
- Questions about getting a headpipe for my slip on? (1 replies)
- head job ? (9 replies)
- What exhaust? (9 replies)
- 416 reveiw (3 replies)
- Oil Question, ASAP (3 replies)
- is a 14 front sprocket worth it for a 300ex?? (3 replies)
- Adjusting Valves (8 replies)
- HP of 400ex? (7 replies)
- anyone tried the wiseco 10:1 (13 replies)
- Cam And Piston (2 replies)
- cams (22 replies)
- Installing A New Carb Jet (2 replies)
- Oil Cooler (2 replies)
- Piston Help (8 replies)
- what is the right quad to get? (9 replies)
- Pro Circuit T4 / Quiet Core insert? (11 replies)
- what pipe should i get (3 replies)
- what are the best upgrades for lots of power (9 replies)
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