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- I need more power! (2 replies)
- Newbie! need some help... (11 replies)
- Installing JE 416 piston, simple question? (4 replies)
- 250ex Backfiring and popping, please help! (3 replies)
- more POWER (3 replies)
- Valve spring compressor (4 replies)
- HELP: my exhust is throwing 20" flames HELP (18 replies)
- 300ex head (1 replies)
- What kinda top end kit dosen't (4 replies)
- powroll what do u think? (13 replies)
- Hey Warrior Man... (1 replies)
- where to get jets? (2 replies)
- jetting & gearing at Dumont? (2 replies)
- 300EX / 250X Snorkel ??? (2 replies)
- Doing some mods and have a Question (1 replies)
- twin pipes for the 400ex (25 replies)
- white smoke (5 replies)
- Water getting into the air box 250x (0 replies)
- Where to start for a 416 kit? (2 replies)
- 330 Big Bore Kit (1 replies)
- This can't be right, FCR 39mm? (2 replies)
- What do you MX racers do to your snorkal? (15 replies)
- 400EX Cams (1 replies)
- Jetting 400EX w/K&N and 11:1 Wiseco (0 replies)
- 36mm mukini (2 replies)
- k+n filter jetting (0 replies)
- directhits ignition system best bang for buck (0 replies)
- just testing (1 replies)
- best pipe for 250ex (19 replies)
- jetting with an fmf (4 replies)
- Shifter wore hole in crank case (7 replies)
- hmf for 250ex (1 replies)
- How to make airbox? (1 replies)
- cr500 motor in a 400 ex (4 replies)
- procircuit t-4 slip on for a 400ex (7 replies)
- cam (0 replies)
- Grindin Welds (8 replies)
- XR400 Cam??? (1 replies)
- Nerf bars (2 replies)
- Flow numbers? (12 replies)
- XR650R powered quad or??? (0 replies)
- Clutch? (2 replies)
- ATTN: Mickey Dunlap (3 replies)
- pipe and air filter (5 replies)
- Need Help! What Pilot To Run With A 440? (2 replies)
- Oil Out Of Crank Case...but No Crack Help (3 replies)
- Removing Exhaust baffel (1 replies)
- r-seriers vs. e-seriers (1 replies)
- I bent my WB PIPE already (4 replies)
- WB Eseries RESULTS as promised. (20 replies)
- Is this a pilot ??????????? 400EX CARB (4 replies)
- Please Help Me Quickly!!!!!!!!!! (6 replies)
- valve help (2 replies)
- I need help with my set-up (5 replies)
- Curtis Sparks 39mm FCR Throttle Cable? (1 replies)
- Is it worth buying the jet kit? (2 replies)
- CDI boxes again (6 replies)
- 250R Motors (4 replies)
- 440 kits (1 replies)
- I got my WB Eseries Today!! (3 replies)
- Energy Release? (2 replies)
- 440vs416 for hillclimbing!!!! (3 replies)
- Cold Weather+No Choke+42/45 Pilot=hard to start or not? (13 replies)
- Skid Plate (7 replies)
- Dyno (0 replies)
- Powercore Iv-2 Q S/a (9 replies)
- 400ex stroker crank (0 replies)
- Inline Fuel Filters (13 replies)
- K&N Filter (2 replies)
- 440 ex first ride results (0 replies)
- WB E-series tunning (8 replies)
- Question on instaling and jetting wb e series? (2 replies)
- what 400ex exhaust? (12 replies)
- Engine ticking some help (1 replies)
- If you know the 400 motor stop here! (21 replies)
- rev limiter (3 replies)
- Rockymountainatv (7 replies)
- IDS2 for 300EX... (4 replies)
- 440ex... please help me with my CARB (10 replies)
- 400ex carb and 350x air boot (2 replies)
- pro circuit (3 replies)
- 400ex ring gap (9 replies)
- 416 going In NEED HELP/ASAP (9 replies)
- HELP FAST I am removing my choke plate an got a question (2 replies)
- Stock Engine, Oversized Headers (13 replies)
- review on the 250ex big gun slip-on (0 replies)
- 250x top end noise (0 replies)
- 416???? (16 replies)
- Rejetting Question (2 replies)
- Poweroll (1 replies)
- 400ex MODS (4 replies)
- Removing a link. (9 replies)
- 39mm Carb,,,what end result?? (3 replies)
- Lectron Carb Please help (22 replies)
- welds on head pipe? (8 replies)
- 416 kit (2 replies)
- high revving a 440 (3 replies)
- motor not pulling to redline (6 replies)
- Air box vents? (8 replies)
- Cracked piston? (2 replies)
- 400ex spark arrester (4 replies)
- Pic of the Trx465 (8 replies)
- xr400 cam in a 440? (6 replies)
- FST 440 kit (17 replies)
- Carb troubles (7 replies)
- Chains/sprockets (1 replies)
- 300ex problem(because it is so cold) (0 replies)
- 39 FCR carb help! (14 replies)
- Motor Life (14 replies)
- Last Sunday I got bored and......... (3 replies)
- reverse kit for 400 ex (2 replies)
- Where to buy yoshi/e-series from? (5 replies)
- Big Bore Kit? (0 replies)
- 416 gaskets? (0 replies)
- Yoshimura, WB and dmc pipes for a 300ex (11 replies)
- choke removal? (8 replies)
- 250x valve specs and comp ratio ??? (2 replies)
- spark arrester (0 replies)
- Marcums 416 kit (18 replies)
- Is 165 main jet too large? (17 replies)
- Carbueration advice please? (9 replies)
- Sparks or E-series? (4 replies)
- It's on it's way!!!!!!!!!!!!!!!! (7 replies)
- best place to get a k&n power kit (6 replies)
- has any body ever done a weelie on a 250ex and gas leeked (6 replies)
- Oil strainer screen (1 replies)
- Exhaust ? (0 replies)
- 440 Jetting (0 replies)
- Rev box (3 replies)
- 400EX head bolt specs.(i need them today) (4 replies)
- Q-Series??? (9 replies)
- bore it.. or sale it? (33 replies)
- What gasket should I use w/ a 416 kit? (9 replies)
- 330R vs. Cannondale speed (9 replies)
- Best pipe for Stock 400ex (19 replies)
- TC racing cam (5 replies)
- Proper break in for a 416EX? (9 replies)
- Choices Choices (0 replies)
- 400ex Cams (0 replies)
- 250r engine in 300EX frame?? (0 replies)
- 350X Exhaust (7 replies)
- hinson clutch and hydraulic clutch kit compatability (1 replies)
- 250r front calipers on a 400ex? (2 replies)
- yoshimura sound anything like supertrapp? (14 replies)
- Fram oil filter part numbers (0 replies)
- 250x to 350x?? (0 replies)
- 14t front sprocket and stock chain??? (7 replies)
- Tc Racing (25 replies)
- White Brothers or DMC? (3 replies)
- Trinity 465 Stroker (165 replies)
- 416 or higher comp. ratio? (2 replies)
- 416 jetting (5 replies)
- 330R or 440EX (13 replies)
- 400EX with XR650 engine? (2 replies)
- 2 stroke piston and compression (3 replies)
- Valve clearance...... (1 replies)
- HMF engineering slip-on (6 replies)
- Sparks (4 replies)
- piston question (0 replies)
- Stock bore 10.8-1 piston + XR400 Cam? (10 replies)
- Seriously,Can a 416ex Smoke a Raptor? (5 replies)
- Sparks Pipe Question (45 replies)
- xr's hrc copy cam? (2 replies)
- main jet in 300ex (2 replies)
- 300 EX axle replacement (2 replies)
- slipping clutch!!!! (2 replies)
- Viton Valve Seal Install.....Please Help (1 replies)
- A 250x Question (7 replies)
- Also Reverse rev Limiter ? (13 replies)
- Rev Limiters ? (8 replies)
- 12.5-1 vs 10.8-1 piston (9 replies)
- HRC cam - no new piston (13 replies)
- FST 300 oil cooler (18 replies)
- Hesitating? (4 replies)
- 36mm carb (5 replies)
- cam in a 400ex... (16 replies)
- oversized headpipe needed (1 replies)
- Barnett Clutch Plates?????HELP (4 replies)
- leaking oil (6 replies)
- This is getting OLD (23 replies)
- main and piolit jetting (1 replies)
- running alcohol on my 400ex (2 replies)
- dumb ? (5 replies)
- 300 cdi (3 replies)
- 500cc Big Bore Kit (4 replies)
- 400ex COOL KIT ???? (4 replies)
- 350x 5 or 6 speed?? (10 replies)
- Gear Ratio Calculator!!!! Good thing to use (2 replies)
- Need some advice..... (14 replies)
- K&N jet kit question (1 replies)
- New life for Cobra exhausts???? (1 replies)
- Shift rod broken (1 replies)
- Hrc Not Much Better Than Stock (5 replies)
- air filter question! (12 replies)
- alum airbox (2 replies)
- a few questions on installing cam/springs? (1 replies)
- Which Clutch? (4 replies)
- E-sereies.......... regular or promeg ?????? (2 replies)
- cr250 motor in a 300 (12 replies)
- off set fly wheel key (1 replies)
- Durablue Posi-Lock Nut ??'s (1 replies)
- 250 X jetting question (3 replies)
- Powroll Engines (11 replies)
- Seriously, is the 400 EX as fast as a....... (5 replies)
- better then the t-4 (16 replies)
- what store is the best place to order (5 replies)
- info needed for a roost boost plus (2 replies)
- magura clutch (2 replies)
- header pipe (7 replies)
- spockets ? (4 replies)
- Is there machine work required for the 416 kit (4 replies)
- tc racing pipe (3 replies)
- NO NEED For BIGGER CARB? (3 replies)
- 400ex cam?? (19 replies)
- Benefits of a 14 tooth sprocket??? (2 replies)
- How far over is a 416? (1 replies)
- Stock Header Removal?? (1 replies)
- XR650 Engine (19 replies)
- Weird grinding noise... (8 replies)
- 416? (13 replies)
- Oil tank leaking (2 replies)
- fourstroke tech 330 (3 replies)
- 440 or 416 (14 replies)
- WB E-Series vs. Big Gun??? (14 replies)
- just bought the WB full race kits! your thought's please! (3 replies)
- Clutch cable? (0 replies)
- Air Screw (9 replies)
- rims are scratched to easy (4 replies)
- LRD EXHAUST please help (2 replies)
- Millienium Tapered bearing Carrier (3 replies)
- performance help (10 replies)
- Building up Brother's 400EX (3 replies)
- lowering the engine temp? (2 replies)
- Cheapest place to buy Keihin carb? (7 replies)
- To Port & Polish or To Big Bore for the 400ex (16 replies)
- electrical question (3 replies)
- 300ex Exhaust (5 replies)
- Power for my 250x (9 replies)
- compression reading=what ratio??? (1 replies)
- help on 440 (2 replies)
- not to my studies (0 replies)
- 750ex (20 replies)
- 250ex power (0 replies)
- Jetting??? (0 replies)
- pipe fmf (0 replies)
- dyno charts (0 replies)
- 250ex (3 replies)
- Carb/jetting Question (2 replies)
- front sprocket (4 replies)
- stock axle sprocket hub (1 replies)
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