- ? on motor work? (14 replies)
- Info on 400EX 440 kits (4 replies)
- how to, untap?? (7 replies)
- port work... (2 replies)
- race gas????? (3 replies)
- best carb for 400? (7 replies)
- Airbox lid??? (11 replies)
- running way lean!!!!!HELP!!!!! (13 replies)
- Barnett clutch kit? (3 replies)
- 440 Kit Carb? (6 replies)
- part number for selenoid? (2 replies)
- fmf pc IV s/a, need silencing advice (6 replies)
- Dropped valve on 400ex...HELP (4 replies)
- Race gas for R (2 replies)
- thoughts on tc and sparks exhausts? (1 replies)
- Plugs and leaded gas... (8 replies)
- carb (13 replies)
- ? on axle install (9 replies)
- rebuild kit for a 39fcr ? (2 replies)
- easiest ways to take off the axle lock nut? (12 replies)
- disks on 4 stroke exaust's (7 replies)
- 1993 300ex starter key, missing (5 replies)
- starter slips, wont start!!! (0 replies)
- 250r Paul turner pipe question (2 replies)
- engine swap into my crap quad? (2 replies)
- jetting for sparks exhaust on 300ex (1 replies)
- sparks exhaust sound clip(300ex) (0 replies)
- stock exhaust mod (13 replies)
- best exhaust,sparks or ct racing? (8 replies)
- 400ex head work experiences? (1 replies)
- white brothers powerfilter (7 replies)
- need help quick (6 replies)
- biggun or dmc (11 replies)
- 250r pipe shootout (9 replies)
- XR only "HRC copy cam"??? (12 replies)
- what oil in my 250R?? (5 replies)
- exhaust question(quick reply)! (4 replies)
- taking top end apart on 300ex (2 replies)
- UNI question (3 replies)
- Rejet w K&N (2 replies)
- how to take off the axle (11 replies)
- clutch levers (0 replies)
- pipe (2 replies)
- Magura - What type of oil (2 replies)
- 250r guys please help. (6 replies)
- Magura Hydraulic Clutch? (14 replies)
- can you put reverse on stock 400ex? (13 replies)
- FINALLY - an aftermarket oversized oil cooler kit (9 replies)
- 440 Question (13 replies)
- cold starting (14 replies)
- 440 kit- do i have to run racing fuel even if i get a bigger oil cooler (7 replies)
- help 416 motor setups (7 replies)
- HMF Exhaust/FCR carb jetting (10 replies)
- Sparks or K&N??? (4 replies)
- Crf450 Yzf450 Yzf426 Wr450f????? (7 replies)
- White Bros Rev/CDI Box? (11 replies)
- headgaskey for a440? (1 replies)
- exhaust packing (0 replies)
- 330 Kits (10 replies)
- 500cc Stroker Kit (4 replies)
- cr250 cylinder (2 replies)
- by the way (0 replies)
- LRD Pro 4 Seris question? (3 replies)
- 300 problems (1 replies)
- Best Bore Kit???........ (3 replies)
- breakin time? (2 replies)
- New Plan!!!! (4 replies)
- Piston? (20 replies)
- Difference between 400EX and Z400 (9 replies)
- alumiumn air box (14 replies)
- lrd slip on? (4 replies)
- Rear bearing kit install? (1 replies)
- Chain Roller and sliders (1 replies)
- Rejetting Question - Should be easy. (7 replies)
- Head Gaskets (7 replies)
- cdi unit (0 replies)
- What kind of tools will i need-440 kit?? (12 replies)
- Stroke measurement? (3 replies)
- Edelbrock Carbs and Customer Support (0 replies)
- Swingarm bolt siezed please help!! (19 replies)
- wheres the ari fuel mixture on the carburator for the 400ex (4 replies)
- popping when i let off the gas (7 replies)
- Hey guys what do you think (8 replies)
- got it (4 replies)
- 400ex Carb On a 300ex (17 replies)
- jetting for pro circuit t-4 (10 replies)
- Sprockets (1 replies)
- 600cc Quad (7 replies)
- jetting for galmis (0 replies)
- HELP! My Yoshi is fubared! (6 replies)
- Engine calculator (1 replies)
- What to put on my base gasket? (1 replies)
- JE 426 11.1 is pump gas oK? (14 replies)
- Drag race results with new HMF (8 replies)
- air box replacement (4 replies)
- main jet adaptor (6 replies)
- jetting? (2 replies)
- 250r axle (0 replies)
- Adjust valves (6 replies)
- Plug is white ... what next? (2 replies)
- 450r or yfz450 (22 replies)
- Is an oil cooler necessary? (11 replies)
- Old or new big gun??? (3 replies)
- stage 2 hot cam loss in low end? (20 replies)
- Reliability?? (1 replies)
- Steel base gasket? (1 replies)
- 39 fcr needles emp vs. stock (4 replies)
- help need info on buying gaskets (4 replies)
- Question about knocking / tapping sound in engine. (15 replies)
- Removing Motor from frame (5 replies)
- Jetting help!? (3 replies)
- fmf power bobm header (8 replies)
- 400ex hubs on a 250x? (1 replies)
- carb problems (8 replies)
- New 250EX transmission noises? (7 replies)
- 250X reverse gears mod (8 replies)
- 250r Jetting (13 replies)
- top end gaskets (3 replies)
- Anyone looking for a NEW TRX250R? (14 replies)
- Timing, and jetting settings (3 replies)
- clutch problems (17 replies)
- 440ex e-series jetting (4 replies)
- Help me with LT230E (0 replies)
- still confused (4 replies)
- low end boost (24 replies)
- XR650 motor (2 replies)
- will i need to do anything to the carb??? (2 replies)
- performance upgrade question (7 replies)
- stock 400ex speed? (1 replies)
- DB Levels (1 replies)
- best big name motor shops (8 replies)
- Is my counter-ballance off? (13 replies)
- reausable oil filters (3 replies)
- 350x wiring (2 replies)
- HMF exhaust... (5 replies)
- My Jetting (51 replies)
- POst ur pics here of any thing wit an engine (5 replies)
- fastest quad (21 replies)
- Scratches on Sidecase (1 replies)
- how reliable is your 440? (8 replies)
- trouble w/puttin exhaust on!(please help) (14 replies)
- Clicking (14 replies)
- Big Gun Race Exhaust (2 replies)
- types of hubs on dura blue axle? (2 replies)
- ok now what (8 replies)
- which WB exhaust is a full exhaust? (4 replies)
- buying a used 440 kit (9 replies)
- best pipe 4 my 300ex??? (5 replies)
- Motor Work for my 330 (4 replies)
- FMF Megamax2 vs WB E Series. (6 replies)
- CRF450 Engine Swap (1 replies)
- should i see good gains...? (6 replies)
- curtis sparks 300ex exhaust jetting (0 replies)
- 250x kick starter on 300ex engine (5 replies)
- 250x HELP!!! (5 replies)
- Electrical problem fixed!-answer- (3 replies)
- emergency (5 replies)
- check this out (9 replies)
- TC Racing camshaft specs (17 replies)
- FDO racing (1 replies)
- Hinson (4 replies)
- 300ex wiring diagram (4 replies)
- Took the head off today and this is what i see? (3 replies)
- eSeries just came! Question. (11 replies)
- more power (4 replies)
- help quick (3 replies)
- neutral light won't come on.... (6 replies)
- 350x Jetting (1 replies)
- 4-snow tires (1 replies)
- clutches? (7 replies)
- 440 strokin (2 replies)
- what compression to use on 440 kit? (11 replies)
- Help - Spark Plug wont go back in (6 replies)
- starter blow up (1 replies)
- What ao i need to make a 400 a 416?? (4 replies)
- Y would u remove the choke?? (5 replies)
- shift fork/bottom end (3 replies)
- changing my gears how much would it cost? (9 replies)
- sproket size (10 replies)
- block off plate (3 replies)
- Best Pipe For Xc (0 replies)
- what is the part where the engine builder engraves their name on the motor (5 replies)
- How can I tell if my flywheel has been lightened? (2 replies)
- jetting question (2 replies)
- 300ex problems (3 replies)
- K&N or UNI???? (2 replies)
- CBR600 Motor in 400Ex Frame (26 replies)
- Cam 2 (1 replies)
- headers for white brothers (12 replies)
- Best clutch? (4 replies)
- big bore for trail/mx? (7 replies)
- liquid cooled 400ex (23 replies)
- FDO 463 Kit or other bigger bore motors. (1 replies)
- removing stuff?? (7 replies)
- hmf vs lrd (18 replies)
- stock jet with new pipe (4 replies)
- any input appreciated (4 replies)
- Really need your help! (11 replies)
- plug check (9 replies)
- What kinda oil (12 replies)
- 300ex Gussets (2 replies)
- electrical problem (1 replies)
- Outerwear airbox lid? (11 replies)
- starting in gear? (3 replies)
- pilot jet (8 replies)
- HELP question on 440 kit (4 replies)
- test cdi box? (2 replies)
- sparks racing x6 (9 replies)
- (Help) 400ex header question (4 replies)
- 250ex (5 replies)
- CT RACING Pro-X Cyclinder kit (16 replies)
- jetting help (6 replies)
- white brothers or curtis sparks (8 replies)
- 416 or 426 (6 replies)
- RPM dominator questions (3 replies)
- ex400 piston pin (1 replies)
- Electrical Stumper (10 replies)
- DG Stage 3 Xccelerator (2 replies)
- Jetting Question (10 replies)
- runs like crap after anything more than 1/4 throttle...popping and black smoke galore (15 replies)
- 400ex Slip-on exhaust issues!! (5 replies)
- 300ex motor work (2 replies)
- Sparks carb modification? (12 replies)
- Which kind of chain and what size? (21 replies)
- 416 Motor Help (16 replies)
- 400ex engine into 250x frame - has it or can it be done? (12 replies)
- cr500 engine in 250r frame? (25 replies)
- Pro design kill switch on EX (1 replies)
- Can i run pumped gas on 440ex 11:1 or do i have to go with 10:3.1 (13 replies)
- White Brothers Exhaust (6 replies)
- Dual Exhaust (5 replies)
- hmf exhuast pics (2 replies)
- shifting and clutching question (10 replies)
- hmf pipe does not fit (8 replies)
- will a 400ex a/m axle fit on my 300ex? (6 replies)
- What pipe is best for the money for 400ex (14 replies)
- 300ex sprockets (3 replies)
- Oil?? (4 replies)
- Got a question. (8 replies)
- what kind of motor for 250r should i do? (6 replies)
- carb selection (5 replies)
- need help on a question on the clutch (3 replies)
- gearing (0 replies)
- can colby get stock 39fcr needles ? (4 replies)
- Sparks Timing Advance Key (2 replies)
- FMF Powerbomb Header?? (3 replies)
- Strokin a 440? (21 replies)
- Oil leak (5 replies)
- another request for expert jetting question (2 replies)
- stator output 400ex (2 replies)