- Questions....reply (18 replies)
- 350x For $250 (3 replies)
- Jetting (1 replies)
- compression ratio (8 replies)
- 465 kits (5 replies)
- ? on my stock 400 axle (5 replies)
- header pipe??? don't know if i have it on right (9 replies)
- Jetting i think (4 replies)
- Breaking stock chain....... (3 replies)
- 416... yes again (11 replies)
- FMF or White Bros? (22 replies)
- EX torque specs (4 replies)
- atv english project (2 replies)
- remove air box lid on 300? (6 replies)
- 440ex FCR carb Jetting (9 replies)
- 250x rebuild (3 replies)
- jet question (4 replies)
- any taller riders riders ,over 6 feet on a 250 r quad and if so how cramped are you (10 replies)
- what can i do to get for more power? (9 replies)
- 400ex motor in a 300ex? (12 replies)
- 2-stroke exuast question (1 replies)
- exhaust vavles... (1 replies)
- 250X top speed (5 replies)
- sparks cams (8 replies)
- 350x Head On 250x????? (21 replies)
- got a question on sum diff. parts (3 replies)
- gjt (2 replies)
- Front sprocket question? (17 replies)
- Wiesco Pistons (16 replies)
- Who Makes Drop In Cams (10 replies)
- 1st ride with new mods (0 replies)
- Midified Stock CDI? (3 replies)
- Has N E 1 used PROFABATV.COM (9 replies)
- Stock db (1 replies)
- AFT Carbs (0 replies)
- My Friends got the Fastest 400 around!! (70 replies)
- Sell 250ex for Z400 (11 replies)
- 440 carb setup (9 replies)
- Curtis Sparks Cam Anyone? (13 replies)
- Part Sources.... (1 replies)
- TC slip on?? (8 replies)
- Sprockets (4 replies)
- Port or oversized valves? (29 replies)
- Stuck Valve? (10 replies)
- K&N Airfilter oil.....How to apply onto the airfilter?? (4 replies)
- best low end (7 replies)
- gas filter (3 replies)
- fcr39 yet again (6 replies)
- Im gonna build a yz quad (3 replies)
- outerwear?!?! (1 replies)
- please help fast (14 replies)
- air box (2 replies)
- Front Tire Help !!!! (2 replies)
- Rtc Costomer Service (1 replies)
- jetting 300? (2 replies)
- 39MM OR 40MM fcr (11 replies)
- LRD exhaust for 400EX??? (24 replies)
- aftermarket piston (5 replies)
- help? (7 replies)
- just wondering (0 replies)
- Which Sprockets (4 replies)
- need a used stator (0 replies)
- Airbox ? (27 replies)
- piston rings ect..... (6 replies)
- keep up w/ a 400 (37 replies)
- battery?!?! (2 replies)
- rev kit? (4 replies)
- 300ex problems (18 replies)
- molybenydum WTF (31 replies)
- Hotcam Reply (6 replies)
- Universal kill switches (1 replies)
- straight Pipe (10 replies)
- Oh boy i need help (22 replies)
- 250X to 350X (5 replies)
- pipe for 300ex (5 replies)
- trued and welded? (0 replies)
- Idling High (7 replies)
- % of jetting lost due to colder air (weather) (1 replies)
- spark plug condition? (2 replies)
- Decibel level of stock EX (12 replies)
- header ? (2 replies)
- throttle lever play (5 replies)
- FMF Powerbomb and PowerCore 4 (7 replies)
- Dial - A - Jet and Exhaust (2 replies)
- Stock headpipe welds (1 replies)
- ignition key (8 replies)
- Jardine (6 replies)
- Hot cam stage 2 (2 replies)
- Decking for 440 (4 replies)
- question about fst's 330 kits (1 replies)
- What jetting for pro-circuit t-4 with k&n air filter (4 replies)
- Cleaning sidewinder chain and sprockets? (5 replies)
- What's this ? (7 replies)
- Pro Design Cool Head (13 replies)
- which is faster,350x or 400ex (5 replies)
- 400ex Eliminator Axle & 300ex Eliminator Axle? (0 replies)
- Jetting (1 replies)
- pro circtut t4 slip on (19 replies)
- 400ex crank case (1 replies)
- WB R4 Questions (1 replies)
- R head gasket leaks. Need some help. (8 replies)
- Warrior V.S 400ex (45 replies)
- Did i mess it up? (11 replies)
- HOT motor? (7 replies)
- WEB CAM any good!!! (4 replies)
- What pipe for my Nik's engine? (0 replies)
- My cr250 motor has a hole under the water pump and it leaks antifreeze?? (6 replies)
- Idle scew on 400ex. (5 replies)
- Z-400 won't idle!? (10 replies)
- sealant on leaky 400ex valve cover? (3 replies)
- .060 (1 replies)
- extended swingarms (3 replies)
- pilot jet (5 replies)
- wanted, crank shaft assembly for 400ex (0 replies)
- Is this true or not (11 replies)
- question? (3 replies)
- powerbomb (7 replies)
- Finish this problem...... (5 replies)
- Seal on the side of the engine???? (2 replies)
- white bros. pipe? (3 replies)
- Tip: Yz motors need water (8 replies)
- Headpipe Glowing? (9 replies)
- Which Exhaust For a 250EX (7 replies)
- Sparks X-4 (400ex) (21 replies)
- anothr brain teser on the 300 (1 replies)
- Air Box Lids... (35 replies)
- 300ex Yoshimura Slip On 4 Sale (1 replies)
- People who know alot about 250X/300EX engines - (5 replies)
- Removing Choke (4 replies)
- HMF pipes (2 replies)
- 250ex pipes (3 replies)
- Magura install ? (6 replies)
- Renthal Sprockets???????????? (2 replies)
- Edelbrock carb questions (5 replies)
- Helppp!!!!!! (3 replies)
- '00 400ex (2 replies)
- Decisions, Decisions (20 replies)
- 38mm a/s carb (4 replies)
- Con rod question. (1 replies)
- 400ex carb question (6 replies)
- major problems (2 replies)
- brake line pressure??? (10 replies)
- quick fly wheel question?? (1 replies)
- 250ex exhaust problem (8 replies)
- R not getting a spark (6 replies)
- Leakey carb (20 replies)
- Have you ever heard of this? (5 replies)
- Weird noise after rebuild (15 replies)
- Best 250X full Exhaust System?? (4 replies)
- Carrillo or IMS? (19 replies)
- when to rejet? (1 replies)
- If you are running a YZ 426 motor (1 replies)
- 2002 400ex problem (18 replies)
- Problem (3 replies)
- 250X Oil Cooler? (3 replies)
- 440 to what? (0 replies)
- 400ex jetting (3 replies)
- help plz (2 replies)
- K&N Air filter (12 replies)
- Best Trail Riding Gear Ratio (8 replies)
- gusset (1 replies)
- Motor noise (4 replies)
- can anyone recemend a quick twist throttle for a 400? (3 replies)
- ?what psi on 440 wisco 11.1 pis (2 replies)
- pro curcuit or hmf (13 replies)
- 400ex FULL EXHAUST???WHAT TO GET?? (22 replies)
- 300ex mods and valve adjustment (1 replies)
- White brothers (22 replies)
- Quad Not Running for a Month (23 replies)
- winter to summer (3 replies)
- Blown Head Gasket on 440 EX (34 replies)
- best cheap mod??? (14 replies)
- exhaust choices? (6 replies)
- Supertrapp IDS2 9 month review (2 replies)
- 416 Vs 426 (15 replies)
- starter button wires (3 replies)
- i have problem (17 replies)
- Individual Jets? (27 replies)
- 400ex gearing (5 replies)
- hetrick 310 cam (0 replies)
- Tc Cam Question? (2 replies)
- need cr450 motor? (0 replies)
- All Right...i Think I Might Be Gettin Rid Of My R And Gettin A 400...what Big Bor Kit (2 replies)
- they say 250x's are faster?? (9 replies)
- battery charging (3 replies)
- This normal? (7 replies)
- the best sprocket for a drag (12 replies)
- rod bearing ? (3 replies)
- any suggestions on which pipe? (2 replies)
- A mechanic looked at my motor (14 replies)
- opinion (2 replies)
- Valve Springs (compressing) (3 replies)
- High Compression Piston kit, where to buy?? (9 replies)
- What jets do I need for 39 FCR and 440? (1 replies)
- Im gettin a niks 350! (3 replies)
- Pro-circuit Exhaust Jetting (2 replies)
- sprocket ? (4 replies)
- Port and Polish pics!! (13 replies)
- Pro-circuit T-4 (7 replies)
- Hurry Hurry Hurry!!! (0 replies)
- New Cam?? (2 replies)
- Leaded c12 and unleade 93 mix?? (5 replies)
- Is blaster a good Beginner quad? (23 replies)
- E-Series full exhuast? (7 replies)
- rejet with diferent filters? (1 replies)
- How long? (5 replies)
- custom oil cooler (3 replies)
- Cdi (5 replies)
- headpipe install (4 replies)
- Clarke 5.5 gastank w/ FCR39 (0 replies)
- help (0 replies)
- 250r's (18 replies)
- rev box mod (0 replies)
- Dial a jet (2 replies)
- witch one and how much (1 replies)
- white bros header pipe (3 replies)
- Price list of parts to build a 426.... (8 replies)
- How to Change Jets in a 250EX (0 replies)
- Tony Kellner Motorsports (2 replies)
- best 400ex pipe (3 replies)
- Valve Cover (5 replies)
- pipes........ (0 replies)
- some questions (5 replies)
- Leaded or Unleaded??? (8 replies)
- Dynojet (4 replies)
- what exaust do you recomend? (10 replies)
- Finally got my carb back! (7 replies)
- 500ex Info. (4 replies)
- Time to turbo (22 replies)
- how much faster... (4 replies)
- Big Question! ! ! (5 replies)
- amp link???good or bad (8 replies)
- E-Series VS T-4 (13 replies)
- question on my jetting for 300ex (5 replies)
- Yoshimura Exhaust (2 replies)
- rtc levers (6 replies)
- New cam for the woods... (16 replies)
- Do i need to change. (0 replies)
- 2 cylinder (2 replies)
- Help with Idle control cable???? (0 replies)
- Is this the best performance part? (5 replies)
- Modify my 400ex or sell it for a Banshee?? (30 replies)
- 416 0r 440? (12 replies)
- 250x Clutch Kit? (2 replies)
- FCR cable (1 replies)
- 440 questions (39 replies)
- What to Do??? (3 replies)
- HELP!!! I dont know whats wrong (4 replies)
- To hard of a choice!! Sparks, LRD, CT (29 replies)
- k&n powerkit? (4 replies)