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- Radiator Leak?
- 350X oil cooler on 300EX
- names
- pipes?do they help?
- Octane Q
- What does the FCR carb come with?
- LRD pipe and FMF
- New Rules for National MX Racing
- Modded stock exhaust
- Oil Change?
- Companies to bore
- Modified Carb
- best exaust for 400ex???
- jetting question
- Engine combo price??
- Need clutch help
- Hard Start
- xr400 or gtthunder cam?
- Quick Valve Q
- xr250 cdi box?
- 87' yamaha "pig hair"- carb ?
- Hello and a question about re-jetting
- Is Changing Clutch Plates Hard?
- Hey jet Question where can I buy them PLEASE HELP
- Max size increase?
- tether kill switch problems...
- How does this Sound????
- Help!! 300ex not running!
- Rejetting with open airbox.
- 250r Keihin carburator on 400ex
- new top end vs crank bearing
- Supertrapp Ids2
- spark plug boot
- final mod do u guys rec this
- lectron carb
- fcr or the edelbrock quicksilver carb
- Honda problem
- Sprockets
- 400 EX manuals
- Dome Top Air Box & Block Off Plug
- Aftermarket cam owners!
- What to do next
- jetting stock 400ex carb
- Which pipe 2 get???
- More Horsepower??
- 4 stroke Reeds?????????????
- Piston ??'s
- 406ex
- Rasing the needle?
- what is the best pipe for my friends 250x?
- What Would Happen???
- Please help! What jet?
- 305 cc kit?
- motor work
- Time to mod my 300EX,what to get?
- 400ex stalls
- Hey Leo
- plug fouling with new pipe on 400ex:confused:
- is a 300EX Chain a 520 or 530?
- Timing chain
- 2 Questions in 1 post (airbox & exhaust)
- hp ? 330 kit, 11-1 .080 piston
- Anybody Ported and Polished their quad?
- 14 T
- Void warranty
- best pipe for a 300ex ?
- XR 400 cam
- kick starter
- oil filter cover bolt
- Clutch replacement on 01 400EX
- I need some last input on this cam subject!!
- Question (440EX)
- New guy
- Which Cam for 300EX?
- Raptor Race
- spark plugg coming loose
- what mods for less ca$h?
- engine sputtering problems?
- After Market Air Box ?
- Best 300ex Exaust?
- 440 or 416?
- Yoshimura bolt on
- Do I need a jet kit?
- Oil drained on rebuild
- 300ex piston
- Clutch spring bolt torque?
- Jetting w/ K&N & Supertrapp IDS2
- 416EX kit?
- fcr
- hydraulic clutch install! HELP!
- curtis sparks carb mod for 400ex
- 300ex pipe install question
- Someone know the Compression(psi) of a stock 400ex
- Shop problems, HELP! !
- 420ex wooohoooooo
- HELP!!! 400ex wont start or run!
- K&N v/s Uni v/s stock
- Ex Question
- Do i have to play with air/fuel mixture screw if i put a 42 pilot jet on????
- Time to upgrade
- stiff throttle
- opinions on 14 tooth sprockets
- Hard Rockers Arms
- Where to find main jets
- What pipes do you have? And what would you recomend for me?
- je piston packages
- What should I do next
- Any one have DMC pipe or the System?
- Does the K&N Jet Kit have what I need? PLEASE read
- What do you think of the Mega Maxx II Pipe on a 300EX?
- Engine's gonna be opened up
- DOODS, I did something stupid!!
- uh oh
- noise
- need immediate help with right case cover on 400ex
- the question asked a thousand times
- Quad wont start
- A few mods. for the fun of it........
- T4 problems
- 400EX Pipe???
- Which Pipe???
- my white brothers pipe mods.
- This Is Funny
- Pingry Oil Tank
- Why oh Why?
- What mods....
- e-series or fmf??
- what is the best cleaner to get stains off the moter that got caked on??? help
- What are Uni Air Vents?
- rev kit ?????
- +1500 rev kit??
- Here we go!
- Cheap motor mods for my R???
- 300ex tach
- starter not working just clicking
- HRC cam?
- Big Gun Exhaust?
- Faster Bike, Help?
- Torque wrench?
- Used FCR
- Snorkle????
- How to make a 300ex eat a warrior..
- Q series FMF
- 300ex motor work
- decelarating popping
- Exhaust for my 250ex...
- Running lean?
- e-series pipe CAN ANYBODY HELP!?
- Advanced timing key
- 440 kit = more matnince?????
- 300EX will not start!!!
- EBC clutch?
- valves
- 440 kits? how did you go about it?
- Advanced Timing Key
- opinions/suggestions please
- Graydon Proline Exhaust???
- 440 Question
- Carb
- Question about 300ex jetting Very important!! Please Help!!!
- e-series jetting?
- Popping out of gear?
- Camshaft bearing, need help!
- white bros. and power bomb
- i need help like today
- 87 250x in too deep
- Stock Carb and Jets?
- It's starting, hehe
- powerbomb header
- airbox mods
- 250R oil drip from exhaust flange
- Installing jets
- help me adjust my valves- NOW!!!
- xr400 cam install
- Spark plug wrench size for 400ex
- Oil Leak
- curtis sparks timing key
- What pipe should i get
- 400ex smoking when i push throttle
- Help with new Perch and Lever
- HRC Piston Installed!!
- FMF Power Core IV Q, How quiet is it?
- Help!!!!! Backfire And Drip
- You guys were right--THrottle Adjustment
- Adjust Throttle Cable
- recon
- 416ex crankshaft problem????
- Decisions Decisions(did i spell that wrong)
- Twist Throttle Intallation
- No juice when key is turned on...
- what jet should I use with Yoshimura Race pipe?
- Drop in cam for 300ex
- how reliable \\\\\\?
- piston
- big gun complete?
- Puzzled
- to much air
- Aftermarket silencer too long?
- what to do.......
- Leaking Carb
- wow I got a great deal.....
- 400ex transmission problems ??????
- Carborator Question
- Plugging air box Holes for mud runs
- Jet size for my mods?
- Seem like a good price?
- spark plug question
- Cam question
- idea for increased air????
- D & D racing
- Compression Test
- 250ex pipe decsision
- Jetting and reading plug- help
- niks prox piston
- exhaust temps
- Geez another problem
- Valve Spring Compressor
- XR400 cam benefits
- 250ex pipes! help!
- 416 vs. Stock Piston
- 416 kit
- How excactly do you check your jetting?
- re-jetting
- WB Rev Limiter, Wow!
- Pro-Circuit T4 power ?
- header pipe question
- anyone please...300ex spark arrester.....need to know
- Carb???
- Whats the best piston to run.
- compression test results?
- Best place to buy 11:1 piston w/ XR cam
- speakin of WB CDI's
- 330 jetting?
- Power loss
- FMF ignitions
- Place In Ohio For Machine Work/installation Of 440 Big Bor And Cam
- New "Fat Boy 4" exhaust from Duncan Racing
- What do you guys think of octain boosers?
- TC`s Cross Country Engine
- installation of 14 tooth fr sprocket
- The TRUTH about WB Rev Box!
- Anyone Know anything about re-packing WB R-4???
- DG foward mounted oil tank
- fmf titanium4
- Question on repacking pipes
- foot pounds
- Air Filter
- 400ex oil cooler - Bigger Please
- Cr Perch
- whic jet kit is best?? K&N, dynojet, other??
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