- mixture screw
- clutch torq
- wont start
- -------------carburation--------------
- sparks
- dyno jet kit
- 416 or 426
- FCR - 185 Main and Still Too Lean- WTF?
- cam
- oil level
- timing chain tensioner
- 250x wiring PLEASE HELP
- freakin 300ex
- Can anyone post pics of there engine rebuild??
- Cam Chain
- High Flow Aluminum Airbox
- Chain adjustement!
- Another 400EX jetting problem =-)
- Attention Sparks Exhaust Owners
- stock volume of a 400ex(?)
- warm engine tick
- valve spring compressor
- dual exhuast
- Engine Problems ?
- 300ex bore
- PIPes
- 165 main and still popping what should i do?
- feul to air and main jet?
- sparks x6 problems
- 416 problem
- cracked stock header
- Blueing on pipe....
- Carb leaking lots of gas in on Pos.
- Aftermarket 400ex Needle
- New 400EX Mods
- Mismatching headers and silencers?
- good pipes for 250ex
- Z400 with HMF jetting
- Rejetting 300ex tonight...need help please?
- What oil should I use? 1st oil change after rebuild...
- Revving Very High When low on gas, Couldn't Kill the Engine!!!!
- ProFab 385 kit
- what size rear sprocket??
- Need help
- DG xcellerator
- 300ex needle position
- electric start problem
- 250X with KTM motor on EBAY!
- 400ex Jetting Please Help!
- Where did everyone get their FCR 39 &41 Carbs From???
- Need QUICK Help!!
- oppinions on edelbrock quick silver carbs
- Is it supposed to start in gear?
- 400EX degree keys?
- timing chain guide?
- 250r leaking coolant
- Twist Throttle installation..is something wrong??
- LT Clutch Help?
- hey guys i gotta ? about piston compressions
- Slip on
- 427 wont start
- my 400 wont start
- wb e2
- installing 14t front sprocket, do i HAVE to change rear and chain?
- changing valve springs for a cdi box??
- Jetting lol
- Jetting For Wb E Series
- Carb Leaking
- Is it my battery or charging system?
- Help
- Shortening an HMF exhaust
- 400ex valve problem
- piston diameter
- sprocket for a 440
- 400ex help
- 87 honda 250x
- Does polishing the exhaust ports benefit a 400 much???
- will this work ????
- am i just stupid or what?
- Herrmann Racing Carrier
- Jetting shortcuts?
- 400ex Sproket and tyre selsction
- lectron carb. Help
- WB Filter?
- lt250r problems
- Stock 250ex running very rich?
- High flow air filter other than K&N?
- Oil Leak
- stiff throttle
- Need Help!!!!!!
- Sputtering R
- 2004 carb
- need help. yamaha warrior carb
- Stock exhaust on big bore
- pistons
- pro flow kit
- Srarks Timing Key
- Exhaust for my 300EX
- exhaust
- ehaust
- Exhaust Question
- 300ex bogging/stalling on uphills
- Port And Polish
- Kick Start 400ex
- 400ex engine questions
- some AIR questions???
- big bore kits
- 300ex jetting
- ??????? will it work ????????
- vibration?
- 400ex to 250x
- i need help...which motor is taller 426 or crf 450 ?
- exhaust
- How does Sparks X-6 compare to Big gun?
- power up package kit
- 14 tooth front
- 11:1 comp?
- 400 jetting???
- FCR Carb
- 87 250X Rejetting
- how can you tell how many disks?
- UH OH broke off an exhaust bolt
- Kickstart EX
- Why does high octane race fuel burn cooler?
- Sparkplug Gapping
- 400ex crankcase problem/question?
- Looney Tuned Exhaust or Sparks X6
- sunk the forman please help!!
- No wonder it was loud!!
- Quick Twin air Question
- water in steering stem???
- Man this is frustrating
- well the threads pulled out of the cylinder
- gearing link?
- big bore questions...help!!!
- hmf pipe
- av gas ratio?
- pipes
- White Brothers Rev-Kit
- what size jet
- Paul Turner Mid Range Pipe
- Fcr
- Heli-Coil Kit
- Sparks Key and Cam
- which exhaust
- MBRP slip-on Jetting ?
- PLease Help asap
- graydon proline exhaust
- Smoking EX
- axle carrier?
- Lonestar Racing contact?
- ok
- Dg Rcm
- holeshots
- AIr Filters
- moose (bulb) exhast
- Fdo Wtf
- 250x won't run!
- procircuit t4
- running like s**t
- Please give me some advice on how bad this really is.... Bolt broken in motor
- xr400 motor
- 250x exhaust
- hmf
- Jetting
- piston dilema
- what size sprockets?
- exhaust interchangeability
- yooshimeria pipe, jetting
- one more performance question before i order
- big bore?
- Gas
- 250r on pump gas
- 426 jetting?
- which pipe is better yosh or sparks
- K&N or UNI Air Filter????
- head gasket
- wut jets for my 250x
- Stupid question! loctite when rebuilding motor?
- baffle
- Need help ASAP on exhaust problem
- 400ex big bore kits
- First ride on my 400EX
- decompressor
- Oil??
- Jetting Survey for 40mm FCR Carb
- Pics of Tinners or OMF Air Scoops
- 400ex Kits
- maybe a 416 now....anyone with a 416 chime in please....how long since you've rebuilt
- 200x atc motor question
- 400EX, can it go fast?
- CRD Exhaust - anyone had any experience with them?
- 300ex head pipe?
- head gasket question
- new 416 cutting out
- What have you heard about a Muzzy?
- Pipe Question...
- Throttle hesitation question
- Axle Problems
- Motor????
- 300ex kick starter
- Engine Cases
- Water Wetter???
- automatic cam tensioner?
- kill switch hook up
- 300ex FST oil cooler pics
- What would Happen?
- Smoking a lot plz help!
- Help WB pipe
- am i suppose to put filter oil on outerwears?
- losing the faith in my engine!!
- quick help plz?
- Carb Problem?
- 250r shift shaft leakage???????? please help
- Dirt Bike Ignition problems PLEASE RESPOND
- FST Oil Cooler w/ pics
- 11:1 stockbore
- carb mod for 416ex
- Quick?
- white bros
- power kit
- hotcams stage 1 or 2
- Help
- 300EX with 350x engine?
- 440 kits??
- Ct Racing Exhaust
- T-4 or HMF for utility?
- where to get a good 426 kit
- 250r still leaking
- 400ex weight of engine?
- FDO studs
- YFZ450 valve clearance
- Pipe
- Which pipe should I choose?
- 1986 250r going back together with you help
- 66mph top speed GPS.
- Best tire for trails.
- How To Properly Break in a Trinity Motor?
- boring case?
- Piston color..... lean, rich, ????
- am i right
- Lean Issue - 205 Main and Still Lean - HELP!!!
- Gasket where slip-on meets header
- Engine Mods
- Water stalling motor
- engine stall when blipping the gas
- cheapest place to get hinson inner hub
- 300ex vs. 400ex
- dirty valve
- Chain and sprocket install.