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- e-series question
- Sparks 450r pipe
- Gear shifter spindle broken...ouch!
- This isn't supposed to happen!!!!
- 400ex
- main jet
- carb help 400ex
- big bore kit for a 300ex
- 300ex exhaust
- Mikuni tm34mm carb on 300ex!
- Boring out a stock 400ex carb
- Chain help
- milling the head on a 400ex?
- 400ex, how to start in gear?
- Installing new clutch
- rejet
- FCR trouble again
- carb help PLEASE
- k&n filter problems
- Cam for stroker
- Gasket ?
- Pistons
- Why would one replace spark-plug, gaskets, pistons, orings, exhaust on a 03' 400ex??
- 440 kits
- edelbrock carb 440 IS IT WORTH IT
- 400ex problems
- CT Racing Slip-on problem
- Jetting prob
- getting it to start
- bar clamp ?
- stock axle to lsr axle
- 68.4 mph good, bad, or average
- New Here... 400ex won't start... couple ??
- tick tick noise
- outerwears?
- FCR worth the switch.
- burning oil
- piston
- Little cheap mods do make a difference
- question about z400 jetting
- Dial-a-jet
- Needle???
- can i put a 300ex jug on my 250x
- Wiseco 440 Big Bore Jetting
- 400ex Auxillary Oil Cooler Installation
- 300ex
- rev box
- 4 stroke tech advice
- comparison
- 300ex vs. warrior
- What exhaust do I have?
- 300ex pipe sound
- which is quieter???
- 300Ex Question ( Happy Day! )
- HMF full exhaust
- problem
- motor upgrade
- 400ex motor in 300ex frame??
- removing engine help
- crf450 motor ?
- I need help! Anyone that's really good with carbs please lend an idea!
- Quad specs
- R4 White Brothers
- Lectron Carbs- Metering Rods?
- Traded in my 250ex, kind of miss it.
- Cheapest place to get WB E-Series W/free shipping
- exhaust
- rear axle bent
- adjusting valves
- cometic gaskets?
- Little Smoking
- porting
- 350x questions
- Wiseco vs. JE vs. Ross
- rear brake caliper question
- where to buy motor
- TRX300ex power infusion!
- 300ex killswitch
- raceing
- 250EX Manual Clutch
- head bolts
- Big Gun Quiet Series any good?
- 300ex problem
- race gas?
- oil leak...i cant figure it out
- whose running the TC 924?
- results of hotcam?
- Keihein FCR37mm?
- OHH $H!T messed up bad
- overflow always leaking
- Changing Jets???
- Another Durablue eats it
- 400ex Hrc Cam
- more power?
- 400ex Cam Chain Question??
- Axle bent or not?
- Post pics of your Shorty Pipes
- rear sprocket replacement
- problem with repacking YOSHI
- 416 help quick please!!!
- adjustable ignition vs normal rev box
- 400EX motor problems
- Why do the fuses keep blowing?
- curtis sparks
- jetting
- more power
- Compression
- big bore vibes
- 416 kit???
- Sticky Throttle Cured!
- TC 426MXer Hp's?
- flywheel
- Oil
- e-brake block off?
- 400EX cam chain question - noisy after rebuild
- 400ex big bore!
- carb mod for crf450??
- curtis sparks
- Clutch Re-installation question
- Best Engine Builder
- Approx. HP of my ex
- big gun exhaust questions
- 14 tooth sprocket 300ex??
- degree key/timing key???
- curtis sparks-vs-ct racing exhaust
- when climbing it smokes
- Motor upgrade?
- 400ex trade in
- 250x head problems
- twist throttle?
- ??
- Building a 440
- Where could you get CRF450 motors?
- wont start clicking noise
- jetting
- 416, cam, pipe, filer, no lid... jetting.
- Where can I find a good axle
- 300ex ignition wire
- 300ex FMF on 400ex?
- what are the best tires?
- Need help jetting
- help jetting 400carb on 250x!
- anybody tried the DNYA CDI for 400EX?
- ticking
- honda axles
- jetting suggestions 300ex w/mods
- 300ex problems
- Dynojets
- chain tension?
- 300ex backfires
- Tether install, Polaris
- cam and piston?
- New to me 400ex is leaking fuel
- White Bros e exhaust
- YFZ jetting
- Better Battery???
- 440ex compression
- 400ex backfire, missing???? HELP!!
- stage 1 stage 2
- 300ex Exhaust needed
- Failed Dynatek cdi
- Big Bore 300ex
- 400ex motor swap...besides CRF450...
- 400ex hp?
- 400ex start up
- Who sell those things???
- 250r vrs. 400ex
- which piston is best 4 racing mx??
- Cracked Intake boot
- How do i put this tether kill switch on my 400ex?
- klotz gas????
- how do i put this tether kill switch on my 400ex?
- Just ordered HMF, good choice?
- 8 Plate Clutch Issue - HELP!
- Yet another jetting question
- 426 fcr jetting?
- Whats the best pipe?
- Frustration!!!!!!!!!!!!!!!!!!!!!!
- Big Gun or White Bros.?
- 416 or 440 for mx racing
- stock gearing???
- Race Gas !!!
- Axel carriers ?
- Tether switch question for 400ex and blaster
- Dg exhaust
- 300EX gearing question
- BEST Valve springs
- head pipe/ bill's pipes
- Chail oil
- Oil cooled 300ex
- Tc exhaust
- Needel jet?
- 250r powervalve in a 400EX??
- sprokets????
- 440, 426 boring and sleeving questions
- my 300ex transmission
- timing question
- My engine is KNocking!!
- dominator axle
- Starting in gear
- All balls or Pivot Works?
- adjustable cam chain gear ???????????????
- Rad bearing carrier
- ct racing
- 450r vibes!!!!!!
- cometic gaskets
- Spline wear on front sprocket shaft
- got it
- Mickey Dunlap ??????
- engine breakin
- Just installed...
- What size paddle?
- 300ex-350x conversion...
- TC 450 kit
- drain plug
- Head Gasket
- gettin a HMF slipon
- New pics of lte dual exhaust for 400ex.
- 18in
- Need a little jetting help....
- what is a good wey to shift win i am racing
- CDI / Rev Boxes for the 400EX
- 300ex Won't Start
- XC gearing?
- Timing advance humming.
- 400ex Floats?
- pipe for 300?
- head gasket AGAIN (im about to kick this thing...)
- Jetting Question???
- Piped 400ex Vs. stock Z
- 250r Cdi
- How to remove a sheared header stud
- overheating
- 431 kit
- Aftermarket CDI/Rev limiter?
- Best xr600 perf. parts???
- CDI REV Boxes
- HMF Slip-On for a 400ex?
- Need REV. Limiter
- Stock CDI Boxes
- A real 600??
- drag racing set up
- why is the 416 kit better than the 426?
- coating the cylinder after a re-bore.
- Buying Stock Motor...?
- what performence parts should i buy
- my motor is making some crazy *** noises
- Jetting questions???
- 300ex problems please help?
- exhaust wont come off!!!!!!
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