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- Advanced Timing!
- bog in the air
- 400ex cold engine rattle/ticking
- t-4 for 250ex
- circlip fell into crankcase!!!!
- 300ex to350x ari boot??help
- what else?
- Um Air Box
- adjusting valve question...
- What's mu ney "cc" of my engine
- Stroked motor?
- which exhaust??
- 04 400ex carb. (38mm)
- compression
- Switch to Synthetic or not to switch
- when is your chain TOO loose?
- Which ones???
- cant get clutch adjusted right...
- Front end problem
- fatboy4
- how can i make my400ex faster?
- crf450r carb in a 400ex
- 416 mx motor
- 2001 250ex carb drain tube
- Who has a HMF pipe?
- I need help !!
- shortining silencer?
- Best Exaust For a 250R
- Advanced timing key?
- Clutch Shifter Pin
- head bolt
- Aluminum air box????
- Help with what to get for power
- LRD or E Series for 400 EX?
- bearings
- Melted pistons= bad news
- Gearing XC
- Radiator Question
- Yamaha Will Always Rule
- 250ex manual clutch kit
- What Do You Guys Think?
- Exhaust System on 400EX
- i need a 92mm piston 11-13 to 1 4 a 400ex
- Advance timing key?
- need advice on exhaust
- LRD, Pro-Curcuit, or Bug Gun?
- jb weld?
- 440 kits
- help 416 buildup
- Head bolt tourqe specs?
- 39 FCR carb question ???????????????
- Titanium 4
- 300ex sounds and feels abnormal
- anyone using the doug eichner 38 mm carb on a 440 ex?
- Aftermarket cam, rocker arms???
- 300ex cam=250x cam?
- damage to motor
- stroker pipe
- I need the calculation to figure out cc's
- stock needle number??
- ? about HEAD WORK?
- Wiseco Or Je
- K&N Air Filter + Dyno Jet Kit
- HMF Website??
- rev box???
- just cut the stock pipe down a bit.
- Timing questions.....
- which motor
- Installing Head Stud ?'s
- What pipe should i run with this engine kit???
- hmf jetting help
- need help finding an old thread...
- flipped wheels?
- need a little more
- Will this engine ever be in a quad?
- ticking
- FCR stuck Throttle?
- new chain with a new 14 sprocket
- TC exhaust?
- New clutch lever???????????
- Changing gearing for bigger tires
- Mixture screw question
- Rear Brake Rotor options ??
- 300ex exhaust?
- 1 word answer: DPR8Z same gap as DPR9Z?
- 300ex question?
- does rich mean...
- twist throttle
- Going to 22" rear tires, what gearing to offset
- how to figure hp
- Check out my new oil tank with vents!
- CRF450 ---> 400ex
- Sparks Timing Advance Key
- info you all might enjoy...
- knocking noise?
- 200x motor problems again.....
- Pro-Fab 330 Kit
- 400ex *Gear Ratios*
- Flywheel
- the boys xr 70 troubles
- pipe for 250ex
- 1987 xr250r dirt bike compaired to 250ex
- washer under needle clip??
- how do i repack my dg krome power silencer
- e-series
- 400ex blew smoke?????
- FMF Jetting?
- which cam
- cutdown supertrapp
- Clutch?
- Help! Pappy? Anyone else?
- 300ex problem
- QA and XR 50 carbs
- Blown HEAD gaskets
- Slip on pipe vs. Full exhaust system
- Motor Work
- overflow of my carb
- I blew out my crank BEARINGS!!!!!!
- will a 330 big bore and a cam do alot to a 300ex
- 300ex rockers
- hmf
- What's wrong with my 300ex?
- reeds
- Clutch Rubbing
- Carb and jet
- 425 owners post here
- pro curcuit t4
- clutch lifter pin
- wont run in high rpms???
- best type of sprokets and chain
- Engine Vibration
- Knocking noise while turning sharp at slow speed
- Jets!!! So Many Wich One???
- Bills pipe
- 250x decompression problems
- Head gasket and stud dilema...(long)
- my chain and sprockets
- best yfz pipe
- how do you all run?
- stock Carb question
- results from my cam/piston
- can you get a different size needle from keihin??
- Rear axle carrier
- 400ex cylinder problems HELP
- Big Gun pipe combo
- Sparks gasket of Cometic Flexsteel?
- Anyone use this gearing?
- My Spark Arrestor
- Where can i get a good/cheap dome, piston,sleeve.....?
- I have a few questions about a spacer plate on a 330, to make it a 350.
- 14t front sprocket
- Whats the best pipe and silencer for a 250r?
- Need a picture...
- Anyone a metal fabricator/machinist here?
- DG Xcelerator exhaust?
- just put in new hotcams stage 1
- pics
- what is the loudest pipe for the 400EX?
- Rebuilding engine
- setting timing
- What is the quietest performance pipe for 400EX?
- Advence ignition, good or trouble?????
- Cutting a Yoshi Exhaust...
- Quick ??? loose rear hubs!!!
- Where to get rings for a Ross piston?
- high comp piston
- 400ex jetting prolems. NEED HELP!!
- How Many links are on a 400ex chain?
- Best Filter
- Exhaust ?
- recomendation on jetting for cam and piston
- Removing the paint on my cases and Cylinder...
- To grind or not to grind
- HELP HELP HELP! Problem with ESP Shift Program Honda Rancher........
- Simple Silencer Survey
- xr400 cam
- CRF 450 engine in 400 ex
- 400ex bog
- What kind of performance gains?
- jetting question for these mods
- 300ex clutch?
- Trail Tech
- Banshee is leaking anti-freeze outa top of head...
- funny ticking noise
- TC cam settings
- what gains do you think ill get?
- 250r stroker question
- Chain Removal and Gearing lessons
- Why the x-6?
- choke removal jetting
- K&N [jet kit ] quistion "main jet"???
- Pipe:Sprocket ?
- 440 cylinder to stock cylinder
- Fiber is good for you??
- dial a jet
- je piston ?
- Hmf / T-4 / E-series
- Pipes for crf150
- 300ex motor work and pipe?
- help w/ 330ex kit.
- 400ex is pissing me off....help
- someone figure out my carb!!!
- spit and sputter!!
- can anyone help my friend out ???
- powerbomb and bills thunder?
- 416 with stage1 hotcams jetting
- 3 angle valve job on a 416
- Pics of what happend.....
- Cheapest place to purchase LRD Pro 4?
- To stroke or not?
- Something electrical
- 250R kicker skips
- Yet Another Jetting + Carb Question
- Big bore vs stroker ?
- wrong forum for this
- 86 links in a 300ex chain?
- 250r engine..someone please answer
- HRC parts
- 400EX Motor Problems
- Tri-metal xr 400 gasket?
- 440 Base gasket Oring question
- why am i running lean?
- Slipper clutch for 400ex
- ProfabATV, anyone know anything about em?
- 300 head work?
- jagg oil cooler
- Duncan Fat boy exhaust
- gear ratios?
- Fuel Filters
- do 400's usually run hot
- what card does a 400ex have
- hotcam STAGE 1 OR STAGE 2
- 15w-50 in the winter?
- procircuit t-4
- air filters
- Electrical problem, a real stumper
- Silencer
- Shaved flywheel
- fcr
- head gasket replacement
- Front Sprocket question
- replacing water pump seal need help!!!!!!!!!
- looking for: outerwears air box filter??
- how to take of reverse rev limiter
- 250r engine in 400ex chasis
- port job
- best 300ex pipe?
- 300ex motor work
- Arias piston
- Best Exhaust system for 400ex?
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