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1999 Yamaha WR400F Engine

1999 Yamaha WR400F
Tire Size:
Front: 80/100-21, Rear: 110/100-18
Spark Plug:
Stock Chain/Belt:
Stock Gearing:
Front: 14T, Rear: 50T
Oil Filter:
Select Your Ride: Go

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Pro Lite Piston Kit
$64.00 - $194.99
You save up to $45.96 (19%)
Wiseco Pro Lite Piston Kit Available for both two stroke and four stroke bikes, the Wiseco Pro Lite Piston Kit is both a great OEM alternative and an easy way to boost the power. Choose stock bore ...
Moose Racing Top End Gasket Kit Performance sets designed for a piston replacement Top-end gasket sets include high-performance head, base, intake and exhaust gaskets Cost-effective way to rais...
Hot Cams
Valve Shim Kit
$47.96 - $71.96
You save up to $17.99 (20%)
Hot Cams Valve Shim Kit Sick of taking your bike to an expensive mechanic to have them shim your valves just because you don't have the correct shims to do it yourself? Here is the answer, Hot Ca...
Hot Cams
Stage 1 Cam
$161.96 - $242.96
You save up to $26.99 (9%)
Hot Cams Stage 1 Cam Extract maximum performance from your engine Hot Cams provide increased intake and exhaust duration for improved breathability and more horsepower Provides significantly more ...
Athena Complete Gasket Kit Manufactured in "State-of-the-Art" computer controlled facilities All gaskets made from the highest quality materials All gasket sets meet or exceed OEM specifications T...
Moose Racing Complete Gasket Set All gaskets needed for engine rebuild are included in each set with the exception of oil seals Unmatched reliability and performance from high-tech materials Des...
Moose Racing Magnetic Oil Filter CoverMagnetic Oil Filter Cover by Moose Racing Add more than a factory look to your 4-stroke Sturdy CNC'd billet oil filter cover; anodized bright red Ultra powerfu...
Cam Chain
$38.96 - $75.99
You save up to $10.96 (12%)
  • Black
Wiseco Cam Chain Made from premium materials to reduce friction and increase service life “M” style chain gives you maximum strength and durability Wiseco’s in-house en...
Works Connection Oil Filler Plug 6061 T-6 Aluminum with an anodized finish and O-ring seal Adds nice factory look Made in the USA **Note: Honda CRF450R models must order one for crankcase and one...
Moose Racing Countershaft Seal Kit Kit includes hardened steel bushing, an upgraded seal, an O-ring (where applicable) and a snap ring or lock washer (where applicable) Made in the U.S.A.
Top End Gasket Kit
You save $2.66 (9%)
Cometic Top End Gasket Kit Cometic Hi-Performance Non-Asbestos Gasket Kits are made from the highest quality, non-asbestos gasket material available Cometic Manifold and Base Gaskets are made...
Works Connection Engine Plug 6061 T-6 Aluminum with an anodized finish and O-ring seal Machined from billet aluminum, these new plugs are guaranteed to add a "Factory" look to your bike Available i...
Stainless Steel Engine Valves
$9.71 - $51.71
You save up to $17.24 (25%)
Wiseco Stainless Steel Engine Valves Stainless steel valves are manufactured to exacting tolerances from the highest grade material Forged one piece valves for unmatched strength CVD/CNI coate...
Hammerhead Designs, Inc.
Oil Filler Plug
$22.46 - $53.96
You save up to $5.99 (9%)
  • Blue
  • Black
  • Red
  • Gold
Hammerhead Designs Oil Filler Plug6061 T-6 Machined Billet Aluminum with an anodized finish and O-ring seal Laser etched Logo adds a nice factory look All models are plug only (No Dipstick) unles...
Pro X Racing Parts Engine Valve ProX also offers a complete line of steel valves. The ProX steel valves are manufactured of premium grade steel to exact OEM specifications and tolerances. The ProX ...
Factory Effex
Engine Plug Kit
$42.50 - $56.99
You save up to $17.96 (23%)
  • Blue
Factory Effex Engine Plug Kit Blended 6061 Aluminum Precision CNC machined fit and finish Type 3 anodizing finish Laser engraved graphics

Latest Reviews

mason (bowling green )


fucked up peice of shit

i had the wiesco bottom end in my bike 2000cr125 and it locked up and broke a rod worst crank, i wouldnt go with hotrod either it does the same. each weight on the crank is 30 thousandths bigger on each side then oem crank and it could possibly grind so ive been told. i would not recommend this crank. i hoped this helped out

Jonathon (Anaslime )


Very Nice Drain Plug

It was a little hard to start it going in the right angle because the magnet kept moving it out of alignment. I had to put a socket on it to keep it straight while threading it in! 14 mm wrench versus the original 17 mm size to tighten it down. The smaller size does allow me to use a close end wrench vs the larger original size I could only use a Socket wrench. The gasket / washer is not the copper type it is stainless steel, not like the picture .

Jay (Busselton )

Cost Benefit

Full engine gasket set

Good kit for my RM 250 1993 project/rebuild. The team at Motorcycle Superstore were extremely helpful!

Clayton (Syracuse )


hot rods complete bottom and rebuild kit

Rebuilt my 2007 kx85 with the hot rods complete bottom and rebuild kit, so far no problem whatsoever. Really satisfied with it.

grayson (edmonton )


works fine

Went in okay. One of the top o-rings was a pain in the ass, but it seemed to work out in the end. It recomended drilling a hole, but my old piston didn't have one, so I didn't feel like drilling my brand new piston.

randy j. (sand lake )


flywheel weight

Works great- just right for the YZ250 for woods riding.

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