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2005 Yamaha YFZ450 Engine

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Wiseco
Top End Kit
$256.89 - $319.39
$228.99 - $284.99
You save up to $34.40 (11%)
(18)
Wiseco Top End Kit Wiseco-forged high-silicon aluminum alloy pistons are computer-machined to exacting tolerances Designed for greater strength with reduced weight and improved heat transfer Piston k
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 raise c
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 Design
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 The
Wiseco
Cam Chain
$78.89
$71.09
You save $7.80 (10%)
(0)
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
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.
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 Cams
Maxima
ProFilter Oil Filter Cover
$29.95
$26.99
You save $2.96 (10%)
(6)
Maxima ProFilter Oil Filter Cover Features: Made from CNC-machined 6061 T-6 billit aluminum Includes a sub-suface anodized finish Lighweight and durable Increased flow Prec
Vertex Piston Kit Restore that crisp clean power that your dirtbike or quad use to have with a new Piston Kit from Vertex. Or step up the power with a high compression Piston Kit, All kits ar
Hot Rods
Crankshaft Assembly
$305.95 - $399.95
$290.99 - $379.99
You save up to $19.96 (5%)
(1)
Hot Rods Crankshaft Assembly All new assembly sold complete with Hot Rods connecting rod Factory assembled and trued to OEM specifications, Hot Rods cranks will meet or surpass the OEM in perform
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 in
Athena 450cc Cylinder Kit Bolt on kit, no machining required Aluminum cylinder with nickel-carbide coating designed with wider water jackets Complete piston kit, Forged piston wi
Athena 480cc Big Bore Cylinder Kit Bolt on kit, no machining required Aluminum cylinder with nickel-carbide coating designed with wider water jackets Complete piston kit, Forged p
Pro X Racing Parts Cam Chain Manufactured in Japan by Borg Warner Designed to O.E.M. specifications Strong M-Type chain which has special heat treated pins plus advanced pin and link connections for
Hot Rods
Connecting Rod
$159.95
$151.99
You save $7.96 (5%)
(0)
Hot Rods Connecting Rod Affordable premium quality replacement connecting rods Forged from 8620 AISI steel, hardness tested to insure strength and durability AISI carburized crankpi
Cylinder Works
Cylinder Kit
$559.95 - $579.95
$464.89 - $481.99
You save up to $97.96 (17%)
(0)
Cylinder Works Cylinder Kit Replace that tired, worn out, or blown up engine with a new Cylinder Works Cylinder Kit. Each kit contains all the necessary parts to get your ATV or Dirt Bike back on th
Mod Quad
Dipstick
$23.95 - $24.95
$22.99 - $23.99
You save up to $0.96 (4%)
(0)
Mod Quad DipstickMade from 6061 Aluminum and polished complete with O-Ring **Closeouts are limited to stock on hand**

Latest Reviews

Ed (Methuen, MA)

Fit
Quality
Installation
Recommend

Wisconsin top end kits kx65 kx 85

New Wisco top end kits for KX65 and KX85. The fit was great and had no problems at all- the bikes have been running good. My only recommendation is that you have to let the bikes warm up before you wind them out. You might get a little piston slap or nock.

Sean (Los Angeles, CA)

Fit
Quality
Installation
Recommend

Replaced the top end on my 96 cr125r! Fit great perform well but the price is the problem. For 70-80 bucks they'd be perfect!

simon (berkshire, BRK)

Fit
Quality
Installation
Recommend

lully job

Ordered my wiseco bottom end kit and everything fell together. Fired up second kick, now first time everytime! I will run it very gently, because that is absolute key in a good engine as some do thrash and wonder why the cranks snapped or flattened bearings!!

Alejandro (brooklyn, NY)

Fit
Quality
Installation
Recommend

CLEAN finish

Just tops off any bike to become better. I love it!!

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