1. Dirt Bike
    2. Parts
    3. Engine

    2004 Honda CRF450R Engine

    2004 Honda CRF450R
    Tire Size:
    Front: 80/100-21, Rear: 110/90-19
    Spark Plug:
    IFR8H-11
    Stock Chain/Belt:
    520x114
    Stock Gearing:
    Front: 13T, Rear: 48T
    Oil Filter:
    KN-116
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    Wiseco
    Pro Lite Piston Kit
    $189.99 - $221.99
    $170.99 - $199.80
    You save up to $22.20 (10%)
    (12)
    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 siz
    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
    Wrench Rabbit
    Complete Rebuild Kit In A Box
    $809.95
    $769.99
    You save $39.96 (5%)
    (0)
    Wrench Rabbit Complete Rebuild Kit In A Box Wrench Rabbit isn't lying, this kit does come in a box and contains everything you need to get your dirt bike running again. Two stroke or four stroke, this
    Hot Rods
    Complete Bottom End Rebuild Kit
    $529.95 - $579.95
    $450.46 - $492.96
    You save up to $86.99 (15%)
    (4)
    Hot Rods Complete Bottom End Rebuild Kit A life saver when things go south for your engine, the Hot Rods Complete Bottom End Rebuild Kit features all the parts you need to get back on the track. Addit
    Wiseco
    Complete Bottom End Rebuild Kit
    $354.95
    $319.49
    You save $35.46 (10%)
    (11)
    Wiseco Complete Bottom End Rebuild Kit Each kit contains everything you need to complete your rebuild the right way, the first time- crankshaft and connecting rod, all applicable bearings, and complet
    Hot Cams
    Valve Shim Kit
    $89.95
    $71.96
    You save $17.99 (20%)
    (5)
    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
    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
    Wiseco
    4C Race Series Piston Kit
    $281.99
    $250.99
    You save $31.00 (11%)
    (0)
    Wiseco 4C Race Series Piston Kit Whether you are a serious racer or just serious about how your engine preforms a Wiseco 4C Race Series Piston Kit will get you the power and snap you want. Fo
    Moose Racing Replacement Cylinder Replace your damaged or worn out OEM cylinder Made from cast aluminum, nickel silicon carbide plated Precision machined and honed to OEM stock bore sizes Extremely d
    Hot Rods
    Connecting Rod
    $159.95
    $135.96
    You save $23.99 (15%)
    (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
    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
    $70.95
    $63.89
    You save $7.06 (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
    Hot Rods
    Main Bearing and Seal Kit
    $59.95
    $50.96
    You save $8.99 (15%)
    (0)
    Hot Rods Main Bearing and Seal KitPrecision, high-quality main bearing and seal kits complement Hot Rods crankshaft assemblies All kits contain two main bearings and two seals Work for rebuilding Hot
    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.
    Athena Race Gasket Kit For the true Racer. Racers depend on reliability, performance and of course affordability, that's exactly what you get in Athena's new Race Gasket Kits Kits include a multi-laye
    Maxima
    ProFilter Oil Filter Cover
    $29.95
    $25.76
    You save $4.19 (14%)
    (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
    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) unless n
    Hammerhead Designs Engine Plugs6061 T-6 aluminum with and anodized finish and o-ring seal Machined from billet aluminum , guaranteed to add a "factory" look to your bike Kit includes 2 plugs and o-r
    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 fo
    TMV Flywheel Weight Machined from 303 stainless steel that's 15% heavier than standard steel, allowing more mass in a smaller space No extra gaskets or leaking plastic spacers
    Pro Circuit
    Engine Plug Kit
    $89.95
    $78.26
    You save $11.69 (13%)
    (0)
    Pro Circuit Engine Plug Kit Contains the required number of ignition cover and oil filler plugs Machined from aircraft-grade aluminum Polished to a mirror finish, then anodized for a one-
    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 val
    Hot Rods
    Crankshaft Assembly
    $349.95 - $405.95
    $297.46 - $345.06
    You save up to $60.89 (15%)
    (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

    Latest Reviews

    Curtis (Chesapeake, VA)

    Fit
    Quality
    Installation
    Recommend

    Top end bearing

    Good OEM substitute. Used one on my last top end without issue.

    Curtis (Chesapeake , VA)

    Fit
    Quality
    Installation
    Recommend

    Gasket kit

    Good quality gasket set. Had everything I needed including multiple thickness base gaskets to properly set head space. Would buy again.

    Jim (Sheboygan, WI)

    Fit
    Quality
    Installation
    Recommend

    Shim Kit

    Glad I bought the kit, better than buying individual shims at the Honda shop. Fair price, quick delivery.

    Jake (Colchester, CT)

    Fit
    Quality
    Installation
    Recommend

    Was good...

    Fit great and was an easy installation but blew it first time I took it to the track.

    Davey (South Central, WI)

    Fit
    Quality
    Installation
    Recommend

    Great Deal

    2008 FZ1- Fit perfectly, no 'big glob of glue' on the end holding the magnet in. Nice black finish, we'll see if it holds up. Same exact length as stock. I'm actually kind of excited to see what it pulls out of the oil at the next interval. Cheap insurance, money well spent!

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