**03-05 Yamaha YZ450F 95mm Cylinder 13.5 CP Piston Wiseco Crank Engine Rebuild K

**03-05 Yamaha YZ450F 95mm Cylinder 13.5 CP Piston Wiseco Crank Engine Rebuild K

20001, M1011, WPC139, C3066, CBK0088, 4050, 193564111432, WB1069, B5000,K022, 808677, 822228, 20001, 4786M09500, 4785M09500 856D300 M1011, 4050, 808677, 5GR-17471-10-00, 90387-2513F-00, 90215-21001-00, 421-3067, 5TA-11181-00-00, 90430-06014-00, 5TA-11633-00-00, 93420-18082-00, 5TJ-11631-00-00, 5TA-11351-00-00, 5JG-11603-00-00, 822228, 811677, 5D3-13300-00-00, 5D3-15155-00-00, CR8EB, 871480, 1106-0146, M1011, K022, KN-141, CBK0088, TBK0067, 93306-20532-00, 93306-00426-00,80-81900, 80-80206, 80-80213H, 80-80215H, 80-80217H, 71014-5, 20001, 5TA-11311-00-00, 5TA-11311-12-00, 5TA-12111-00-00, 5TA-11631-00-00, 5TA-12112-00-00, 5TA-12121-00-00, 3GM-12126-00-00, 5TA-12113-00-00, 5TJ-11631-00-00, 5JG-11603-00-00, 5TA-11633-00-00, 93420-18082-00, 5TA-11351-00-00, 5TA-11193-00-00, 5TA-12114-00-00, 5BE-12117-00-00, 4GY-12117-00-00, 33M-12119-00-00, 4SV-12119-00-002003-2005 Yamaha YZ450F Motor Rebuild Kit – Complete Engine Overhaul with BPRATV Cylinder, CP Piston, Wiseco Crankshaft & Cometic Gaskets

Revive the heart of your 2003-2005 Yamaha YZ450F and dominate the track with the Ultimate Motor Rebuild Kit designed for champions. Crafted for precision, durability, and unbeatable performance, this comprehensive kit includes everything you need for a top-to-bottom engine overhaul, delivering factory-like reliability with race-winning power upgrades.

Fits Yamaha YZ450F Models – 2003, 2004, 2005 ONLY.

  • BPRATV 95mm Stock Bore Nikasil Plated Cylinder – Built for performance and backed by a 1-Year Warranty for worry-free reliability.
  • CP Carrillo 95mm 13.5:1 Forged Piston Kit – Engineered for high compression and raw power, includes rings, wrist pin, and circlips.
  • Wiseco Heavy Duty Crankshaft & Main Bearings – Assembled for rugged endurance with premium Japanese-made Koyo or NTN bearings.
  • Complete Gasket & Seal Kits by Cometic and Wiseco – Top-quality components for a leak-free, ultra-durable rebuild.
  • Kibblewhite Red Viton Valve Stem Seals – Legendary seals trusted by professionals for extended performance under pressure.
  • Heavy-Duty Cam Timing Chain by BPRATV – Reliable timing for all-out throttle response.
  • Comprehensive Kit Warranty – Every component is backed by a 1-Year Warranty to ensure unmatched confidence and peace of mind.

    • Whether you’re looking to restore your YZ450F to its factory glory or push its limits on the track, this championship-grade rebuild kit offers premium parts at the best value—guaranteed.

    Get yours now and get ridding with confidence! 

    💥 BPRATV: The Best Parts. The Best Performance. The Best Price.

    BRAPPPPPPPPPP!

    PROFESSIONAL INSTALLATION REQUIRED

    DO YOU NEED THIS ITEM INSTALLED? WE HAVE YOU COVERED! CONTACT US FOR DETAILS.

    REPAIR SHOPS AND DEALERS: CONTACT US TO SET UP AN ACCOUNT FOR WHOLESALE DISCOUNTS.

    BPRATV: Over 20 Years of Excellence in Parts & Service
    Upland, CA | Monday – Friday, 7 am – 4 pm PST
    WE SHIP WORLDWIDE MONDAY THROUGH FRIDAY | ¡HABLAMOS ESPAÑOL!

    Payments: Credit Card, PayPal, Venmo, Cash App, and In-Person (Cash/Check once cleared).

    NOTICE REGARDING PHOTOS: Product photos used in our listings are for example only to show the high quality of our components. You will receive the correct quantity, size, and fitment of bearings, titanium fasteners, nuts, and bolts for the specific kit listed.

    BEARING NOTICE: In some cases, you may receive SEALED bearings. If your application requires an OPEN bearing, the seals can easily be removed.

    EMISSIONS & RACE USE ONLY: This product is exempt from emission standards and requirements of 40 C.F.R. § 1051 as provided by 40 C.F.R. § 1051.620, and California law [e.g., vehicle code §§ 27156 and 38391]. Sold ONLY for use with EPA-certified, purpose-built, nonroad vehicles used solely for closed course, nonroad competition/racing. Installation may void vehicle manufacturers' warranty and/or may be illegal in some locations.

    WARRANTY & LIABILITY: © BPRATV LLC 1-year limited warranty from manufacturer for material/workmanship defects.* Due to the nature of high performance and racing, components are sold without express/implied warranty of merchantability or fitness for a specific purpose. BPRATV LLC shall not be liable for specific, incidental, or consequential damages (loss of property, equipment, profits, or revenue) resulting from sale, installation, or use of these parts. This product is NOT DIY; we strongly recommend work be done by a qualified, experienced mechanic.

    RETURNS: Returns accepted within 30 days for items 100% complete, brand new, and in original packaging. Items installed or prepped (lubricated/sealed) are ineligible. For warranty consideration, parts MUST be sent back for physical inspection. No exceptions. We do not warranty based on photos, emails, or third-party assessments.

    SPECIALTY WARRANTIES: Cub Cylinders: Lifetime warranty for original owner via BPRATV/Millennium Technologies inspection; covers cylinder only. Titanium Fasteners: Failure during use results in replacement only. Neither warranty covers improper tuning, installation, maintenance, or misuse.

    INTERCHANGEABLE PARTS: We may substitute parts of equal quality from different manufacturers to prevent backorder delays. Prices and listings subject to change without notice.

    FEEDBACK: We work hard for your positive feedback. Please contact us before leaving feedback if you have any issues so we can assist you.