The Best Parts • The Best Performance • The Best PriceYamaha YFZ450R YFZ 450R Wiseco Piston 98mm BIG BORE Cylinder Top End Rebuild Kit
20003, M1006, C7908, 71014-5, 2S2-11181-00-00, 3VD-14613-01-00, 94591-57120-00, 2S2-11311-30-00, 4FM-12213-00 2S2-11311-30-00 5TG-11631-12-00 5TG-11633-10-005TG-11631-21-00 2S2-11181-00-00, M1002 20003, C7908, 71014-5, 2S2-11181-00-00, 93450-22027-00 2S2-11181-00-00 2S2-11351-00-00 4FM-12213-00-00, 4906M09800 247952 M1009 222086
Brand New Complete Yamaha YFZ 450R Top End Rebuild Kit / Wiseco Big Bore Piston Kit / Cometic Top End Gasket
Yamaha YFZ450R & YFZ450X Fuel Injected Models ONLY
Years 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Add Amazing & Reliable Power With The Best Components In The Industry!
This Complete Top End Rebuild Kit Includes:
BPRATV 98mm Big Bore Nikasil Plated Cylinder (1 Year Warranty)BPRATV Custom Wiseco 98mm 12.75:1 Armor Glide Piston Kit (Includes Piston, Rings, Pin, & Clips)Cometic Big Bore Complete Top End Gasket KitKibblewhite Red Viton Valve Stem Seals (5)NGK Iridium Spark Plug
Piston uses pump or race gas.
BPRATV - The Best Parts. The Best Performance. The Best Price. BRAPPPPPPPPPP!Photos Are For Example Only Images show product quality, components, and visual reference. Exact parts, brands, finishes, quantities, or packaging may vary by kit. Please read the full product description for exact details before purchasing.Complete Your Build
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$339.98 BPRATV Performance Standard
Built around proven parts, real-world support, and the performance-focused service riders expect from BPRATV.
Performance Parts SpecialistsUSA Based Company
Worldwide ShippingTechnical Support AvailableTrusted by RidersBPRATV - The Best Parts. The Best Performance. The Best Price.
BRAPPPPPPPPPP!Professional Installation Required
Professional installation by a qualified technician is recommended for best results.
If you have questions about this item or your order, our customer support team is always happy to help.
BPRATV: Over 20 Years of Excellence in Parts & Service
Upland, CA | Monday - Friday, 7 am - 4 pm PST
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Notice Regarding Photos: Product photos used in our listings are for example only to show item quality, components, and visual reference. You will receive the correct quantity, size, and fitment for the specific kit listed. Exact brands, finishes, packaging, or small components may vary when equivalent-quality parts are used. Please read the full product description for exact details before purchasing.
Bearing Notice: In some cases, you may receive sealed bearings. If your application requires an open bearing, the seals can be removed when appropriate for the application.
Emissions & Race Use Only: Some products may be exempt from emission standards and requirements under 40 C.F.R. § 1051.620 and/or applicable California law. Certain parts are sold only for use with EPA-certified, purpose-built, nonroad vehicles used solely for closed-course, nonroad competition/racing. Installation may void the vehicle manufacturer's warranty and/or may be illegal in some locations. Buyer is responsible for confirming legal use in their application and location.
Warranty & Liability: Due to the nature of high-performance and racing applications, components may be sold without express or implied warranty of merchantability or fitness for a specific purpose except where specifically stated. BPRATV LLC shall not be liable for special, incidental, or consequential damages including loss of property, equipment, profits, or revenue resulting from sale, installation, or use of these parts. High-performance parts are not DIY items; work should be performed by a qualified, experienced mechanic.
Returns: Returns are accepted within 30 days for eligible items that are 100% complete, brand new, unused, uninstalled, and in original packaging. Items that have been installed, prepped, lubricated, sealed, modified, or used are not eligible. For warranty consideration, parts must be sent back for physical inspection. We do not warranty based on photos, emails, or third-party assessments.
Specialty Warranties: Certain specialty items, such as Cub cylinders or titanium fasteners, may have separate warranty terms. Any warranty does not cover improper tuning, installation, maintenance, or misuse.
Interchangeable Parts: Some kits may include interchangeable components or equivalent-quality substitutions to prevent backorder delays. Prices, included items, and listings are subject to change without notice.
Customer Satisfaction: If you experience any issue with your order, please contact us through Messages before leaving response. Our team is committed to resolving any concerns quickly and professionally.
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