Description

The Yamaha YFZ450R Complete Top End Rebuild Kit brings together the key parts needed to refresh a worn upper engine. It tackles compression loss, cylinder wear, and sealing deterioration in one set.

REV6 checks every included component for fit and durability before shipment. A 1-year parts warranty backs your rebuild where compression and sealing matter.

THIS KIT INCLUDES

• STD forged piston kit
• Top end gasket set
• Cylinder

LEARN MORE & GET SUPPORT

Find coverage details on our warranty policy, read rebuild tips on the REV6 blog, browse answers in the FAQ center, or contact our team for assistance.

FITMENT

Yamaha YFZ450R
2009–2026

TAKE ACTION
If top end wear has reduced compression or power delivery, this kit supplies what you need to rebuild the upper engine with dependable parts. Ships nationwide—add it to your cart and rebuild with confidence.

Your service matters to us—veterans receive special pricing at REV6.