Description

The Yamaha YFZ450R Complete Bottom End Rebuild Kit brings together key components that wear in the lower engine. It helps correct crankshaft wear, seal leakage, and drivetrain bearing play in one set.

REV6 reviews each part for fit and durability before it ships. A 1-year parts warranty covers your rebuild where strength and sealing matter.

THIS KIT INCLUDES

• Crankshaft
• Crankshaft main bearings
• Complete gasket kit
• Transmission bearings kit
• Oil seal kit
• Water pump rebuild kit

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Yamaha YFZ450R complete top end rebuild kit

LEARN MORE & GET SUPPORT

See coverage details on our warranty policy, find rebuild insights on the REV6 blog, explore answers in the FAQ center, or contact our team for support.

FITMENT

Yamaha YFZ450R
2014–2026

TAKE ACTION
If your bottom-end components show wear or leaks, this rebuild kit equips you with dependable parts and REV6 quality. Ships nationwide—add it to your cart and finish your rebuild with confidence.

We proudly support our veterans with dedicated discounts.