Wiseco · New
Wiseco Yamaha YZ450F/WR450F Bottom End Gasket Kit
MPN WB1166 · Store SKU wisWB1166
Supplier stock checked 11/7/2026, 6:42:03 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
Wiseco's bottom-end rebuild kits help save time and money for your dirt bike, ATV, or UTV bottom-end rebuild. Available for many popular applications, these kits contain a crankshaft assembly, main bearings, and a bottom-end gasket kit, all in one box under one part number. Wiseco offers top-end, bottom-end, and other gasket kits for many dirt bike, street bike, ATV, UTV, PWC, and snowmobile applications. Wiseco gasket kits deliver OEM+ quality for convenient and reliable rebuild jobs. Wiseco, Bottom End Gasket Kit, Yamaha YZ450F / WR450F Bottom End Gasket Kit Yam YZ450F/WR450F Bottom End Gasket Kit
Manufacturer fitment & guides
Check WB1166 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y