Wiseco · New
Wiseco Top End Bearing 18 x 22 x 21.8mm Bearing
MPN B1003 · Store SKU wisB1003
Supplier stock checked 11/7/2026, 11:52:30 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
As the leading manufacturer of forged two-stroke pistons, Wiseco knows top end bearings are crucial to your top end rebuild. Wiseco two-stroke top end bearings are manufactured by leading bearing suppliers and inspected for quality. Wiseco, Top End Bearing, 18 x 22 x 21.8 mm Bore Size: 66.40, Size: STD
Manufacturer fitment & guides
Check B1003 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y