Wiseco · New
Wiseco 99-15 HD Twin Cam 3.937 Gasket Kit
MPN W6957 · Store SKU wisW6957
Supplier stock checked 11/7/2026, 4:21:25 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
V-Twin performance has been around since some of the earliest days of motorcycle racing and engine modification, and Wiseco has been there since the beginning. Applying over 80 years of experience, Wiseco has fine-tuned its V-Twin pistons for each specific engine platform to optimize performance and durability. From reliable rebuilds to all-out race, Wiseco has the pistons for your V-Twin build. 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, Gasket Kit, HD Twin Cam 3.937 in. Bore, '99-15
Manufacturer fitment & guides
Check W6957 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
