Wiseco · New
Wiseco Mitsu Evo 4-9 4G63 Asymmetric Skirt Bore 86.50mm - Size +.060 - CR 9.5 Piston Set
MPN K666M865AP · Store SKU wisK666M865AP
Supplier stock checked 11/7/2026, 9:31:37 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
Professional Series forged racing pistons from Wiseco are no-expense-spared pistons designed for the serious racers and builders. Packed full of custom-level performance and durability features and provided with premium rings, Professional Series pistons are designed and built for use in heavy to severe duty race builds. Remove your limits with Wiseco's Professional Series. Wiseco Mitsubishi 4G63T Piston Set, 86.50 mm Bore, 34.87 mm Compression Height, 0.866 in. Pin Diameter, Sport Compact, Set of 4. Piston Set, Mitsubishi, 4G63T, 86.50 mm Bore, Sport Compact, Set of 4
Manufacturer fitment & guides
Check K666M865AP against the manufacturer’s application information below.
Part-specific notes
- Not CARB approved. Destination and intended-use restrictions must be checked before sale.
- Emissions acknowledgement required before purchase.
- California Proposition 65: Y
