Wiseco · New
Wiseco 13-15 KTM 250SX-F 13.91 CR (40074M) Piston Kit
MPN PK1894 · Store SKU wisPK1894
Supplier stock checked 11/7/2026, 4:49:39 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
The Wiseco team has remained at the forefront of powersports performance through every era and evolution, including the development of high-performance 4-strokes. Today, Wiseco's forged 4-stroke pistons are designed for each specific engine application and built to the tightest tolerances for the ultimate combination of performance and strength. Proven at every level of riding, Wiseco 4-stroke pistons are ready to deliver the power and reliability you're looking for. Premium materials produce the best sealing technology available exceeding O.E.M. standards. Dedicated forging. Superior strength/weight ratio utilizing Aerospace alloy. Wiseco 4 Stroke Forged Series Piston Kit, 78.00 mm Bore, 13.9:1 CR PK1894, 13.9:1, 78 mm
Manufacturer fitment & guides
Check PK1894 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
