Wiseco 1200 Sportster 10.5:1 Compression Piston Kit - K1748 - Harley Sportster

The Wiseco K1748 is a forged piston kit with a 10.5:1 compression ratio, built from high-silicon aluminum with a precision diamond-turned finish. It is designed for riders looking to upgrade their engine's performance with a solid foundation for a rebuild or power build.

Forged high-silicon, low-expansion aluminum gives the piston strength, while its reduced weight and improved heat transfer support durability. The 10.5:1 compression ratio is a popular choice for improving engine efficiency and power output over stock. The kit works with all common cylinder bore types, and the diamond-turned finish ensures a precise surface.

Oversize availability is offered for cylinder re-sleeving applications, making this kit suited to riders who are rebuilding or re-sleeving their engine. Part number K1748 is backed by the Wiseco name, a brand known in the performance market for forged pistons.

For off-road / closed-course race use only.

Specifications

• Brand: Wiseco
• Part Number: K1748
• Compression Ratio: 10.5:1
• Material: High-silicon aluminum (forged)
• Finish: Diamond-turned
• Weight: 2.5836 lbs
• Category: Piston kits & Components

Common questions