Wiseco K1670 is a forged 3-5/8" big bore piston kit designed for 1984-1999 Harley Davidson 1340 Evolution engines, increasing displacement to 88 cu.in. (1438cc). This kit features 9.25:1 compression ratio flat-top pistons, includes ring sets, wrist pins,missing two wrist pin clips and requires cylinder reboring.
Key Details for Wiseco K1670:
Engine Fitment: 1984–1999 Harley Davidson 1340cc Evolution.
Bore Size: 3.625" (Standard big bore).
Compression Ratio: 9.25:1 (Flat Top).
Application: Increases 1340cc to 88 cubic inches.
Kit Contents: Two forged pistons, rings, wrist pins, Missing two snap rings
Notes: Reboring of cylinders is required; 1990-1995 models may require aftermarket cases.
These forged pistons are designed for improved strength, durability, and better heat management compared to cast alternatives, making them ideal for high-performance applications. opened up kit to use on a motor ended up going a different compression. still new in box!
.selling as pictured.
more than welcome to pick up at shop in butler pa & save shipping.
