Description
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.
