Stroke: 77 Displacement: 1586ccmWossner Comp. Ratio: 11.8:1 OE Comp. Ratio: 10.0:1 Wrist Pin: 19mmnote: price includes rings, wrist pins, clips and low friction skirt coatingââBore Sizes: 80.00 - Kit Part No. K9278DA, 81.50 - Kit Part No. K9278D050, 82.00 - Kit Part No. K9278D100