10:1 compression- First oversize +. PLEASE REVIEW THE SPECIFICATIONS OF THIS KIT- SHOWN IN LAST 3 PHOTOS. Includes 2 Pistons, 2 Ring Kits, 2 Wrist Pins, 2 Circlips. (one of the circlips has a small amount of rust on it- it would clean off). 85-'98 Harley Davidson Big Twin Evolution Motors (80 CI).The item "85-98 Harley Davidson Evolution EVO Big Twin 1340 Wiseco Piston Kit 101 (+0.10)" is in sale since Wednesday, July 10, 2019. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Pistons, Rings & Pistons Kits". The seller is "bmcmark" and is located in Bettendorf, Iowa. This item can be shipped worldwide.