Bore: 81.00mm is STD size Compression Height: 47.00mm Recess Depth 1: 14.05mm Recess Diameter: 44.00mm Valve Pocket Depth 1: 0.50mm Length: 71.00mm Bolt diameter / pin: 29.00mm Bolt length / pin: 62.00mm Info: with cooling duct, with piston ring carrier, for keystone connecting rod Machined: with cut-out for oil jet

Bore: 83.00mm is STD size Compression Height: 45.65mm Recess Depth 1: 14.65mm Recess Diameter: 43.40mm Valve Pocket Depth 1: 1.49mm Valve Pocket Depth 2: 1.33mm Length: 71.65mm Bolt diameter / pin: 30.00mm Bolt length / pin: 65.00mm Info: with cooling duct, with piston ring carrier Machined: with cut-out for oil jet