PISTON KIT-4 KZ1000J,R D73.00, WOSSNER K8796D350-4 KAWASAKI

Wossner 4-piston kit for Kawasaki KZ1000J and KZ1000R models with a 73.00mm bore. This kit includes four forged pistons with a 72.94mm diameter and a +3.5mm oversize fitment. Engineered for increased displacement and improved compression, this kit enhances engine performance while maintaining structural reliability. Features include forged piston construction for superior strength and durability, optimized heat transfer for efficient combustion, an elliptical profile for uniform bearing surfaces under heat expansion, and reduced localized pressure distribution to prevent piston collapse. Manufactured in Germany, the complete kit includes 4 pistons, pins, rings, and circlips. Specifications: Bore 73.00mm, Diameter 72.94mm, Engine Displacement 1075 / 1105 cm³, Stroke 66.00 mm, Clearance 0.06 mm, Compression Ratio (Wossner) 1075 cc = 10.30:1 / 1105 cc = 10.50:1, Compression Ratio (OEM) 9.20:1, Dome Volume 18.80 cm³, Compression Height 25.30 mm, Theoretical Weight 25.30 g, Engine Cylinders 4, Clips P/N CW17, Pin P/N WP083, Ring Set P/N 730XDS. Cross-reference OEM Part Numbers: 56-W9934.350.WO, Wossner Piston K8796D350-4.