PISTON KIT 01-09 YFM660 100 HC, FORGED WOSSNER 8577DA 3YF-11631-00-X0

Wossner forged piston kit with 100mm bore and 99.93mm size for high compression performance. Manufactured in Germany, this piston is engineered to enhance heat transfer, ensuring uniform expansion and even thrust load distribution. The elliptical design prevents localized pressure and piston collapse, making it ideal for high-performance applications. Features include high-strength forged piston for durability, optimized heat transfer for improved combustion efficiency, elliptical design for uniform expansion and reduced localized pressure, and high compression ratio for enhanced engine performance. Specifications include bore 100mm, size 99.93mm, part number 8577DA, OEM compression ratio 19.20:1, lock part number CW22, ring set part number 1000XSY, rod part numbers P4037 (2001) P4038 (2002-2005), displacement 660 cm³, stroke 84.00mm, clearance 0.07mm, dome volume +18.20 cm³, and compression height 27.00mm. Cross-reference OEM part numbers are 3YF-11631-00-X0 and 44737M10000.