PISTON KIT 90-93 YZ125 56.00 A, WOSSNER 8114DA YAMAHA MX 4DB-11631-00-A0

The Wossner piston kit 8114DA is a standard-size forged piston with a 55.94mm bore, designed for Yamaha YZ125 two-stroke models from 1990 to 1993. This piston offers robust performance and reliability, utilising a forged construction and elliptical geometry to enhance heat management and reduce localised stress during operation. Manufactured in Germany, it meets the demands of high-performance off-road applications.

Features

• Forged piston construction for enhanced strength and longevity

• Optimised for superior heat transfer from combustion chamber to cylinder wall

• Elliptical shape provides even bearing surface under thermal expansion

• Precision engineered and manufactured in Germany

Specifications

• Display (cm³): 124

• Bore size: 55.94mm (standard for 56mm cylinder)

• Stroke (mm): 50.70

• Piston-to-wall clearance (mm): 0.06

• Compression height (mm): 28.00

• Compression ratio: 2-stroke (Wossner and OEM)

Cross-Reference OEM Part Numbers

• Wossner Piston: 8114DA

• Lock: CW16

• Pin: WP036

• Ring Set: RSB5600 x 2

• Internal Reference Part No.: 56-W629+00A.WO

• OEM Cross-Reference: 4DB-11631-00-A0

Vehicle Fitments

• 1990 Yamaha YZ125

• 1991 Yamaha YZ125

• 1992 Yamaha YZ125

• 1993 Yamaha YZ125