PISTON KIT 87-93 KTM125, WOSSNER 8011DA FORGED MX

Wossner Forged Piston Kit 54.19mm Bore – KTM GS125 / MX125 (1987–1993)
This Wossner forged piston kit is designed for KTM GS125 and MX125 models from 1987 to 1993. Featuring a standard bore of 54.19 mm, it is engineered for 2-stroke engines requiring high durability and efficient thermal performance. The forged aluminum construction provides exceptional strength, while the elliptical design ensures a more uniform bearing surface under heat expansion, reducing localized pressure and enhancing piston longevity. Precision-manufactured in Germany.

Features

• Forged construction for superior strength and wear resistance

• Optimised for efficient heat dissipation from combustion chamber to cylinder walls

• Elliptical piston profile ensures even load distribution and reduces thrust stress

• Manufactured in Germany for consistent quality and precision

Specifications

• Bore Size: 54.19 mm

• Engine Displacement: 125 cm³

• Stroke: 54.10 mm

• Clearance: 0.06 mm

• Compression Height: 28.00 mm

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

Cross-Reference Wossner Part Numbers

• Piston Kit: 8011DA

• Lock: CW15

• Pin: WP032

• Ring Set: RSB5425 x 2

Vehicle Fitments

• 1987 KTM GS 125

• 1987 KTM MX 125

• 1988 KTM GS 125

• 1988 KTM MX 125

• 1989 KTM GS 125

• 1989 KTM MX 125

• 1990 KTM GS 125

• 1990 KTM MX 125

• 1991 KTM GS 125

• 1991 KTM MX 125

• 1992 KTM GS 125

• 1992 KTM MX 125

• 1993 KTM GS 125

• 1993 KTM MX 125