Wossner Piston Kit - 8175D100 (+1.00mm) is a high-quality forged piston designed for Yamaha IT250 and Tri-Z 250 models. Manufactured in Germany, this piston is engineered for optimal heat transfer and uniform bearing surface distribution, reducing localized pressure and preventing piston collapse.

Features

• Forged piston for superior strength and durability


• Engineered for optimal combustion chamber heat transfer


• Elliptical design for uniform bearing surface and reduced piston collapse


• Manufactured in Germany

Specifications

• Bore Size: 69.00mm (Oversize +1.00mm)


• Actual Bore Diameter: 68.94mm


• Display (cm³): 246


• Stroke (mm): 68.00


• Clearance (mm): 0.06


• Compression Ratio: 2-Stroke


• OEM Compression Ratio: 2-Stroke


• Compression Height (mm): 35.80

Included Items:

• Lock (Part No. CW18)


• Wrist Pin (Part No. WP033)


• Ring Set (Part No. RSB6900 x 2)

Cross-Reference OEM Part Numbers

• 8175D100

Vehicle Fitments

• 1983 Yamaha IT250


• 1985 Yamaha Tri-Z 250


• 1986 Yamaha Tri-Z 250


• 1987 Yamaha Tri-Z 250


• 1988 Yamaha Tri-Z 250


• 1989 Yamaha Tri-Z 250