🎉 Up to 70% Off Selected ItemsShop Sale
HomeStore

PISTON KIT 98-01 YZ125 55.00, WOSSNER 8091D100 YAMAHA MX

Product image 1
Product image 2
Product image 3
Product image 4

PISTON KIT 98-01 YZ125 55.00, WOSSNER 8091D100 YAMAHA MX

PISTON KIT 98-01 YZ125 55.00, WOSSNER 8091D100 YAMAHA MX

This Wossner piston kit with a 55.00mm bore (+1.00mm oversize) is designed for Yamaha YZ125 and WR125 models from 1998 to 2001. Manufactured in Germany, the forged piston ensures strength, uniform heat expansion, and reliable performance under two-stroke engine conditions.



Features





  • Forged piston construction enhances strength and durability




  • Efficient heat transfer from combustion chamber to cylinder wall




  • Elliptical design ensures even pressure distribution and minimises piston distortion




  • Produced in Germany for consistent quality and precision





Specifications





  • Bore size: 55.00 mm




  • Actual piston size: 54.95 mm




  • Display (cm³): 125




  • Stroke (mm): 54.50




  • Clearance (mm): 0.05




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




  • Compression height (mm): 28.00





Vehicle Fitments





  • 1998 Yamaha WR125




  • 1998 Yamaha YZ125 Base




  • 1999 Yamaha WR125




  • 1999 Yamaha YZ125 Base




  • 2000 Yamaha WR125




  • 2000 Yamaha YZ125 Base




  • 2001 Yamaha WR125




  • 2001 Yamaha YZ125 Base





Included Components





  • Piston: Wossner PN# 8091D100




  • Lock: PN# CW15




  • Pin: PN# WP032




  • Ring Set: PN# RSB5500




  • Rod: PN# P2019



$230.72
PISTON KIT 98-01 YZ125 55.00, WOSSNER 8091D100 YAMAHA MX—
$230.72

Product Information

Shipping & Returns

Description

This Wossner piston kit with a 55.00mm bore (+1.00mm oversize) is designed for Yamaha YZ125 and WR125 models from 1998 to 2001. Manufactured in Germany, the forged piston ensures strength, uniform heat expansion, and reliable performance under two-stroke engine conditions.



Features





  • Forged piston construction enhances strength and durability




  • Efficient heat transfer from combustion chamber to cylinder wall




  • Elliptical design ensures even pressure distribution and minimises piston distortion




  • Produced in Germany for consistent quality and precision





Specifications





  • Bore size: 55.00 mm




  • Actual piston size: 54.95 mm




  • Display (cm³): 125




  • Stroke (mm): 54.50




  • Clearance (mm): 0.05




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




  • Compression height (mm): 28.00





Vehicle Fitments





  • 1998 Yamaha WR125




  • 1998 Yamaha YZ125 Base




  • 1999 Yamaha WR125




  • 1999 Yamaha YZ125 Base




  • 2000 Yamaha WR125




  • 2000 Yamaha YZ125 Base




  • 2001 Yamaha WR125




  • 2001 Yamaha YZ125 Base





Included Components





  • Piston: Wossner PN# 8091D100




  • Lock: PN# CW15




  • Pin: PN# WP032




  • Ring Set: PN# RSB5500




  • Rod: PN# P2019



PISTON KIT 98-01 YZ125 55.00, WOSSNER 8091D100 YAMAHA MX | SMXOFFROAD Ltd