PISTON KIT 98-01 YZ125 54.00 B, WOSSNER 8091DB YAMAHA MX

This Wossner piston kit with a 54.01mm bore (+0.01mm oversize) is engineered for Yamaha YZ125 and WR125 models from 1998 to 2001. Made in Germany, the forged construction and advanced design ensure reliable performance under high thermal and mechanical loads common in two-stroke engines.

Features

• High-strength forged piston for increased durability

• Superior heat transfer design from combustion chamber to cylinder wall

• Elliptical shape ensures even load distribution and minimises piston distortion

• German-manufactured for precision and quality

Specifications

• Bore size: 54.01 mm

• Actual piston size: 53.96 mm

• Display (cm³): 125

• Stroke (mm): 54.50

• Clearance (mm): 0.05

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

• Dome volume: Not specified

• 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# 8091DB

• Lock: PN# CW15

• Pin: PN# WP032

• Ring Set: PN# RSB5400

• Rod: PN# P2019