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2Bros MCS LTD Company number 16176735 - Vat No. GB 508324506 - info@2bros-mx.com - Tel: 03301333748
This Wossner piston kit with a 56.00mm bore (+2.00mm oversize) is engineered for Yamaha YZ125 and WR125 models from 1998 to 2001. Built in Germany, the forged piston offers superior mechanical strength, heat resistance, and consistent performance in high-revving two-stroke engines.
Features
Forged piston for high durability and strength under load
Efficient heat transfer design enhances engine cooling and reliability
Elliptical shape ensures uniform expansion, minimising stress points and risk of piston failure
Manufactured in Germany to exacting standards
Specifications
Bore size: 56.00 mm
Actual piston size: 55.95 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# 8091D200
Lock: PN# CW15
Pin: PN# WP032
Ring Set: PN# RSB5600
Rod: PN# P2019