Stay in the loop
2Bros MCS LTD Company number 16176735 - Vat No. GB 508324506 - info@2bros-mx.com - Tel: 03301333748
This Wossner forged piston kit features a 56.50mm bore (56.44mm) and is specifically designed for the 1984 Yamaha YZ125. Manufactured in Germany, it offers improved structural strength and thermal performance. The piston’s elliptical design ensures an even bearing surface under heat expansion, helping to distribute thrust loads uniformly and reduce the likelihood of collapse.
Features
Forged piston construction for enhanced durability
Optimized for efficient heat transfer to the cylinder walls
Elliptical design ensures uniform pressure distribution during thermal expansion
Made in Germany
Specifications
Bore size: 56.50mm (56.44mm)
Display volume: 123 cm³
Stroke: 50.00 mm
Clearance: 0.06 mm
Compression height: 30.80 mm
Theoretical weight: Not specified
Compression ratio: 2-stroke (Wossner and OEM)
Cross-Reference OEM Part Numbers
Piston: 8120D050
Lock: CW16
Pin: WP036
Ring Set: RSB5650
Vehicle Fitments
Yamaha YZ125 1984