PISTON KIT Aprilia RS125 “A”, FORGED WOSSNER KIT 8253DA, SINGLE RING

This Wossner forged piston kit is designed for Aprilia RS125 motorcycles produced from 1985 to 2012. It features a standard 54.00mm bore with a piston diameter of 53.95mm and a single-ring configuration. Built for durability and efficient thermal management, the piston’s elliptical design ensures uniform expansion and optimal thrust load distribution. Precision-made in Germany, it maintains consistent performance across a wide range of 2-stroke Aprilia applications.

Features

• Forged piston kit with single ring for Aprilia RS125 (1985–2012)

• Bore size: 54.00mm (Standard)

• Piston diameter: 53.95mm

• Elliptical design for improved thermal expansion and load balance

• Designed to prevent localised pressure and piston collapse

• Made in Germany

Specifications

• Part No: 56-W9913.00A.WO

• Model: Wossner 8253DA

• Application: 2-stroke engine

• Displacement: 125cm³

• Stroke: 54.50mm

• Clearance: 0.05mm

• Compression height: 29.00mm

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

• Piston clips: CW15

• Piston pin: WP032

• Piston ring set: RSB5400

Cross-Reference OEM Part Numbers

• Not specified

Vehicle Fitments

• Aprilia AF1 Futura 1985

• Aprilia AF1 Replica 1985

• Aprilia Caponord Rally 1985

• Aprilia Europe Base 1985

• Aprilia Mini RX 1985

• Aprilia Pegaso Base 1985

• Aprilia Red Rose Base 1985

• Aprilia RS 125 1985

• Aprilia RS 125 1985

• Aprilia Syntesi Base 1985

• Aprilia Tuareg 250 1985

• Aprilia AF1 Base 1986