Piston Kit - Aprilia RS 125 / RX 125 / MX 125 / SX 125 / AF1 125 / Pegaso 125 / Red Rose 125 / Europa / Tuono - 125 2T - ProX

Please select the piston size from the box above.

ProX piston kit for motorcycles equipped with ROTAX 122 / ROTAX 123 engines of 125cc in 2-stroke. Among the most important applications are: Aprilia RS 125 (1992-2010) / RX 125 (1989-1998) / MX 125 (2004-2006) / RX 125 / SX 125 (2008-2010) / AF1 125 / AF1 Sintesi / AF1 Futura 125 (1988-1992) / Pegaso 125 (1989-1994) / Red Rose 125 (1987-1994) / Europa 125 (1990-1991) / Tuono 125 (2003-2004). The complete list of applications can be found below.

Technical specifications:
- standard cylinder diameter (factory diameter): 54.00 mm
- engine type: 2-stroke
- total piston length (B): 63.50 mm
- piston pin diameter (C): 15.00 mm
- compression height (D): 21.50 mm
- pin ring position measured from center (E): 13.00 mm
- pin ring position measured from center (F): 13.00 mm
- internal distance of piston pin (G): 20.50 mm
- piston crown shape: domed
- other information:
- manufacturing technology: cast piston coated with molybdenum disulfide (MoS2)

Available piston sizes (A):
- A (53.95 mm)
- B (53.96 mm)
- C (53.97 mm)
- D (53.98 mm)
- E (53.99 mm)