Specifications Piston Diameter: 55mm Gudgeon Pin Diameter: 15mm Height (Including Skirt): 63mm Height (Excluding Skirt): 46mm IMPORTANT INFORMATION This piston is larger than the standard diameter and will require the cylinder to be rebored or resleeved. Suitable for the following models Aprilia AFI 125 Replica [1988-1994]Aprilia AFI 125 Sintesi [1988-1989]Aprilia AFI 125 Sport [1993]Aprilia AFI Sport Pro 125 [1992-1993]Aprilia AFI Super Sport 125 [1988-1990]Aprilia Classic 125 [1995-2001]Aprilia Europa 125 [1991-1993]Aprilia Extrema RS125R [1994-2005]Aprilia Futura 125 [1991-1992]Aprilia Futura Sport 125 [1992-1993]Aprilia Pegaso 125 [1993-1999]Aprilia RED ROSE 125 [1988-1995]Aprilia RS 125 [1998-1999]Aprilia RS 125 [2004-2008]Aprilia RX 125 [1992-2001]Aprilia RXR125 [1990-1993]Aprilia Red Rose 125 [1996-1998]Aprilia Tuareg 125 [1986-1987]Aprilia Tuareg Freno Disco 125 [1987]Aprilia Tuareg Rally 125 [1985-1993]Aprilia Tuareg Wind 125 [1988-1992]Aprilia Tuareg Wind AE125 [1989-1990]