Wiseco 641M05500 Piston Kit - 1.00mm Oversize to 55.96mm control-handlebars-accessories The oversized eye port is

The oversized eye port is extremely wide for greater peripheral vision and downward visibility

1983 Honda CB1000C Custom

to the R-304

1987-1988 Yamaha YZ250

Wiseco 641M05500 Piston Kit - 1.00mm Oversize to 55.96mm control-handlebars-accessories The oversized eye port isBore: 55. 96mm Compression: Standard Compression Sizing: 1. 00mm Oversize SPECIFICATIONS. Displacement: 126cc. Bore Standard: 54. 00mm. Bore Actual: 55. 00mm. Bore Oversize: 1. 00mm. Stroke: 54. 00mm. Note: Pro Lite. Note: Cylinder sleeving required. Note: Cylinder replating required. 2165CS 55. 00 mm Ring. CW15 ROUND WIRE PIN LOCKS 15MM (PAIR). S467 PistonPin 15 x 41mm NonChromed TW All Wiseco Pistons are forged from high silicon, low expansion