This is a Piston for use with Yamaha Banshees all years +115 Long Rod crankshafts 54 or 58 mm Stroke.
If used with 115 Long Rods 58 +4 Stroker Crankshafts you will need to use a bottom Spacer Plate our Number (63) = More mid to top end Power or Custom Cut Stroker Domes = More Low to mid Power.
54mm Stock Stroke Long Rod Cranks do not need spacers or custom domes to use these pistons
Fits all Banshees ReSleeved for Big Bore 68mm to 68.50mm Bores