NA-40002R Piston Rings 65.94mm Yam For Namura Pistons Only
NA-40003 Piston Kit OEM Style 65.92/Std 11:1 Yam
NA-40003-2K Top End Kit OEM Style 66.42/+0.50 6.6:1 Yam
NA-40003-4K Top End Kit OEM Style 66.92/+1.00 6.6:1 Yam
NA-40003-6K Top End Kit OEM Style 67.42/+1.50 6.6:1 Yam
NA-40003-8K Top End Kit OEM Style 67.92/+2.00 6.6:1 Yam
NA-40003K Top End Kit OEM Style 65.92/Std 6.6:1 Yam
NA-40004-2K Top End Kit 100.47/+0.50 11:1 Yam
NA-40004-2R Piston Rings 100.47mm Yam For Namura Pistons Only
NA-40004-4K Top End Kit 100.97/+1.00 11:1 Yam
NA-40004-4R Piston Rings 100.97mm Yam For Namura Pistons Only