Parts list: № Number Qty Name Options 1 YZ280318 1 Gear (SUB FOR 4028321) 2 F40211 4 Ball Bearing 3 YZ280319 1 Gear (SUB FOR 4028322) Next page: ST34985 4028949 Gear and Bearing Group, .89:1 Ratio ST34988 4028950 Gear and Bearing Group, .707:1 Ratio ST34991 4028951 Gear and Bearing Group, .628:1 Ratio ST34994 4028952 Gear and Bearing Group, .56:1 Ratio ST34997 4028953 Gear and Bearing Group, .49:1 Ratio ST34977 4028435 Gear and Bearing Group, 3.118:1 Ratio ST34974 4028434 Gear and Bearing Group, 2.50:1 Ratio ST34971 4028433 Gear and Bearing Group, 2.333:1 Ratio ST34968 4028432 Gear and Bearing Group, 2.043:1 Ratio ST34965 4028431 Gear and Bearing Group, 1.80:1 Ratio