All 5 speed Sportster gears are made from high nickel alloy; steel. Gears are then heat treated and shot-peened to give maximum durability and strength. Also, where applicable, drive dogs have milled lead-in ramps to improve shifting and reduce wear on drive dogs and slots. 2.61 1st gears provide true close ratio shifting into 2nd. Plus 7MPH of usable 1st gear 20 Toooth and 30 tooth combination