Evolution Straight cut 24 tooth input gear. Usually has 2 identification rings on gear teeth.
Achievable drop gear ratios when using our Evolution gears:
22 tooth primary - 30 tooth idler - 25 tooth input = 1.136-1
24 tooth primary - 30 tooth idler - 24 tooth input = 1.0-1
23 tooth primary - 30 tooth idler - 23 tooth input = 1.0-1
24 tooth primary - 30 tooth idler - 25 tooth input = 1.0416-1
23 tooth primary - 30 tooth idler - 24 tooth input = 1.0434-1
22 tooth primary - 30 tooth idler - 23 tooth input = 1.045-1
23 tooth primary - 30 tooth idler - 25 tooth input = 1.0869-1
22 tooth primary - 30 tooth idler - 24 tooth input = 1.09-1
24 tooth primary - 30 tooth idler - 23 tooth input = 0.958-1