Driven Racing 420 Front Sprocket - Honda Grom / Monkey 125
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Driven Racing EVO TECH 15 tooth front sprocket for Honda Grom and Monkey 125cc with 420 chain. This is a high-quality, case-hardened steel replacement sprocket. Driven Honda Grom / Monkey 125 front sprockets for 420 chain is available in 15 tooth, which is the stock front sprocket size on the Honda Grom. A few rules regarding gear ratios for sprockets are as follows: Drop teeth on front/add teeth to rear = increased torque, increased acceleration, wheelies, racetracks with short straights Add tooth on front/reduce teeth on rear = increased top end speed, open road cruising, lowers RPMs, better gas mileage, tracks with long straights 1 down on the front is like adding 3 teeth on the rear The bigger the rear sprocket, the lower the gearing and the faster the acceleration Available in 15 Tooth Case Hardened Fits #420 Chain Inner Diameter (peak to peak): 14mm Inner Diameter (valley to valley): 17mm Thread Size: M6x1.00 Made in USA! Honda Grom 125
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