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:
Honda Grom 125