428 Conversion - Driven Racing Steel Rear Sprocket Honda Grom / CUB / Monkey 125 (2014-2021)
Made in USA!
A 428 Chain is required to run this sprocket on a Honda Grom.
428 Conversion - Driven Racing Steel Rear Sprocket Honda Grom / CUB / Monkey 125 (2014-2021)
- One of the lightest 428 steel sprockets available today
- Designed using proprietary EST Technology
- Performance and longevity all in one sprocket
- Attractive black zinc semi-gloss finish
- Lowered surface to remove unnecessary weight
428 Chain is recommended for Honda Groms / Monkey / Cub 125with higher displacement engines
The stock rear sprocket size on the Honda Grom is 34 tooth. You can go up to increase your acceleration at the expense of top end speed. If you go down you can get a higher top end speed at the expense of acceleration. A few rules of thumb with 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
