- Prime 9 Technology is a counter-intuitive philosophy based on the less is more theory - it embraces range without adding complexity
- Adding an extra tooth to each of the three highest gears provides increased durability and decreased wear for the heavier loads of E-Bike riding
- Compatible with standard HG style freehub bodies
- Ultra-wide ratio with consistent progression
- Steel Stamped cogs pinned to lightweight spiders
- E-Bike optimized 12 tooth cassette gearing
- FH CASS BOX TWO PRIME 9 12-50 E-BIKE BK 9s
Gears: 9sp
Cogs: 12-14-16-18-22-28-34-42-50
Color: Black
