BOX Three Prime 9 X-Wide Single Shift eBike Groupset - Includes X-Wide Rear Derailleur 11-50t Cassette Single Shift Shifter Prime 9 Chain. Boxs Prime 9 Technology is a counter-intuitive philosophy based on the less is more theory. It embraces range without adding complexity. The outcome is fewer parts reduced weight and increased durability.
Prime 9 technology offers the same range as a 12-speed drivetrain with fewer gears to shift through
Fewer parts reduced weight and increased durability
Prime 9 drivetrains significantly reduce the chain angle in the lowest gears allowing the chain to run straighter across all gears increasing the life of the chain and cassette
The 2-piece multi-shift pull lever allows for riders to move up to 3 gears per shift
The Prime 9 chain is compatible with modern narrow/wide chainrings and resists stretching over time and decreases wear on the cassette and chainring
- TECH SPECS