Box's 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 Single-shift lever is a sound choice for e-bikes
- The Prime 9 chain is compatible with modern narrow/wide chainrings, and resists stretching over time, and decreases wear on the cassette and chainring
- The x-wide rear derailleur features a limited slip clutch, which engages instantly with constant torque for less chain slap, better chain engagement and no dropped chains
- The Sunrace CSM983 11-50t cassette offers ultra-wide ratio with consistent progressions
- Group Weight: 1430g
- Shifter: Box 1 Prime 9 Single Shift - 140g
- Rear Derailleur: Box 1 Prime 9 X-Wide - 300g
- Chain: Box Prime 9 - 310g
- Cassette: SunRace CSM983 11-50 - 680g
Manufacturer BOX
Model BOX One Prime 9 Groupset
Group Weight
1430
Box 1 Prime 9 - 140g
Box 1 Prime 9 - 300g
Box Prime 9 - 310g
SunRace CSM983 11-50 - 680g
11-13-15-18-22-28-34-42-50
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