Is Prime 9 Simpler?

  • Same Range With Fewer Gears
  • Ease of Set-up
  • Wide Compatibility
  • Less Maintenance
  • Don’t Worry, All Bike Shops Are Familiar With 9 Speed Platforms!

Is Prime 9 More Durable?

  • Straighter Chain-line
  • Unique 9 Speed Chain
  • Single Shift Option (E-MTB)
  • Fewer Gears (fewer shifts)
  • Full Steel Cassette (all tiers)

Does Prime 9 Perform Better?

  • Shifting Less Means Faster Riding
  • Optimized Shift Ramps
  • Limited Slip Clutch™ Means Better Chain Retention
  • Consistent Gear Jumps
  • Lightweight Cassette

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Testimonials

Vincent Tupin // Redbull rampage wizard

I've been using the Box Prime 9 since the beginning and super happy to have another option rather than traditional drivetrain. I'm always looking to spend the maximum time on my bikes. Having a trustful and durable drivetrain is something that's helped me for all my adventures!

RICHARD GASPEROTTI // FREERIDER

The Prime 9 is the best choice for me in terms of speed, chainline durability and reliability on my e-bike., which makes it an even greater trail weapon.9 is fine for life.

ELIOTT LAPOTRE // FREERIDER

I have been riding Prime 9 on my E-bikes for few years now, and I can't complain. I never broke one, not even a chain. It’s always performing well, requires less shifting, and simpler for my daily rides. Love it for all my bikes.