Box Three Prime 9™ Groupset – 9 Speed
Box Three Prime 9™ Groupset – 9 Speed
Box Three Prime 9™ Groupset – 9 Speed
Box Three Prime 9™ Groupset – 9 Speed
Box Three Prime 9™ Groupset – 9 Speed
Box Three Prime 9™ Groupset – 9 Speed
Box Three Prime 9™ Groupset – 9 Speed

Box Three Prime 9™ Groupset – 9 Speed

Sale price$290.00 CAD

Upgrade your ebike conversion with the Box Three Prime 9™ Groupset, designed for riders who demand strength, simplicity, and reliability. With wide-range gearing and fewer cogs than traditional drivetrains, Prime 9™ delivers smooth performance while resisting the wear and tear that mid-drive motors are known to cause.

Choose between a Multi-Shift version with an 11–46T cassette for fast gear changes, or the Single-Shift Ebike Version with a 12–46T cassette, engineered specifically to handle the torque of mid-drive systems. Either way, you’ll enjoy a drivetrain that lasts longer, shifts cleaner, and keeps your bike rolling without constant maintenance.

Why It’s Perfect for Mid-Drive Ebikes

  • Reinforced cassettes and chain for maximum durability
  • Simple 9-speed range reduces complexity while covering every terrain
  • Clutch derailleur prevents chain drops and ensures crisp shifting
  • Optimized gearing options designed to withstand powerful mid-drives
Only 1 unit left
Box Three Prime 9 Groupset: Multi-Shift (11–46T)

Features

  • Prime 9™ Technology – Wide range without excess gears: “9 is fine.”
  • Mid-Drive Ready – Designed to handle torque that shreds standard drivetrains.
  • Durable Construction – Hardened steel cassette and reinforced chain extend lifespan.
  • Secure Shifting – Clutch derailleur keeps the chain tight, even on rough terrain.
  • Choice of Control – Pick Multi-Shift for speed or Single-Shift Ebike for control.

Specs

  • Speeds: 9-Speed
  • Cassette: 11–46T (Multi-Shift) / 12–46T (Ebike)
  • Derailleur: Box Three Prime 9™, clutch equipped
  • Chain: Prime 9™ specific, hardened steel
  • Shifters: Multi-Shift or Single-Shift Ebike
  • Compatibility: Fits Shimano® Hyperglide (HG) freehub bodies; optimized for mid-drive ebikes. Requires Box® Prime 9™ chain for best performance. Not cross-compatible with 10/11/12-speed systems.

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