BOX Two Prime 9 Gen 2 9-Speed Groupset Shifter, Derailleur, Cassette & Chain – MTB & E-MTB Drivetrain Upgrade Durable Wide-Range 11-50T / 12-50T Smooth Shifting, Low Maintenance, Long Service Life
$309.99
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$309.99
Price when purchased online
Free shipping
Free 30-day returns
Sold and shipped by flexandflow.id
Free 30-day returns Details
Product details
| Management number | 210302840 | Release Date | 2026/04/02 | List Price | $124.00 | Model Number | 210302840 | ||
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- Next-Gen 9-Speed Drivetrain for MTB & E-MTB Performance: The BOX Two Prime 9 Gen 2 Groupset is engineered for riders who want maximum durability with modern performance. Updated materials, improved geometry, and advanced clutch technology deliver smoother shifting, longer service life, and easier setup. Ideal for trail, enduro, e-MTB, and aggressive terrain.
- Upgraded Gen 2 Shifter – Magnesium Shell, Metal Gears & No-Loss Engagement :The hinged-clamp shifter installs easily and adjusts for perfect rider comfort. Inside, metal injection-molded gears provide crisp, precise shifts and long-term durability. The magnesium top shell & pull lever reduce weight while increasing structural stiffness. With a no-loss shift mechanism, each lever pull immediately engages for fast, responsive gear changes.
- Heavy-Duty Derailleur with Tri-Pack 2.0 Clutch for Rough Terrain Designed to reduce ghost shifting and chain slap, the Gen 2 derailleur features near-horizontal cable routing, improved geometry, and a Tri-Pack 2.0 clutch with larger discs for higher torque and more adjustability. The wide-offset cage increases pulley stability and extends service life. Chromoly hardware enhances long-term durability for aggressive riding.
- Wide-Range Steel Cassette: 11-50T MTB or 12-50T E-Bike Option Prime 9 started with this cassette—and it remains the most durable in the lineup. Stamped steel cogs and alloy spiders maximize strength under high loads. Choose 11-50T for MTB, or 12-50T E-MTB spacing for smoother power delivery and better torque management on electric bikes. Designed for longevity and reliability in all conditions.
- High-Durability Chain with Hardened Pins & Corrosion Protection Compatible with wide/narrow chainrings, the Prime 9 chain uses hardened solid pins for long-lasting performance. Nickel-plating boosts corrosion resistance and smooth operation. Available in 126L or 144L lengths for standard, cargo, or long-wheelbase bikes. The XPT variant withstands up to 650 hours of salt spray—ideal for wet, muddy, or coastal environments.
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Rear Derailleurs
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