Box Three Prime 9 Rear Derailleur
Best budget-friendly drivetrain upgrade for value-conscious mountain bikers.
This derailleur offers a simplified yet fully featured design, making it a wallet-friendly option for upgrading your drivetrain. It incorporates a limited slip clutch for improved chain retention and sealed bearing pulleys for smooth operation. Its robust construction ensures durability, and it boasts compatibility with a wide range of cassette sizes.
$79.99
at
Eugene Electric Bicycles
Who it's for
- Riders prioritizing low-maintenance gear and long-term component longevity
- Budget-conscious mountain bikers needing massive climbing range
- Value-focused cyclists wanting clutch-equipped performance on a budget
Who should skip it
- Weight-weenies chasing the lightest possible bike build
- Performance riders accustomed to ultra-crisp, high-end shifting precision
- Cyclists who prefer mixing and matching drivetrain components
Performance breakdown
Drivetrain Range
Handles wide 11-50t gear ratios with impressive, consistent shifting reliability.
Clutch Stability
Tri-Pack clutch keeps chain slap manageable on rough, technical trail sections.
Build Durability
Rugged construction withstands trail impacts better than most entry-level components.
Installation Ease
Straightforward setup process gets you back on the trail quickly.
Shift Precision
Solid performance, though lacks the crisp snap of higher-end racing derailleurs.
Maintenance Simplicity
Bushing pulleys require more frequent cleaning to maintain smooth operation.
Key Specs
MPN
Long Cage / Black / 9-speed
Still have a question?
Ask Metto anything about the Box Three Prime 9 Rear Derailleur before you decide.
