Web exclusive
Derailleur lever Box Components Three Prime Single-Shift
Optimize your mountain biking experience with the Box Components Three Prime derailleur, combining unmatched performance and durability.
Sold and shipped by Sport & Go
The Box Components Three Prime 9 Single-Shift shifter is the best-value Prime 9 shifter for EABs. The Box Components Three Prime 9 Single-Shift shifter features a 2-piece resin and steel shell and lever. The Single-Shift version of the Box Three Prime 9 shifter, recommended for E-Bike use, allows only 1 gear to be shifted per change, to increase the durability of electric bike transmissions.
