Box Three Prime 9 Shifter Size:Single Shift We engineered the inner link

We engineered the inner link spacing to be a little tighter than other 8-speed chains and is optimized for use with our Box Four Wide/Narrow Chainring

Why not just pick up the Box Drivetrain Tool Kit and set your mind at ease

Box One Shift Cable & Housing Kit

Lockring & Cogs replacement for Box Four Ebike cassettes

then level up with this group

Box Three Prime 9 Shifter Size:Single Shift We engineered the inner linkThe Box Three shifter makes good use of nylon composites in both top and bottom shells as well as the levers. Box Three is our performance and value tier. So this shifter sheds all the fancy trappings of the top 2 tiers but maintains their shifting characteristics. All Prime 9 shifters take advantage of the 9 speed's inherent durability, simplicity, and reliability. Not only is the shifter mechanism joyfully simplified, but fewer shifts are needed for