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Greetings! Proudly celebrating 9 years of cycling magic in the Laurel District. Enjoy new LOWER prices on Marin, SE, Fuji and Breezer in stock. Our Sept. 2023 hours are: M-F 11-6, SAT 10-6. Closed Sunday. We are open Tuesday Sept. 26 in defiance of ridiculous calls for a "merchant strike." A strike is when workers withhold their labor so the boss loses profits. When merchants withhold services, clients simply find someone else to provide the service. Community safety means safety for *all* of us, including the most vulnerable, not just the privileged business class with access to media outlets. Questions? E-mail us at or text/call us at 510-328-1158.

BOX One Shifter Clamp 31.8mm

BOX One Shifter Clamp 31.8mm
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The Box One 31.8 shifter clamp is an accessory that converts any Box shifter to be compatible with modern drop handlebars found on gravel, cyclocross, and commuter bikes. While these bikes traditionally come with clutchless 2-by drive-trains, the addition of this clamp makes the conversion to a more user-friendly and durable Prime 9 drive-train affordable and simple.

- Fits All Box Shifters
- Matte Onyx™ Finish
- Fits 31.8 Drop Bars
- 2 Piece Hinged Design

- Box One™ 9S Shifter
- Box Two™ 9S Shifter
- Box Three™ 9S Shifter
- Box Four™ 8S Shifter

- Hardware 1215 Steel
- Material Aluminum
- Compatibility Works with 7, 9, and 11 Speed Systems
- Weight 22g/0.77oz

Part Numbers

Option UPC MPN
Black 639266097549 BX-SH1-CA318-BK