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With improved ergonomics and thumb & index finger controls, Box One Twin Lever Shifters provide smooth and accurate transitions from gear to gear. Up to five shifts on the throw helps ensure you can move up the cassette quickly while climbing. A lightweight, machined clamp and premium, cast aluminum lever help to reduce weight. All Box One shifters include a low-friction, Nano shift cable.

• With improved ergonomics and thumb & index finger controls, Box One Twin Lever Shifters provide smooth and accurate transitions from gear to gear. Up to five shifts on the throw helps ensure you can move up the cassette quickly while climbing. A lightweight, machined clamp and premium, cast aluminum lever help to reduce weight. All Box One shifters include a low-friction, Nano shift cable.
• Ergonomic thumb and index fingers controls designed for comfort
• Machined clamp and cast aluminum lever are lightweight
• Includes a low-friction, nano shift cable