BOX

One 1-1/8" Stem Lock

The BOX One 1-1/8" Stem Lock is built for riders who demand precision and reliability from every component on their bike. This forged and CNC-machined aluminum headset compression device delivers a rock-solid interface between your stem and fork, ensuring your cockpit stays tight and aligned no matter how rough the ride gets.

With an adjustable range from 166mm to 225mm, the BOX One Stem Lock offers a versatile fit that works across a wide range of setups—from lightweight race bikes to all-out trail machines. Its clean, streamlined design keeps your front end secure without adding unnecessary weight, making it a smart upgrade for riders who care about performance and detail.

• Forged and CNC-machined aluminum construction for maximum strength and low weight
• Adjustable length (166mm–225mm) fits a variety of fork and stem combinations
• Precision compression system keeps your headset perfectly tensioned and creak-free
• Ideal for high-performance builds and riders who value top-tier componentry

Whether you're dialing in a race bike or fine-tuning your daily ride, the BOX One 1-1/8" Lock ensures consistent, dependable performance where it matters most—up front.