An excellent choice for mountain, cross, and road cyclists who prefer to have the computer above the stem. Far and away more advanced than the plastic options on the market. Boost Stem Mount is specifically designed to fit atop the shortest stems on the market today. The Gravity Cap replaces your existing top cap and is ideal for Downhill, Enduro, Gravel, Touring, etc . The mount replaces a standard 5mm spacer and is locked securely in place by the top cap compression system . Compatibility: Wahoo ELEMNT, Wahoo Roam, Wahoo Bolt, Wahoo MINI. CNC-machined aluminum for low weight and strength. Made in the USA with a lifetime warranty