Handlebar shim alloy 2.0 Adapter shim for stem

The SQlab Adapter Sleeve was developed to securely fit 27.0 mm handlebars into 31.8 mm 2.0 stems or 31.8 mm handlebars into 35.0 mm 2.0 stems. Made from high-quality aluminum with a silver finish, it offers a precise fit while remaining lightweight and durable. The sleeve enables the use of proven handlebars with smaller clamp diameters in modern oversize stems – supporting a customized and ergonomically optimized cockpit setup. Note: Using the adapter sleeve reduces the ASTM category rating of the combined handlebar setup. The resulting combination complies with ASTM F2043-13 / DIN EN 17406, Category 2 – suitable for road use and light MTB terrain. Key Features: Allows connection of 27.0 mm handlebars to 31.8 mm 2.0 stems or 31.8 mm handlebars to 35.0 mm 2.0 stems. Made from high-quality aluminum. Compatible with proven SQlab handlebars precision fit for secure installation. Meets ASTM Category 5 (ASTM F2043-13 / DIN EN 17406) as the sleeve itself complies with ASTM 5.