【Universal Compatibility】This adapter bar features a telescoping tube with an adjustable hook distance ranging from 23.6" to 31.4". It’s ideal for transporting bikes with unique frame designs, such as Women's Bikes, Low-Step or Step-Through Bikes, BMX Bikes, Kids' Bikes, Full-Suspension Mountain Bikes, Cruiser Bikes, Road Bikes, Folding Bikes, and E-Bikes. 【Heavy Duty Capacity】Our bike adapter bar features a top tube design that securely mounts your non-standard frame bikes, including heavier e-bikes, onto a mast-style hitch rack. With a 100 lbs weight capacity, you can confidently transport your bike, whether you're going on a mountain biking adventure or tackling tough trails. The adapter bar ensures your bike’s safety, so you can focus on enjoying the ride. 【Maximum Security】Our bicycle transfer lever comes with a built-in spring, allowing you to securely lock the tube at any length. The quick-install hooks with release buttons on both ends provide a secure fit for various bike types. The 1.50-inch diameter tube and anti-rotation mechanism enhance stability, keeping your bike steady during transport. This crossbar adapter ensures a customized, stable fit for a wide variety of bike frames, offering maximum security and reliability. 【Built for Durability】Made from strong steel, our bicycle crossbar offers outstanding durability and corrosion resistance, ensuring it performs reliably in all weather conditions, even during heavy-duty use. It delivers maximum strength while remaining lightweight, making it an ideal choice for all your cycling adventures. 【Scratch Protection】The molded rubber hooks on our bike adapter bar securely hold your seat post and handlebar stem, offering protection against scratches, impacts, and vibrations during your ride. Plus, our e-bike adapter comes with a 2-year warranty, giving you extra peace of mind and confidence in your purchase. YZONA Bike Rack Cross Bar, Adjustable 23.6"-31.4" Top Tube Adapter, Oversized Diameter Crossbar Fits E-Bikes/Women's/Low-Step/Step-Through/BMX/Kids'/Full-Suspension Mountain/Cruiser/Road/Folding Bike