The Arch MK4 LTD wheels combine Stan’s flagship MK4 rim design with the robust E-Sync hub. For a limited time, the MK4 LTD is a performance wheelset at an incredible price point! Laced with premium Sapim Race spokes and brass nipples laced to the extra-durable E-sync hub. Featuring chromoly steel axles and double row Enduro bearings, special heat treated steel ratchet rings, and a pawl design that reduces stress on freehub and bearings, making it the perfect choice for traditional and e-bike use.