. . Self-adjusting jaws automatically wrap around the downtube for precise frame hold. . Large wheel trays hold your bike securely during transit. . Lock included to secure the bike to the carrier. . Mounts directly to most factory and aftermarket rack systems (max. 3.5 crossbar diameter). . Fits bike frames up to 3 3/8 in diameter and tires up to 2.6 wide. . . . . . This product will be shipped directly from Sportrack 770527500795 31613800006 SR4885