Laser-cut for precision shape and fit. Hardest wearing rails in the world. Increased flexibility in the bar body. Nose side plates made of hardened Titanium alloy steel. During hardening, the nose side plates are injected with Carbon Nitride, which guarantees that Pro-TopT is the hardest-wearing replaceable sprocket nose in the world.
Nose self-locks over a solid steel web on the bar body, held firmly together by three high-tensile rivets. Super-tough, high-tech alloy sprocket glides on precision Swiss bearings.