RFloXa Steering Stem Lock

The RFloXa steering stem lock clamps the steering stem in the head tube and holds the headset bearings at the right preload. It fits the Surron LBX, the Talaria X3, MX3 and MX4, and the E-Ride Pro SS 2.0 and 3.0.

A stem lock that has backed off lets the bearings run loose, which shows up as a knock through the bars under braking and marks the bearing races while you ride on it. Replacing it is the cheap half of a headset job.