DMR - CRISIS/EXTYPE LOCK RING

Heavy duty, 6.3mm thick, single chainrings. The DMR Spline fit chain disc is great for BSX and Downhill, or any other single chainring set up.

These spline fit chainrings are designed for the DMR MK3 Chieftain and CRISIS cranks and use tough splines, not a single drive bolt, to transfer the power. Spline Drive rings lock to the crank using a Shimano pattern lock ring and spring clip.

The 36t and 38t chainrings are drilled to take the DMR Sideplate and a 28t chainring is available for street and park use. Designed to runs with geared chains.