Co-Motion self-locking eccentric for standard 68mm English threaded bottom brackets. Designed and machined in-house, this is our standard eccentric used on all Rohloff equipped models and most Co-Motion tandems. Fits all Co-Motion tandems with 66mm wide / 54mm diameter frame shells - excluding split frame shells with external pinch bolts.
6061 aluminum body, anodized Black
68mm bottom bracket width
Outside diameter is 2 1/8" (54mm)
Uses 4mm - Grade 8 allen bolts
Self-locking plates are heat-treated stainless steel