Middleburn RS7 Mono X1 Crank Spider: 104mm - 50mm Chainline (New, take off)
This 4 bolt, 104mm BCD is designed for one-by and singlespeed setups on the Middleburn RS7 crank arms (and probably Middleburn's other crank arms, they're all the same interface. The difference seems to be the chainline the spider produces on a given crank.
New, take off. Ridden just a few miles, perfect aside from the slightest marks from the lockring.
- Model: SP-SQ-104-50MM-X1
- BCD: 104mm