Main cap bearing holders and bolts.
Replacement main cap bearing holder for when you have done one grind too many... Each set includes two bearing holders, four nuts, four bolts and four washers. Note these bearing holders are intended for use with 40mm diameter bearings. If you want to use 42mm bearings (ISIS bearings) then we suggest Nimbus machined bearing holders.
If you are building a frame from scratch, please order two sets. Weld one to the frame end and use the other set to bolt into it.