AeroCoach ARC chainring bolt covers

Description

You can use the 3d printed ARC bolt covers to smoothen the transition between aftermarket chainrings and your Shimano cranks. Mount your standard chainring bolts (5mm hex bolt) as normal and press the bolt covers into place by hand.  The covers are specific to each location on the crankarm. They will not snap into place if you try to press them in an incorrect position.

If you are looking for an alternative to the ARC chainring bolt covers, have a look at the CNC machined R9100 bolt kit by TA Specialites.

For fitting advice regarding your optimal gearing, check out our consulting service for an in depth analysis, or join the Rony Kuba Discord group for regular updates on the topic of bike fit and TT bike optimisation.