Gebla Rohbox ShimKit A21 for Shimano GRX810 / GRX600 / GRX400 / 105 ST-R7020

Modification kit for Shimano shift-brake levers to use with a Rohbox to allow shifting of Rohloff gears.

For use with Shimano GRX810 / GRX600 / GRX400 / 105 ST-R7020 shift-brake levers. You may require the ShimKit Crown Tool to fit these (available seperately, see links below).

NOTE: This is for compatible Shimano levers with Production Year 2021 and before (right hand thread on right side, left hand thread on left side). Please refer to Gebla's website to see how to determine your STI's levers Year of Production. Minor changes were made to the levers that determine which specific Gebla ShimKit you require (A22 or A21). It is recommended you visit Gebla's website for fitting instructions.