Gebla Rohbox ShimKit A22 for Shimano GRX810 / GRX600 / GRX400 / 105 ST-R7020

I recommend this product

For those of us who want to use drop bars with a Rohloff hub this is a very simple but effective piece of kit to allow the use of Shimano drop bar levers to change gear (with a Rohbox). Installation is really simple (the separate crown tool is helpful but not essential) with the only tricky bit feeding the shift cable through the lever, but that is a Shimano design issue and nothing to do with the ShimKit. When the bike was in the work stand I was a bit worried by the amount of lever throw required to make a shift, along with the heavy feel of the system, but when out on the road neither issue is noticeable. The only minor quibble I have is that the cost is quite high for what it is, but that's probably to be expected for what is quite a niche, low production volume product. Whilst slightly pricey, given the simplicity of the design I can't imagine a situation where it will ever need replacing, so it should just be a one-off cost.