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Description
Gebla Rohbox ShimKit A21A modification kit that allows you to use Shimano Hydraulic drop bar shifters to operate the Rohloff Speed Hub. The Gebla Shimkit is a unique and creative way to modify drop bar Shimano Road or gravel shifters to operate a Rohloff internal geared hub. Previous versions of the Gebla only worked with Sram Double tap shifters, so enabling Shimano compatibility is a huge win. It creates by far the neatest way to run a Rohloff Hub and drop handlebars.
A modification kit that allows you to use Shimano Hydraulic drop bar shifters to operate the Rohloff Speed Hub.
The Gebla Shimkit is a unique and creative way to modify drop bar Shimano Road or gravel shifters to operate a Rohloff internal geared hub.
Previous versions of the Gebla only worked with Sram Double tap shifters, so enabling Shimano compatibility is a huge win.
It creates by far the neatest way to run a Rohloff Hub and drop handlebars.
Requires a Gebla Rohlbox as well. As a shop we specialise in Rohloff and Gebla products so feel free to reach out with any questions or for help.
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.
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.
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Exchange/Return Notes
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4.5 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
Easy install
🔥🔥🔥
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Reviewed in the United States on August 20, 2025
★★★★★ 5
Great quality
Perfect
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Reviewed in the United States on February 3, 2025
★★★★★ 5
Easy install
Color: Single Slat Gloss Black, Size: 2012-2018 F30, Color: Single Slat Gloss Black, Size: 2012-2018 F30
Fixed my busted grille and gave the car a newer look. 2014 320i
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Direct Fit and good quality
Color: Single Slat Gloss Black, Size: 2002-2005 E46
For anyone that has owned an E46 knows that even the stock kidney grills are brittle plastic. This aftermarket is about the same quality as stock. It is a direct fit and has the clips where they are supposed to be to keep them in place. The look is also pretty nice. This one is all black and actually looks nice on my black E46. I would recommend especially for the price and shipping was fast.
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Reviewed in the United States on August 29, 2025
★★★★★ 5
Easy install
Color: Single Slat Gloss Black, Size: 2023+G20
Fits well. Made of plastic but very easy install.
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Reviewed in the United States on March 19, 2026