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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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4.4 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
By far the best cooling pillow case I’ve bought highly recommend
Color: Blue, Size: Standard, Set name: Silky
Highly recommend best cooling pillow case I’ve bought very soft and comfortable seems to be made from good material as well
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Reviewed in the United States on May 3, 2026
★★★★★ 5
Soft and smooth cover
Color: Grey, Size: Body（20"X 54"）
This is a nice pillow cover overall. The fabric feels good and it's comfortable to sleep on, especially compared to a more basic cotton cover. It is maybe a little thinner than I expected, so if you want something thick and heavy this probably isn't that. But for a soft smooth cover that fits and feels decent, I think it's worth it. No major complaints from me after using it.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
These are the ones you want
Color: Grey, Size: Body（20"X 54"）
May need to iron them out when wash/dried but my old ones still look new- soft, cooling, smooth, color is still great. Not itchy or cheap feeling. Buying a new set for family.
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Very nice pillowcases
Color: Haze Blue, Size: 2 Pack Standard（20"X 26"）
Very pretty pillowcases. I washed them in cold water and dried them on low before using. They came out a little wrinkly but smoothed out on the pillow. The fabric is shiny and rich looking. It's not hot yet, here in Texas, but I am anticipating the coolness of these pillowcases to feel very nice. I appreciate the envelope closure. It gives it a finished look. There was no odd odor. They feel good like they'll last for a long time. I am a satisfied customer.
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Reviewed in the United States on April 8, 2026
★★★★★ 4
Body pillow covers
Color: White, Size: Body（20"X 54"）
I ordered the body pillow covers. They fit my pillow perfectly and the fabric is smooth and silky, but I did not find them cooling.
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Reviewed in the United States on June 1, 2026