Put a dropper seat in my gravel bike
"Love it I was able to install a dropper seat in my Trek Checkpoint 2023 gravel bike"
Free tracked shipping on orders over £99, duty-free from our UK warehouse.
These clamps/adapters allow you to mount your OneUp Components Dropper Remote (V2 or V3) to either Shimano or SRAM brake clamps, flat / MTB bars (22.2 Clamp), or drop bars (31.8 clamp).
The 22.2 Flat Bar Clamp and the Drop Bar Clamp are stand-alone clamps allowing the remote to mount/attach to your bars without attaching to a pre-existing clamp or brake mount.
The SRAM MMX, Shimano I-SPEC EV, and the I-SPEC II Adapters are not clamps. These adapters allow the remote body to mount to the pre-existing clamp or brake mount on the bike.
Click on the option that most closely resembles yours.
This gives a cleaner cockpit set up
Most MMX compatible brakes will have a clamp that looks like this:
To determine this, first find the model number on your brake lever.
It will start with BL-MXXXX and is normally located on the bottom of the lever body.
Must be one of the following:
Sram Red 11spd Hydro R
Sram Force 11spd Hydro R
Sram Rival 11spd Hydro R
Sram Apex 11spd Hydro R
Our SRAM MMX Adapter will allow you to mount the V3 Remote directly to your SRAM brakes.
We recommend
SRAM MMX Adapter
£14.99
Our I-SPEC EV Adapter will allow you to mount our V3 Remote directly to your Shimano brakes
We recommend
I-SPEC EV Adapter
£14.99
Our I-SPEC II Adapter will allow you to mount our V3 Remote directly to your Shimano brakes
We recommend
I-SPEC-II Adapter
£14.99
Our 22.2mm Clamp will allow you to mount our V3 Remote onto your bars.
If your bars say 31.8mm or 35mm on them, this is still the correct option. All mountain bike bars taper from the stem clamp area to where the brake and shifter levers mount.
We recommend
22.2 Flat Bar Clamp
£14.99
Our 31.8mm Clamp will allow you to mount our V3 Remote to your drop bars.
You will need to mount it close to the stem for best positioning.
We recommend
Drop Bar Clamp
£14.99
For most cases, our 22.2mm Clamp will work for you.
If your brake manufacturer offers an adapter that works for MMX, it should work with our remote.
If you have a 2X or 3X drivetrain, or a suspension lockout remote on the left side of your bars, you will likely be better off using an overbar style remote.
We recommend
22.2 Flat Bar Clamp
£14.99
Our Drop Bar Paddle Remote will allow you to modify your SRAM 11 speed hydraulic system to work as a dropper remote. This results in a super clean set up, with easy adjustments.

For Hope brakes, you’ll need one of their Shifter-Mounts.
There’s a chart on the above linked page to help you figure out which you need for your levers.
Just choose the option that has MMX in the title and our remote will mount directly to it, no other parts needed.
For Hayes brakes, you will need to purchase an adaptor made by Hayes as they use a different interface at the brake mounts.
For A2/A4/T2/T4 brakes, you need the Hayes Peacemaker - Dominion to MatchMaker adaptor.
Our remote will then mount directly to that adaptor as it uses the SRAM MMX (Matchmaker) interface.
Depending on your cockpit set up, you might find the right side adaptor positions the remote in a better position (further inboard) than the left side adaptor.
For TRP brakes, you will need to purchase an adaptor made by TRP as they use a different interface at the brake mounts.
You can find all their different models here: TRP Integrated Shift Mounts
For DH-R EVO brakes, you need the HD-3.7 Left (I-SPEC II to MMX).
The I-SPEC II adaptor that we produce, does work, however it doesn’t have a retaining lip like the TRP version does. This means that when you loosen the brake clamp, the adaptor could slide out from underneath the clamp.
The newer PRO levers use a different adaptor: TRP PRO Evo X adaptors. The left side MMX adaptor will work with our remote.
Our remote will then mount to the TRP adaptor directly, no other parts required.
Orders over $99 ship for free and should arrive in 4–5 business days, once shipped.
Most orders ship within 24 hours or the next business day. Need it sooner? Upgrade to express shipping at checkout.
Return unused and unopened items within 30 days for a full refund—return shipping is free.
Orders are shipped duty and tariff free from our headquarters in Squamish, BC, Canada.
Learn more on our shipping and returns page.
Overall rating: 4.8461537 / 5 from 169 reviews.
The Dropper Remote Clamps & Adapters by OneUp Components are highly recommended for their ease of installation, perfect fit, and high-quality design. Customers praise the product for its durability and smooth operation, making it a reliable choice for mounting a OneUp Components Dropper Remote body (V2 or V3).
Review topics: ["fit","size","weight","issues","quality","feel","design","post","looks","improvement","customer service","price","grip","setup","service","works","clamp","install","dropper","lever","components","piece","adapter","adjustment","mount","set","travel","kit","tool","place"].
"Love it I was able to install a dropper seat in my Trek Checkpoint 2023 gravel bike"
— beth m. (5/5)
"Fantastique lors des randonnées en montagne"
— Michel D. (5/5)
"Great product!!! Works perfectly!"
— Douglas L. (4/5)
"Compared to the fox transfer post, this has been far more reliable with no sticking so far. This is after a little over 20 hours of ride time. Well worth the purchase"
— Gabriel L. (5/5)
"The One⬆️ dropper lever fit perfect on my Shimano Ispec ev brake lever with the adapter. Dropper lever feels solid and responsive."
— Doug M. (5/5)
"Diallllleeedd!! Great setup and package! Was able to add another 20mm drop on my Kenevo SL. Love One Up components - great quality and user friendly serviceability."
— Brian P. (5/5)
"Everything you need and nothing you don't, just thoughtfully designed parts that are simple and reliable."
— Carl A. (5/5)
"Top notch quality again from OneUp!"
— Josh K. (5/5)
"Great quality"
— Alibek K. (5/5)
"This in my opinion is the best droppers post. The only one that I will ever buy"
— Jim T. (5/5)
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