Jtek Double Control Brake Cable Splitter

Customer Reviews (3)
4.7 / 5| Write your review
£39.99 Please note this product has selling restrictions to your country. was
Manufacturer : 
SJS Cycles part number : 
Manufacturer part number : 
Also known as a cable doubler

This is a double input, single output, DoubleControl cable splitter. It weighs just 12 grams and is super small and compact. It's versatile in that it can be mounted in a variety of locations including: inline, on top of the brake calliper, or at cable stop locations. It requires no internal springs and allows both brake levers to operate totally independent of each other while maintaining the same feel and function of a single brake lever system.

Please note that this model is designed to only be installed with road style caliper, cantilever or disc brakes which use shorter cable pull operation and is NOT designed for mountain bike style V or disc brakes, which will require our longer version (item # 19040).

- Maximum cable travel 12mm
- Offers clean cable routing.
- Great for team time trials and holding tight drafting situations.
- Ideal for triathlons where position controls is critical to avoid drafting situations.
- Huge benefits for racing technical courses and more efficient corner braking.
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Product Reviews (3)
Questions & Answers (8) Q & A
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Product Reviews (3)
Overall Product Rating 4.7 / 5
Great problem solver!
By Erik
19 Nov 2017
5 / 5
I recommend this product
ProsWorks well, small, tidy.
I use this to control a front caliper brake from both left and right drop bar levers on a fixed gear bicycle. Build quality and finish seems excellent and installation was straightforward with clear included instructions.
By Andrew kim
27 Jul 2016
4 / 5
I recommend this product
One Brake Two Levers
By mr_road
19 Sep 2011
5 / 5
I recommend this product
Prossmall, light, well engineered
I had been looking for ages for a product to solve this issue, and this not only solves the problem, but does so elegantly.
Questions & Answers (8)
Mounting position on bike?
21 May 2022
I will be actuating Paul Klamper disc brake callipers with SRAM Force levers on a WIDE gravel bar setup and want to employ the use of TT bars as an alternative position when riding long distances. Ideally these TT bars will have bar end levers so I can brake from both positions on the bike. This cable junction looks like a great solution to this but as I want to keep the cable-run along the frame to a minimum (I’ll be running a dropper post too), I’d like these junctions to perform their job at around the stem position. Is this possible?

Many thanks
Please email this over to [email protected] so we can best reply to this,

How do I specify colour choice with the part?
11 Jun 2019
We do not have any colour choices with this item.

Thanks - 11/06/19
How is the feel of the brakes after installation? Don't they become a bit too spongy?
27 Aug 2018
I am planning to completely revamp my current cockpit on my tourer/commuter. I want to go with Velo Orange Crazy Bar, so I would like to have secondary brake levers installed on the bullhorn part of the handlebars to have the ability to brake in more aero position. I am however worried that the adaptors would compromise the breaking power. Could your ensure me that it would not be the case and from both secondary and primary brake levers I would have similar ability to stop my bicycle, please?
Hi, the brakes will not feel any different to a single lever setup with this device. Thanks
Do This One And #19040 Come With A Spacer For Mounting Directly On Caliper Brake?
19 Jan 2017

This product (19041) comes with a spacer to allow for fitting directly onto a caliper brake. Please note the longer version (SJSC part 19040) is not compatible with caliper brakes.

Would This Work For Gears Too?
10 Jul 2016
I have aero bars on my road bike and would like to fit shifters on the bar ends, but also keep the existing main shifters on the handlebars.
Hi you need Jtek DoubleControl L Cable Doubler #19040
Does This Work On Road Bike?
20 Dec 2015

This is the correct version for use with a road bike.

Will This Work For Cable Disc Brakes
12 Aug 2015
I am currently running Shimano Ultegra 6870 STI levers with TRP Spyre mechanical disc brakes.
Would I use this, S, or the L model.
Hi, the S model provides 12mm of pull whilst the L model has 26mm of pull available. We don't stock the TRP Spyre disc brakes so you will need to check how much pull is required to engage the caliper & then select the most appropriate model. Regards
Will This Work With V Brake?
27 Aug 2014
Or is there another product that will do the same job? Note the comment about road caliper style brakes. Thanks

No but you can use the Jtek DoubleControl L (long) for brakes that require a longer cable pull. Our part number 19040.