Thorn Accessory Bar MK2 T Shaped 105 mm Extension - 25.4 mm

Customer Reviews (7)
4 / 5| Write your review
£19.99 Please note this product has selling restrictions to your country. was
Manufacturer : 
SJS Cycles part number : 
Manufacturer part number : 
Mounts to 1 1/8inch steerer tube for lights, computers etc. A really useful T shaped bar for lights and computers when handlebar space is at a premium.
Perfect for mounting light/computer brackets when using a drop bar set up, it goes in place of a headset spacer.


Steerer tube space needed - 27mm
Extension 105mm
Bar width 150mm
Bar diameter 25.4mm
Degree - 12

Single clamp allen key bolt at rear, hard black finish.

Weight - 130 grams.
Product Reviews (7)
Questions & Answers (7) Q & A
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Product Reviews (7)
Overall Product Rating 4 / 5
Good for mounting bar bag
By Mark
04 Nov 2023
4 / 5
I recommend this product
ConsNeeded to file
ProsWorks well
Fits steerer size well, just needed to file the welds so that it fits flush to spacers.
By Adam Macer
28 Sep 2023
3 / 5
I recommend this product
..that it's only 150mm wide - I need 175mm minimum for an Ortlieb Handlebar Pack.. Suggestion: Make it 200mm so people can cut to the length they need!
sloppy weld means I'll have to file it.
By Anonymous
19 Jun 2021
2 / 5
I recommend this product
the weld onto the part that fits over the steerer is a bit messy. It means the stem (or spacer) won't sit flat. I'll have to file it down. It's alloy so I suppose not a big deal, but annoying.
Used for Ortlieb bar bag. Fitted well, seems strong.
By Matthew Young
13 May 2020
5 / 5
I recommend this product
ProsLight. strong, good value
Used for mounting Ortlieb bar bag on Thorn Nomad. Fitted well, seems strong. Positions bag just low enough to allow a bike light to be mounted to the handlebars to shine across the top of it - the bike has about 60mm of spacer height between the stem and the headset. Hope this helps.
By Sigitas
21 Sep 2019
5 / 5
I recommend this product
It fits to my bike very well. I am fully satisfied.
Very good
By Gareth
19 Oct 2018
4 / 5
I recommend this product
ConsInterferes with cable for front brakes needs quite a lot of space on the steererer tube
Useful for mounting handle bar bag, particularly if you need space on the handle bars
Perfect For My Needs
By Brian Baker
15 Dec 2016
5 / 5
I recommend this product
ProsPerfect size and shape, high quality, lightweight.
This is exactly what I needed to properly mount my Ortlieb Ultimate6 on the front of my ElliptiGO.
Questions & Answers (7)
shipping costs
20 Apr 2020
I'd like to buy the Thorn Accessory Bar MK2 T Shaped 105 mm Extension - 25.4 mm. What are the costs for shipping to the Netherlans?
Add the item to your basket, go to checkout, it will tell you before you have to commit to buy
Can it be used with a 1" steerer? Do you stock shims/spacers?
13 Apr 2020
Hi, yes you need a Stem Shim for 1 Inch Fork to 1 1/8 Inch Stem our part 24400. Thanks 14/04/2020
extension bar diameter
19 Jul 2018
Would the extension bar be 22.2mm diameter. I have asked a similar question about the silver one but if this one is the same apart for the front bar diameter I would prefer the black colour.
And presumaby 0 degrees translates to it being at right angles to the steerer tube.
I would cut the top bar off and fit it sideways to take a Rohloff changer if possible.
Yes the extension bar is 22.2mm.
The 0 degrees means it will be at 90 degrees to the steerer tube,.

Will this fit a trek hybrid?
29 Jun 2018
As long as you have 27mm of spacers you can remove from below the stem and its 1.1/8th" steerer tube, yes.

What'S The Height Of The Steerer Tube Section?
21 Jun 2016
Hi, I have limited space available on the steerer tube (2 x 10 mm spacer) and I'm wondering whether the extension bar clamp will fit

The clamp is 27mm deep so will be too large to replace just your two 10mm spacers I'm afraid.

Thorn Accessory Bar Mk2 T Shaped 105 Mm Extension - 25.4 Mm - 0 Deg
13 May 2016
I am looking to add an extra bar to my stem to attach my Ortlieb Ultimate Handlebar bag so that I can free up space on my handlebar for lights and phone mount. I would like the bar to sit lower so that my light can shine over the handlebar bag. Would the Thorn Accessory Bar MKS T work for this application?

This MK2 T bar was designed almost entirely for that purpose so should work for exactly what you're trying to achieve.

Advantage Of 25.4 Diameter Compared To 22.2 Mm
08 May 2015
I'm trying to decide which to order. This will be used to mount an Ortlieb handlebar bag using a Rixen Kaul Klickfix mount.

For mounting a handlebar bag bracket we would recommend going with the 25.4mm size as it will allow for a better fitting. The 22.2mm size was release mainly to allow the fitting of a gear shifter to it.