Brompton Chainring Bolts for Detachable Chainring - Pack of 5

£13.00 Please note this product has selling restrictions to your country. was
Manufacturer : 
SJS Cycles part number : 
Manufacturer part number : 
Replacment chainring bolts for use with new post-2013 spider chainsets.

Weight: 18g .

Please note Brompton have selling restrictions to some countries who have their own dealers. If you are unsure please contact our sales team.
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Questions & Answers (2) Q & A
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By Fields Electric
17 Jan 2024
5 / 5
I recommend this product
ProsBrompton High quality
I bought these as I lost one. I have replaced it and used locking fluid on the rest. Which I have done on some of the other bolts on the bicycle.
By Anonymous
07 Nov 2017
5 / 5
I recommend this product
ProsUsual Brompton high quality
Having had two bolts fall out and got lost while on a Brompton cycle ride. (my own fault for not checking them regularly) I purchased these to carry as spares.
Easy and fast replacement
By Antonio Moya
19 Jul 2017
5 / 5
I recommend this product
ConsExclusivity and propietary design for Brompton
ProsOriginal Parts
They fitted in my Brompton Chainring like a dream, perfect, I lost two bolts and I decided to replace all, it took me less than five minutes
Questions & Answers (2)
Thread type
30 Oct 2019
Hi, What's the thread on the hidden bolt please?... I'm looking to put a Campagnolo 5-arm-pattern Record Ultratorque crank on my Brompton Nickel and I'm looking for options to fit single ring chainrings to the Campy arms... and the hidden bolt on Campy carbon arms is M8x0.75 (thanks a bunch Campagnolo)... I've got the kit to make my own screws if I have to, but having had to make a set when I put a Centaur Ultratorque crank in my H11 I know it would be easier to just buy them rather than spend a day bent over a lathe making three scrap screws for each good one I managed...
Hi, it is M8 x 0.75. Thanks 31/10/2019
Chainring bolt length
30 Sep 2017
There appears to be 2 different lengths of chainring bolt length available - 4.9mm and 6.4mm. Do both fit a 2017 Brompton? What length are these? Thanks.

If they are produced by Brompton they will fit one. These bolts in particular are 9mm in length except for the long one that can be seen in the centre of the photo which is 14mm.