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Joseph Kuosac Crankset for Brompton Bikes - Black

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£114.99

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Manufacturer :

SJS Cycles part number :

Manufacturer part number :

Details

Crank arms for Joseph Kuosac Crankset for use with Bromptons.

Arm length choice from 155mm to 195mm
Made from 7075 Aluminium
Weight: 420g (155mm) , 490g (160mm) , 480g (180mm)

To be used with:
Chainring/Spider - #46137T44
Bottom Bracket - #46138 OR #46139

Please note: we have experenced clearance issues on some bikes when fitting this cranks, they can catch the rear triangle when folded, to avoid issues it is best to space the bottom bracket out with SJS cycles part Number 17701S1.5

In most cases 3mm is enough to provide clearance.

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Joseph Kuosac Standard 3 Bearing ISIS Bottom Bracket for Bromptons - 118 mm £34.99 Inc VAT Quick view

Joseph Kuosac Special Heavy Duty 4 Bearing ISIS Bottom Bracket for Bromptons - 118 mm £49.99 Inc VAT Quick view

Brompton Spider Crankset - Black - 54T £90 Inc VAT Quick view

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Questions & Answers (8)

Can I use this with a B75

By Meera

20 Aug 2021

Hi can these just go onto the existing chain ring on a B75 without replacing any other part? Do you need a special tool to do this?
Thanks

SJS Customer Service:

No, you will need to change the bottom bracket- SJS part: 46138 / 46139 and use these chainrings- SJS part: 46137T44

JK 20.08.21

what other chainrings can i fit with this on my brompton?

By pearly

10 Mar 2021

I am interested in a shorter crank arm length for my brompton but am not too keen with JK's BB and Chainring. Is it possible to use others?

SJS Customer Service:

Suitable rings / spider are SJS Cycles part number : 46137; you need to use the JK spider but can use another ring. 130mm BCD.

Thanks

I have already JK crankset 54/160, any suggest for comfy crank arm to change it ? 170 or 175? Thanks

By Nurcahya Ardian Bramantha

31 Oct 2020

SJS Customer Service:

Hello, I'm afraid you would need a professional bike fit to know what crank length will be more comfortable for you.

JK 02.11.20

is there a special tool to torque the lock ring up to 40nm

By peter gallon

20 May 2020

SJS Customer Service:

Hi, yes the IceToolz HollowTech II / Ultra-Torque / Howitzer Bottom Bracket Tool our part 23833 fits well. You will also need a torque wrench. Thanks

Joseph Kuosac cranks for Bosch active line plus

By Peter van Wieringen

14 Apr 2019

Hello, I have a question about the Joseph Kuosac Brompton crankset 185 or 190mm. Do these cranks fit on a Bosch Active line plus E-bike motor?

Regards, Peter van Wieringen
The Netherlands

SJS Customer Service:

We have no direct experience of this, if the BB is ISIS standard then yes they would possibly fit.

Thanks - 15/04/19

Can the lock ring be bought separately?

By Malen

06 Dec 2018

SJS Customer Service:

We do not list it separately, we may be able to get hold of it from JK if you wanted to contact us directly.

Thanks - 07/12/18

Is there any weight saving compared to stock?

By Florin

02 Dec 2018

Thanks

SJS Customer Service:

Unfortunately, especially taking into account the BB, there is not weight saving.

Thanks - 03/12/18

Tool for securing lockring of JK crankset

By Chris

29 Jul 2018

Hello,
I try to secure the lockring of the JK crankset - but neither bike repair shops nor me have the correct tool. Could you advice which tool (maybe from Parktool) I have to purchase, please?

Thanks!

Best,
Chris

SJS Customer Service:

Hi there,

You can use either - SJS Cycles part number : 37714 or SJS Cycles part number : 46845

Thanks