With the Excentriker we have another nice innovation part for your bike. An eccentric bottom bracket for standard frames! Fix to standard frames and brings the possibility to adjust the chain tension (for gear hubs and single speed). So you don’t need a chain tensioner, adjustable drop outs or tandem bottom bracket any more. The Excentriker is easy to install and brings you a smooth optic on your bike! Fit with single speed cranks with 24mm axle.
Runs on two 6805 bearings. 37mm OD - 25mm ID - 7mm Width

Specification

Downloads

Download File

Product Reviews (1)

Overall Product Rating 4 / 5

Second Exzentriker

By Peter Webber

27 Oct 2016

4 / 5

I recommend this product

ConsPrice, a bit fiddly to adjust

ProsEasily adapted to most frames

We have just purchased our second exzentriker. This is as a backup for a year long trip we are about to undertake. The current exzentriker has done over 5000km & we have had no problems to date with the product.

Questions & Answers (8)

How much adjustment available?

By Ian Ezzi

18 Jan 2019

Hi, just considering using this to adjust BB drop on a frame, how much adjustment appears to be available? I'm guessing you can rotate the bearings so they sit at the bottom of the BB shell, plus the thickness of the threaded portion of the cup?

Thanks

SJS Customer Service:

Based on manufacturer website:
"Deviation: +/- 3 mm; plus halflink. Halflink fits 7spd, 8spd and 9spd chains. Halflink width w/o bolt 6.6mm"
This portion with a thread on it is 15mm.
Hope that helps.
Thanks

geared bike just to raise BB height

By Ruth

11 Jan 2019

hi can i use this on a geared (xt 1x11) bike (surly krampus) to raise or lower my bottom bracket height?
thanks

SJS Customer Service:

This is not the intended design, but I cannot see why it would not work!

Thanks - 14/01/19

Will it work on Marin San Rafael?

By David Callow

30 Dec 2017

Rohloff fitted and currently using Rohloff tensioner. Standard square taper bottom bracket with 46 tooth chainwheel. Bottom bracket shell too small for usual EBB. Before Rohloff fitted it had an SR Suntour triple crankset. The single chainwheel was a straight swap.

SJS Customer Service:

Hi there,

This should work but we have not tested it ourselves so there may be some unforeseen compatibility issues.

Thanks

Inside BB Protection

By Rod Butler

07 Oct 2017

Is there a plastic open ended cup that fits both inside rims of the EBB to prevent moisture build up in side the BB housing?
I think Shimano has some thing like it.
If not are they available as a spare part in a similar size BB?

SJS Customer Service:

Hi,

Unfortunately it does not come with a centre tube like the Shimano bottom brackets. We don't know of any that would be compatible with this BB either I'm afraid.

Thanks.

Question Re Rohloff Chainline

By John Arnott

27 Mar 2017

Hi there - I am very keen to explore the purchase of an exentriker for a Rohloff hub that i am using. I have a question about achieving a 57mm chain-line - Could you suggest what crankset i might be able to couple to achieve a 57mm chainline?

SJS Customer Service:

Hi,

We don't have exact chainline measurements for most cranksets but we do know that if you wanted to fit a Shimano MTB style crankset that with the ring in the outer position then this would give a suitable chainline.

Thanks.

Do You Also Sells The Tool To Install This Ebb?

By Otep

14 Apr 2015

SJS Customer Service:

Hi,

We do indeed sell the tool that goes with this bottom bracket, it is SJSC part 20287.

Thanks.

Type Of Crankset?

By Mark B

10 Mar 2015

What would you recommend as a single chainwheel (say 46 tooth) crankset to go with this, probably to run with an SA S3X rear hub (120mm) on a frame with standard British Standard BB shell?. Do you need to buy the bearings as an extra item?

SJS Customer Service:

Hi,

Any crankset with a 24mm diameter spindle will be suitable for use with this, so any Shimano set and any Shimano compatible cranksets that are designed for use with external bearings. The bearings are already included in this product so there is no need to purchase them separately.

Thanks.

Shell Size

By Andrew

23 Feb 2015

I am thinking of fitting this to a Genesis Croix de Fer 2015 frame which has a standard 68mm BB shell with a view to fitting a Rohloff hub. Do you think this will fit a standard 68mm British thread BB shell? Also the Rohloff needs a dropout spacing of 145mm?
Thanks,
Andrew

SJS Customer Service:

Hi

Yes the Excentriker will fit a bottom bracket shell of 68mm however all Rohloff hubs are spaced to 135mm only, we wouldn't be able to advise as to whether you would be able to have the frame adapted that would have to be something that you would need to speak to a frame builder about.

Regards, Jamie