Home > Transmission > Bottom Brackets > Threaded Cups External Bearing

KCNC BB30 Bottom Bracket to Shimano Adaptor - Road 68mm

Customer Reviews (2)

4 / 5| Write your review

£39.99

was

View supersize image

Colour

£39.99 was

Manufacturer :

SJS Cycles part number :

Manufacturer part number :

Details

Adaptor cups and bearings for the BB30 bottom bracket shell - to allow the use of standard non-BB30 cranks. To fit road frames width 68 mm shells, compatible with Shimano 24 mm cranks and KCNC K-Type cranks (without insert). Full stainless steel bearings.

- Weight: 122g

Product Reviews (2)

Questions & Answers (13) Q & A

Specification

Downloads

Download File

Product Reviews (2)

Overall Product Rating 4 / 5

Fragile Shims

By Neil

15 Feb 2018

3 / 5

ConsFragile shims

ProsStable, creak free bearings.

Purchased to replace a similar Rotor BB30 to 24mm adaptor hoping there would not be the same fragile plastic shim issue, unfortunately not. The plastic shims are exceedingly fragile, two shattered while fitting the crankset so it was lucky there were two spares in the box. Nowhere seems to sell replacements so next time I need to service, if either shim breaks it will be back to BB30 or another complete adaptor.

By Gary

21 Sep 2017

5 / 5

I recommend this product

ConsNone.

ProsGreat prices great product.

Great product does exactly what it says on the tin.
Really easy to fit.
Definitely would recommend it and a lot cheaper than some other brands.
Just hope it wears well.

Questions & Answers (13)

diameter of the the BB insert

By Alan

17 Sep 2021

what is the diameter of the cylinder in the the centre - my Felt F1 has a small diameter in the centre of the BB shell - (build up of carbon to stiffen BB)

SJS Customer Service:

Thank you for your enquiry, it is 35mm

WD 17/09/21

Creaking

By Evan Stuber

17 Mar 2018

Bought one of these a couple of months back and already getting a load of creaking. Is there a way to stop this?

SJS Customer Service:

Hi there,

It is worth removing, cleaning, regreasing and refitting. If you are using a carbon frame, it is worth checking, systematically, every single part on the bike. Things like mech hanger bolts being slightly loose can make a noise than sounds like the bottom bracket is toast!

Thanks.

Can this be used with a 2013 Canondale CAADX?

By Anonymous

15 Mar 2018

I'm trying to convert my CAADX from FSA Cranks to Shimano Cranks(ultegra,105). Will this product do what I need?

SJS Customer Service:

Hi there,

This may fit, from experience in many Cannondales the cable routing can cause issues. We would recommend heading to your local Cannondale dealer.

Thanks

is this suitable for a mtb with 68mm bottom bracket

By andrew

05 Feb 2018

SJS Customer Service:

Hi,

Unfortunately not, this bottom bracket is designed to convert BB30 bottom bracket shells for use with 68mm road chainsets.

Thanks.

can i use pus this bb on plastic cups

By celilcetiner

11 Jan 2018

i have pf 30 plastic cups on bb came with bike. bb diameter is 46 but with cups on it inner diameter is 42. do i have to remove the plastic cups ? or can i put the kcnc bb on plastic cups ?

SJS Customer Service:

Hi there,

We would need to see the bike in question to confirm this, if they are suitable reducer cups then it will fit fine. Be aware, there is a highly likelihood of a noisy bottom bracket with multiple adapters.

Thanks

Does this adapt a BB30 frame for a Shimano 105 crankset?

By Evan Stuber

14 Dec 2017

SJS Customer Service:

Hi there,

Yes this will adapt BB30 to Shimano fit.

Thanks

Does it come with 'top hat' additional shims?

By Dave

10 Sep 2017

Can I confirm that the bottom bracket comes with a spare set of additional 'top hat' crank shims?

SJS Customer Service:

Hi,

You are correct, the bottom bracket does come with a spare set of the red crank shims.

Thanks.

What Is The Diameter Of The Centre

By Magnus

11 Apr 2017

Can you tell me what the diameter of the centre is?
I want to fit this to a Felt F1 FRD. The frame doesn't have a clip inside it but a slightly smaller diameter so a praxis bb doesn't fit.

SJS Customer Service:

Hi the diameter of the centre is 35mm

Can You Get This Adapter To Fit 73Mm Bb A Cannondale Supersix Evo

By charlie

30 Jan 2017

SJS Customer Service:

Hi,

This bottom bracket is designed for 68mm cranks only, if you definitely require a 73mm option then the MTB version of this bottom bracket will be suitable. These are SJSC part number 33010.

Thanks.

Installation

By Tim

25 Sep 2016

Should this be installed with grease, or not necessary because of the o-rings?
How (and how well) are the bearings protected from dirt and water entry?

SJS Customer Service:

Hi,

These bottom brackets do not need to be installed with grease, they can be fitted as they come. The bearings are protected by an additional external seal.

Thanks.

Can You Change The Bearings On Kcnc Bb30 Adapter

By Wyndham Davies

29 Jun 2016

None

SJS Customer Service:

Hi,

You can indeed change the bearings in this bottom bracket adaptor. The old ones can be pressed out and the new ones just need to be pressed in.

Thanks.

Bb30 Frame And Hollowtech 2 Crank

By Elliot Thomazini

02 Jun 2016

i have a bb30 frame and a shimano ultegra crank. is this what i need to use that crank along with the frame?

SJS Customer Service:

Hi,

This would indeed be the correct bottom bracket adapter to use your Shimano cranks in your BB30 frame.

Thanks.

What Is The Os Diameter 42Mm Or Or46Mm ?

By Mike

15 Jun 2014

SJS Customer Service:

Hi,

This bottom bracket adapter has an outer diameter of 42mm.

Thanks.