IRD Quad QB75 JIS English Thread Sealed Cartridge Bottom Bracket 68 mm Shell

£57.99 Please note this product has selling restrictions to your country. was
Manufacturer : 
SJS Cycles part number : 
Manufacturer part number : 
- English threads
- Tange-Seiki sealed cartridge bearings
- JIS square taper CrMo spindle
- Aluminum cups and sleeve
- Average weight: 245g
- Made in Japan
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Questions & Answers (5) Q & A
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Questions & Answers (5)
What is the weight of the 110mm version? Thanks
04 Feb 2024
This is 258g SK 05/02/24
Can I use these for a vintage French tandem?
13 May 2020
Can I replace the English cups on both sides by French cups? And are the spindles symmetric or asymmetric for 122 and 127.5 sizes?
Yes, I'm pretty sure they are asymmetric RT
Is the right hand cup really fixed?
21 Feb 2020
In answering David Moorhouse on 27 Feb 2019, it was said that the right hand cup is fixed to the bottom bracket. But you sell (as SJS part 41029FRE) replacement cups for non-British threaded BB shells, which come as a pair. How is the right hand replacement cup installed if the original British cup is fixed?
It definitely cannot be removed by hand! We have not currently got the answer to the second part of your enquiry, but we will find out and let you know / update this.

Thanks - 21/02/20
Are both cups free
27 Feb 2019
Are both cups free or is the right side one bonded to the cartridge ?

Thank you for your enquiry. The left hand cup is loose whilst the right hand cup is fixed to the bottom bracket.

Kind Regards. 27/02/19
Which type of wrench tool fits to the toothing of the cups?
26 Mar 2018
You an use - SJS Cycles part number : 16507 or SJS Cycles part number : 14502