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Genetic Karyotype JIS Sealed Bearing Square Taper Bottom Bracket - 68 mm

Customer Reviews (1)
3 / 5| Write your review
£34.99
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£34.99 Please note this product has selling restrictions to your country. was
Manufacturer : 
SJS Cycles part number : 
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Details
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Product Reviews (1)
Questions & Answers (0) Q & A
Details
Available in;
- 68 x 103 mm
- 68 x 107 mm
- 68 x 110 mm

- High quality traditional style Cr-Mo JIS square axle BB with precision cartridge bearings lightweight forged alloy cups and carbon fibre spacer
- Supplied with hex cap type bolts
- A great choice for that ultimate lightweight fixie machine
- Weight: 230 g

Requires a Shimano type splined bottom bracket removal tool. (Shimano's own is SJSC part #858)
Specification
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Product Reviews (1)
Overall Product Rating 3 / 5
Nice, But Taper Is Quite Rough,
By
15 May 2013
3 / 5
Consrough taper
Proslight, smooth
Firstly, I'm not sure why this BB is described as for "that ultimate fixie machine", I can't see anything about the BB that makes it suited to fixed gear riding (what would that even mean?)

Haven't fitted mine yet. Seems reasonably well made. The machining on the flats of the taper is very rough. I'm not sure if this will cause a problem in practice but I've never seen such rough machining on a BB before. Axle spins smoothly under hand pressure. The design is a fairly standard sort of cartridge BB type design where you can pull off the left side cup to see the sealed bearings. It doesn't look like it would be terribly difficult to replace the bearings.

The axle is hollow which is nice. At first I imagined this would b a rebadged Token BB but holding the two side by side it is clear they are a different design.

I suppose time will tell how this BB holds up.
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