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Londonfixiebike Fixiebike CNC SS Spacer Kit | $23.83
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London Fixibike CNC SS Spacer Kit

BikeRadar verdict

4 out of 5 stars

"Lets one-gear wannabes experiment cheaply"

Tue 14 Oct 2008, 7:00 pm BSTBy Cycling Plus

Fancy switching to singlespeed – maybe for winter – but don’t want to shell out for a new wheel? These spacers slide over your cassette hub so that you can put a single sprocket on the back.

One benefit, apart from cost, is that you can use any sprocket from 11 to 34 teeth. That’s a much bigger range than is available with threaded singlespeed freewheels, which generally come in 16, 17 and 18-teeth only, but  you’ll need to take a cassette apart to get that sprocket, or buy one from the likes of Surly or Londonfixiebike. Plus you’ll still need some way to tension the chain. 

We were sceptical that the chain would engage well on the 12 tooth sprocket (pictured), as the underside of the chain rested on the spacers, but it worked fine without slipping, though we would still use a bigger sprocket (15 teeth plus) for peace of mind. 

The CNC machined aluminium spacers come in a set of seven in different widths, so it’s easy to get any chainline just right. The set weighs just 25g. 

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Specification

Name:
Fixiebike CNC SS Spacer Kit
Built by:
Londonfixiebike
Price:
$23.83

Description:
CNC custom machined in the UK exclusively for London Fixie from solid lengths of 6082 aluminium alloy - not cut from tube. Superb quality.
Manufacturer's Description:
Allows road or mountain bike cassette hubs to be used with a single cog. Pack of seven includes 1 of 7.5mm - 1 of 6.5mm - 1 of 5.5mm - 2 of 4.5mm and 2 of 2.5mm. Compared to the two wide spacers supplied in basic SS kits.. this combination of seven spacers in five different narrow widths allows very precise fine tuning of rear chainline. Works with any SS cog from the thinest taken from a cassette to the fattest Surly. Use with single-dual- triple cog set-ups etc - this is a very adaptable kit.

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