Surly Single Speed Conversion Kit Bundle 
£93.96 if bought individually - Save over £13

Contents:

1 Surly Singleator
1 Surly Single Speed Spacer Kit
1 Surly Single Casstte Cog - Choose from 13 - 22 tooth
1 Set of 5 Single Speed Chainring Bolts

All you need to do is add a chain of your choice

Surly Singleator
Spring loaded chain tensioner for running Single Speed on non-adjustable chain tension frames.
Fit to rear mech hanger position.
Surly Singulator features CNC alloy body, variable chainline, floating tension pulley, stainless steel pivot bushing, Triple sealed reversible spring.
Compatible with 1/8" and 3/32" chains.
11T jockey and slotted alloy chain rejection side plates.
All in all... the mutts nutts of SS chain tensioners.

Surly Single Speed Cassette Cog.
Shimano compatible Spline fitting.

9 Speed spaced, these cogs can be run 9speed or less, together with Shimano 9Spd gear shifter systems.
Note: Teeth profiles are straight forward, making them ideal for Single Speed applications,
however, with no twists or ramps etc, the gear shifting will not be as slick as with regular Shimano cogs when used in a multiple cog line-up.

The large foot print caused by built-in spacing at the base of these machined cogs gives a larger foothold on the cassette body,
making these a premium selection for Single Speed or multi-speed use with reduced risk of torque transfer damage to the cassette hub body. (Note: This point is especially important with Alloy or Ti Cassette bodies)

CNC machined hardened SCM 415 Cr-Mo Steel.
Shimano HG Spline, 9Spd spaced.
Ideal for Single Speed use.
Large Anti-Dig footprint on cassette body.
Chrome Plated.
13-22T.
Note: When used in non-9 set-up, additional Cassette spacers wil be required to fill the cassette body.

Surly Single Speed spacer kit
Got a rear wheel from a geared bike collecting dust in your garage? Maybe it’s time you gave it some new life as a single-speed wheel. We now offer a single-speed spacer kit that allows you to use single-speed cassette cogs on the freehub body of your multi-speed Shimano cassette-compatible hub.