Single Speed

Moruya Bicycles offers a range of single-speed conversion parts for the luddite who thinks gears are a gimmick. All available for purchase on-line, for the borderline luddite. No, single speed bikes don't have only one gear, they have two: (1) On and (2) Off the bike.

Cassette Cog Cromoly 12T
 
+
77303 (S39b)
!

Suitable for single-speed conversions.

 

Weight: 10g.

Cassette Cog Cromoly 14T
 
+
77305 (S39b)
!
Suitable for single-speed conversions.

 

Weight: 18g.

Cassette Cog Cromoly 15T
 
+
77306 (S39b)
!
Suitable for single-speed conversions.

 

Weight: 23g.

Cassette Cog Cromoly 16T
 
+
77307 (S39b)
!
Suitable for single-speed conversions.

 

Weight: 27g.

Cassette Lockring 11T
 
+
77301 (S39b)
!
Cassette Lockring to suit 11t outer sprocket.

 

Weight: 5g.

Cassette Lockring 12T
 
+
77302 (S39b)
!
Cassette Lockring to suit 12T outer sprocket.

 

Weight: 6g.

Cassette Spacer 10mm
 
+
77308 (S39b)
!
Alloy 10mm spacer to take the place of all those missing cassette sprockets.

 

Weight: 6g.

Cassette Spacer 5mm
 
+
77309 (S39b)
!
Alloy 5mm spacer to take the place of all those missing cassette sprockets.

 

Weight: 3g.

Single Speed Chain Tensioner Alloy/Steel
+
77506 (S39e)
!
Sprung chain tensioner with side-adjustability for single-speed conversions.

 

Weight: 103g.

Single Speed Chain Tensioner Urethane
+
77505 (S39e)
!
Mr. Control Chain tensioner.

Attaches via the steel screw that tightens in to the derailleur hanger. There's also a black alloy "nut" that can be used along with a 5mm screw from behind a rack or mudguard mount to lock the tensioner in position.

Weight: 105g.

Single Speed Conversion Kit 16T
+
77312 (S39b)
!
Includes 16 tooth drive sprocket, 12T lock ring, 2 x 10mm alloy spacers, 1 x 5mm alloy spacer, 4 x 3mm alloy spacers.

 

Weight: 57g.

Surly Single Speed Cassette Cog 13T
+
77320 (S39b)
!
Surly's cassette cogs are designed to fit on standard Shimano compatible freehub bodies. These cogs have a tall tooth profile that is essential for preventing chain skip from the extra torque a singlespeed drivetrain encounters.
Weight: 25g.

Surly Single Speed Cassette Cog 14T
+
77321 (S39b)
!
Surly's cassette cogs are designed to fit on standard Shimano compatible freehub bodies. These cogs have a tall tooth profile that is essential for preventing chain skip from the extra torque a singlespeed drivetrain encounters.
Weight: 31g.

Surly Single Speed Cassette Cog 15T
+
77322 (S39b)
!
Surly's cassette cogs are designed to fit on standard Shimano compatible freehub bodies. These cogs have a tall tooth profile that is essential for preventing chain skip from the extra torque a singlespeed drivetrain encounters.
Weight: 41g.

Surly Single Speed Cassette Cog 16T
+
77323 (S39b)
!
Surly's cassette cogs are designed to fit on standard Shimano compatible freehub bodies. These cogs have a tall tooth profile that is essential for preventing chain skip from the extra torque a singlespeed drivetrain encounters.
Weight: 49g.

Surly Single Speed Cassette Cog 17T
+
77324 (S39b)
!
Surly's cassette cogs are designed to fit on standard Shimano compatible freehub bodies. These cogs have a tall tooth profile that is essential for preventing chain skip from the extra torque a singlespeed drivetrain encounters.
Weight: 52g.

Surly Single Speed Cassette Cog 18T
+
77325 (S39b)
!
Surly's cassette cogs are designed to fit on standard Shimano compatible freehub bodies. These cogs have a tall tooth profile that is essential for preventing chain skip from the extra torque a singlespeed drivetrain encounters.
Weight: 59g.

Surly Single Speed Cassette Cog 19T
+
77326 (S39b)
!
Surly's cassette cogs are designed to fit on standard Shimano compatible freehub bodies. These cogs have a tall tooth profile that is essential for preventing chain skip from the extra torque a singlespeed drivetrain encounters.
Weight: 70g.

Surly Single Speed Cassette Cog 20T
+
77327 (S39b)
!
Surly's cassette cogs are designed to fit on standard Shimano compatible freehub bodies. These cogs have a tall tooth profile that is essential for preventing chain skip from the extra torque a singlespeed drivetrain encounters.
Weight: 75g.

Surly Single Speed Cassette Cog 21T
+
77328 (S39b)
!
Surly's cassette cogs are designed to fit on standard Shimano compatible freehub bodies. These cogs have a tall tooth profile that is essential for preventing chain skip from the extra torque a singlespeed drivetrain encounters.
Weight: 85g.

Surly Single Speed Cassette Cog 22T
+
77329 (S39b)
!
Surly's cassette cogs are designed to fit on standard Shimano compatible freehub bodies. These cogs have a tall tooth profile that is essential for preventing chain skip from the extra torque a singlespeed drivetrain encounters.
Weight: 99g.