These are our most popular cogs and freewheels. Email me if you cant find what you need.

function changeprice1(which){switch (which) {case '16t blue': document.forms.paypal1.elements.amount.value='62.99';document.getElementById("pricediv1").innerHTML = '£62.99'; break;case '17t red': document.forms.paypal1.elements.amount.value='62.99';document.getElementById("pricediv1").innerHTML = '£62.99'; break;case '18t red ': document.forms.paypal1.elements.amount.value='62.99';document.getElementById("pricediv1").innerHTML = '£62.99'; break; } } White Industries ENO Single Speed Freewheel £62.99 (+ postage of £5.00) I have singlespad (?) for over 7 years, and I'm a 15+ stone pie predator, so it may come as no surprise to learn that I have destroyed just about every brand of freewheel –   except one! This is the first and only freewheel that addresses the issues that have plagued the one speed world. Its rebuildable and serviceable, No loose bearing, cartridges only, It engages every time, no slip ups, It engages very quickly 16 tooth all the way to 23 tooth available, And getting to the guts of the matter… 36 internal teeth engage 3 pawls, for a maximum of 10 degrees of slack. By comparison, Shimano has 20 teeth (18 degrees of slack) and only two pawls. You will notice a quick pick up, and better ride. And getting to the guts of the matter… 36 internal teeth engage 3 pawls, for a maximum of 10 degrees of slack. By comparison, Shimano has 20 teeth (18 degrees of slack) and only two pawls. You will notice a quick pick up, and better ride. Options: Please select ...16t blue17t red18t red Buy Now: function changeprice2(which){switch (which) {case '16:18 freewheel': document.forms.paypal2.elements.amount.value='71.99';document.getElementById("pricediv2").innerHTML = '£71.99'; break; } } White Industries DOS Dual Single Speed Freewheel £71.99 (+ postage of £5.00) Just like the regular white freewheels but with two cog on a single freewheel. Run 38t and 36t at the front (for example), and this at the rear, move the chain over and you have two gears: 38:16 for the road, 36:18 for the offroad Options: Please select ...16:18 freewheel Buy Now: function changeprice3(which){switch (which) {case '16t out of stock': document.forms.paypal3.elements.amount.value='15.99';document.getElementById("pricediv3").innerHTML = '£15.99'; break;case '17t ': document.forms.paypal3.elements.amount.value='15.99';document.getElementById("pricediv3").innerHTML = '£15.99'; break;case '18t ': document.forms.paypal3.elements.amount.value='15.99';document.getElementById("pricediv3").innerHTML = '£15.99'; break; } } Shimano Single Speed Freewheel £15.99 (+ postage of £1.96) The classic DX screw on freewheel for screw on style hubs . You will find the removal tool for this at the bottom of this page. Choose from 16t, 17t or 18t Quantity: 12345678910 Options: Please select ...16t out of stock17t 18t Buy Now: function changeprice4(which){switch (which) {case '16t ': document.forms.paypal4.elements.amount.value='15.99';document.getElementById("pricediv4").innerHTML = '£15.99'; break;case '17t': document.forms.paypal4.elements.amount.value='15.99';document.getElementById("pricediv4").innerHTML = '£15.99'; break;case '18t ': document.forms.paypal4.elements.amount.value='15.99';document.getElementById("pricediv4").innerHTML = '£15.99'; break; } } ACS Screw On Single Speed Freewheel £15.99 (+ postage of £1.96) Just like the Shimano freewheels, but less ShimaNO. These make a cooled louder freewheelin' clicky sound. Options: Please select ...16t 17t18t Buy Now: Wheels Manufacturing Single Speed Spacers Only £11.99 (+ postage of £0.88) The great thing about this kit is that you can play around with the spacers to get perfect chainline, and it will work on 7 speed hubs which is rare. Single speed conversion kit Fits all shimano style cassette hubs 4.5 mm spacers (7) 1 mm shims (2) Made in the USA Weighs a mere 14g (inc poly bag) You will find the removal tool for this at the bottom of this page. Does not include cog, hub and lock ring - picture illustrates it fitted to the hub. This is for the spacers only. Quantity: 12345678910 Buy Now: Wheels Manufacturing Single Speed Spacer & Cog Kit £17.99 (+ postage of £1.44) The great thing about this kit is that you can play around with the spacers to get perfect chainline, and it will work on 6 or 7 speed hubs which is rare. Two of the spacers are angled to support the cog. Single speed conversion kit with angled spacers Fits all shimano style cassette hubs Spacers (6) Angled Spacers (2) 1 mm Shims (2) 16t Cog (1) Made in the USA Weighs a mere 94g (inc poly bag) The spacers are BLACK, not silver Does not include the hub  - picture illustrates it fitted to the hub. This is for the spacers, lockring and cog only. You will find the removal tool for this at the bottom of this page. Quantity: 12345678910 Buy Now: Single Speed Spacers for CAMPAGNOLO £19.99 (+ postage of £1.55) These are very rare: we suggested to Dan at Wheels Manufacturing in Colorado that he made some spacers for the guys who have campag hubs and want to go singlespeed. And here they are, just like the regular ones elsewhere on this page Now the tough bit is we dont have any onespeed campag cogs we suggest you source geared cogs from Miche or by mashing up your existing campag cassette. Your rear cog will be designed to shift, so you need to make sure your chainline and chain tension is spot on. Got that? Single speed conversion kit with angled spacers Fits campagnolo 9/10 speed freehub bodies Spacers (6) Angled Spacers (2) 1 mm Shims (2) Lockring Made in the USA Weighs a mere 46g (inc poly bag) The spacers are Ti coloured anodised Buy Now: Gusset 1er Single Speed Spacer Kit (16t & 18t) £15.99 (+ postage of £1.90) Made from alloy, very strong skinny at the ends, fat in the middle for extra lateral rigidity the centre is offset to allow for chainline adjustment fits shimano 8 and 9 speed cassette hubs Includes the cassette style lockdown nut 16 tooth and 18 tooth included, so you can get the right gear. Suitable for use with singlespeed, 6, 7 or 8 speed chain. Many 9 speed chains are too narrow for the cogs. You will find the removal tool for this at the bottom of this page. Quantity: 12345678910 Buy Now: Gusset Micro 1er Single Speed kit (12t & 13t) £15.99 (+ postage of £1.90) Made from alloy, very strong skinny at the ends, fat in the middle for extra lateral rigidity the centre is offset to allow for chainline adjustment fits shimano 8 and 9 speed cassette hubs Includes the cassette style lockdown nut 12 tooth and 13 tooth included, so you can get the right gear. Suitable for use with singlespeed, 6, 7 or 8 speed chain. Many 9 speed chains are too narrow for the cogs. You will find the removal tool for this at the bottom of this page. Quantity: 12345678910 Buy Now: Wheels Manufacturing Spacer Cog & Chain Guide Kit £21.99 (+ postage of £1.95) This is real handy if you have a singlespeed that uses a tensioner as the chain guides mean your chain is more secure and less likely to come off. The next great thing about this kit is that you can play around with the spacers to get perfect chainline, and it will work on 6 or 7 speed hubs which is rare. Two of the spacers are angled to support the cog. Single speed conversion kit with angled spacers Fits all shimano style cassette hubs Spacers (6) Chain Guides (2) 1 mm Shims (2) 16t Cog (1) Made in the USA Weighs a mere 124g (inc poly bag) The spacers are BLACK, not silver Does not include the hub  - picture illustrates it fitted to the hub. This is for the spacers, lockring and cog only. You will find the removal tool for this at the bottom of this page. Buy Now: function changeprice11(which){switch (which) {case '13t ': document.forms.paypal11.elements.amount.value='17.99';document.getElementById("pricediv11").innerHTML = '£17.99'; break;case '14t ': document.forms.paypal11.elements.amount.value='17.99';document.getElementById("pricediv11").innerHTML = '£17.99'; break;case '15t ': document.forms.paypal11.elements.amount.value='17.99';document.getElementById("pricediv11").innerHTML = '£17.99'; break;case '16t ': document.forms.paypal11.elements.amount.value='17.99';document.getElementById("pricediv11").innerHTML = '£17.99'; break; } } Surly Single Speed Cog (13t to 16t) £17.99 (+ postage of £1.56) Precision CNC hardened SCM 415 Cr-Mo Steel. Chrome plated 7mm wide cog for large Anti-Dig footprint on cassette body. Shimano cassette hub compatible 3/32" width For use with Wheels manufacturing spacers Quantity: 12345678910 Options: Please select ...13t 14t 15t 16t Buy Now: function changeprice12(which){switch (which) {case '17t ': document.forms.paypal12.elements.amount.value='19.99';document.getElementById("pricediv12").innerHTML = '£19.99'; break;case '18t ': document.forms.paypal12.elements.amount.value='19.99';document.getElementById("pricediv12").innerHTML = '£19.99'; break;case '19t out of stock': document.forms.paypal12.elements.amount.value='19.99';document.getElementById("pricediv12").innerHTML = '£19.99'; break;case '20t ': document.forms.paypal12.elements.amount.value='19.99';document.getElementById("pricediv12").innerHTML = '£19.99'; break;case '21t ': document.forms.paypal12.elements.amount.value='19.99';document.getElementById("pricediv12").innerHTML = '£19.99'; break;case '22t': document.forms.paypal12.elements.amount.value='19.99';document.getElementById("pricediv12").innerHTML = '£19.99'; break; } } Surly Single Speed Cog (17t to 22T) £19.99 (+ postage of £1.56) Precision CNC hardened SCM 415 Cr-Mo Steel. Chrome plated Large Anti-Dig footprint on cassette body. Shimano cassette hub compatible 3/32" width For use with the Wheels Manufacturing spacers Quantity: 12345678910 Options: Please select ...17t 18t 19t out of stock20t 21t 22t Buy Now: function changeprice13(which){switch (which) {case '12t': document.forms.paypal13.elements.amount.value='4.50';document.getElementById("pricediv13").innerHTML = '£4.50'; break;case '14t ': document.forms.paypal13.elements.amount.value='4.50';document.getElementById("pricediv13").innerHTML = '£4.50'; break;case '16t': document.forms.paypal13.elements.amount.value='4.50';document.getElementById("pricediv13").innerHTML = '£4.50'; break;case '18t out of stock': document.forms.paypal13.elements.amount.value='4.50';document.getElementById("pricediv13").innerHTML = '£4.50'; break;case '20t out of stock': document.forms.paypal13.elements.amount.value='4.50';document.getElementById("pricediv13").innerHTML = '£4.50'; break; } } Gusset Single Speed Cogs £4.50 (+ postage of £0.98) Cassette Sprockets - Single Speed Cr-Mo Steel 1/2"x3/32" Non-skip Deep Tooth profile. Shimano type HG compatible spline fitting. Chrome. Picture shows many cogs - sold per cog Options: Please select ...12t14t 16t18t out of stock20t out of stock Buy Now: