This Surly Fixxer Hub Converter is no longer available although you may find similar or newer versions below:
Even if it ain't broke, you can still fix it with the Surly Fixxer hub converter (Shimano cassette hub to track hub converter).
The Fixxer allows you to convert any Shimano cassette hub (except Silent Clutch, Post 2003 Dura Ace or pre-1997 Dura Ace) into a true fixed-gear.
By simply removing the cassette body and replacing it with our adapter, you can use a fixed track cog and lockring for safe coast-free riding. A popular conversion for track racers, spring time trainers, fixed-gear commuters and messengers, the Fixxer includes all parts necessary for installation, including axle, bearing, cones, spacers, and axle nuts.
Most converted hubs can be spaced 120, 126, 130 or 135mm, and can even be used with a freewheel if a freewheeling single-speed conversion is desired.
Cassettes and freewheels for bikes are a cluster of sprockets in a range of sizes offering a multitude of gear ratios. The difference between the two is, a cassette slots onto the freehub, which has the ratchet built in and is then secured with a lockring, whereas a freewheel is a cluster of sprockets built around a ratchet and threads directly on to the hub. Cassettes and freewheels come in many ratios, close ratio is when the number of teeth increase in small increments of 1 or 2 at a time, whereas a wide ratio is when the teeth increase in larger increments of 3 or 4 at a time. Most systems will use a cassette hub as these allow for a wider bearing spacing and increased axle life, you can also fit a larger quantity of sprockets onto a cassette hub with 11 speed systems now becoming available. With cassettes you must use the appropriate spacing for your gear levers and rear mech, Shimano and Campagnolo are not interchangeable so you will need to match the cassette to your levers for smooth and precise shifting. Sram and Shimano chains and cassettes will work together as they use the same spacing.
Surly Bikes manufacture a wide range of bikes, frames, parts and accessories. Surly are based in Boomington, Minnesota USA and were established in 1998. The company aims to build solid, quality components for a reasonable price.
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Executive Director: Stefan Barden.