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CNC Track Cog
CNC Track Cog Price: $54.95
Availability: Available
Item #: 1529 -

Crossfire Freewheel
Crossfire Freewheel Price: $24.95
Availability: Available
Item #: 1623 -

Stronger, less expensive, and easier to replace than cassette hubs. ACS has set the standard for freewheels for almost 2 decades! Crossfire freewheels are removable with a unique 6-spline tool that fits all sizes.

D/A Track Cog
D/A Track Cog Price: $44.95
Availability: Available
Item #: 1678 -

Painstakingly designed to realize the ultimate balance of light weight and rigidity, Dura-Ace Track components deliver a winning advantage for the banked oval tracks across the world.

D/A Track Cog Lockring
D/A Track Cog Lockring Price: $19.95
Availability: Special Order
Item #: 1679 -

Painstakingly designed to realize the ultimate balance of light weight and rigidity, Dura-Ace Track components deliver a winning advantage for the banked oval tracks across the world.

Defiant Freewheel
Defiant Freewheel Price: $45.95
Availability: Available
Item #: 1761 -

Many of you with older bikes don't want to upgrade to cassettes, but find that a quality freewheel is almost impossible to find. That's because all the big Asian manufacturers are only churning out freewheels for department store bikes. IRD made these purposely nice enough to put on a vintage Cinelli road bike, but affordable enough to use as a replacement on cheaper bikes.

Deluxe Track Cog
Deluxe Track Cog Price: $44.95
Availability: Available
Item #: 1774 -

High quality track cog.

Freewheel
Freewheel Price: $39.95
Availability: Available
Item #: 2034 -

20t 1/2x1/8"

MX SS Freewheel
MX SS Freewheel Price: $39.95
Availability: Available
Item #: 2448 -

Designed for 3/32" and 1/8" chains

PW Track Cog
PW Track Cog Price: $119.95
Availability: Available
Item #: 2199 -

Finally! A track cog which attaches via six bolts using the same standard as a disc rotor. Have a Phil ISO hub? Have a disc hub you want to convert to a fixed hub? Here's the goods. High quality stainless steel machined and polished to the highest standards in San Jose, CA.

Single Speed Conversion Kit
Single Speed Conversion Kit Price: $39.95
Availability: Available
Item #: 2962 -

Aluminum spacers to convert a Shimano splined cassette hub to a single speed. Comes with 6 spacers, 2 chainguides, 2 1mm shims, a 16-tooth cog, and a lockring. 

Splined Cog
Splined Cog Price: $29.95
Availability: Available
Item #: 3643 -

These cassette-type cogs are designed to fit on standard Shimano compatible freehub bodies and have a tall tooth profile that is essential for preventing chain skip from the extra torque a singlespeed drivetrain encounters. In addition to being a stellar SS cog, the cog base width (where it contacts the freehub body) is 4.35mm, so you can stack a few of them up and use a 9-speed shifter for a simplified multi-speed drivetrain. This width also prevents it from ruining the freehub body as a...