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The 612 Track Crank (six-one-two) is an extremely stiff and strong 144BCD track crank. It is at home on the busy avenues of your city as it is on the boards of the velodrome.  It is a hardworking crank that you can ride the heck out of without worry. Day in day out, on the job or just for fun, the 612 will get you there.

We sweat the details, so the 612 (612 is Minneapolis’ area code) is cold forged instead of melt forged, allowing for a better grain structure in the metal and producing a stronger and more durable part.

It utilizes the classic JIS square taper spindle and comes with a color matched 46 tooth 1/8th chainring. Use it on the street, use it on the boards. Whatever you throw at it, the 612 Track Crank can handle.


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Recommended Spindle Length: 110mm
Spindle Interface Type: Square Taper JIS
Chainring BCD: 144
Bolt Pattern: 5-Bolt
Chain Compatibility: 1/2" x 1/8"
Weight: 726.0g w/ring and bolts

Part Numbers

Part Number Color Description
CR2900 Black 612 Track Crank 165mm Black
CR2902 Black 612 Track Crank 170mm Black
CR2908 Silver 612 Track Crank Silver 165mm
CR2909 Silver 612 Track Crank Silver 170mm
CR2910 White 612 Track Crank White 165mm
CR2911 White 612 Track Crank White 170mm

Nature Boy Disc Framesets Are in Stock

August 13, 2014 | Jeff


That's right, the wait is over. We've got all sizes of Nature Boy Disc framesets in stock now.

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