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Promax Direct Mount chainrings are made to be lightweight yet extremely durable to handle the torque and stress of modern BMX racing and other single ring applications
a Clarino palm for grip
Compatible with any JIS square-taper bottom bracket
and other varying conditions
Weight: 370
BOX ONE ALUMINUM HUB LOCK RING Promax Direct Mount chainrings areThe Box One Lockring is extruded and CNC machined from 6061 T6 aluminum and designed to be super lightweight. Replace that old steel lock ring you have now and save some weight while adding style and color to your whip. Available in anodized red, blue, gold, and black to fit Shimano compatible cassette bodies. Keep in mind, aluminum is softer than steel, so use care when installing one of these lock rings.
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