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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
CRANK REQUIREMENT: Any crank with 4-Bolt spider or that can be adapted with a 4-bolt spider
S-Spec tires conform better to track surfaces for buttery smooth runs
GRIP-PODS (PATENT PENDING): Pressure-sensitive traction system featuring sticky bristle knobs encased within a recess enabling an ultra-low tread profile with traction coming alive through applied force
FRAME FIT: Freestyle 990/U-brake - Low profile arms
Full chromoly and heat treatment make these cranks the perfect replacement or upgrade crankset for kids with low dough
Rennen Aluminum Cassette Cog Gear Size:17T CRANK REQUIREMENT: Any crank withRennen Aluminum Cassette Cog are manufactured with 7075 T6 Aluminum, stronger than the industry usual of 6061 Aluminum. Measuring in at only 3 16" so it won't rub your hubs, Rennen Cogs are also the one of the lightest cogs on the market, with the 16T coming in at only 17 grams! Available in a wide range of sizes for various speeds, Rennen Cogs are also Shimano Spline compatible and will work with 8 & 9 speed chains. WEIGHT 13T: 0. 35oz 10g 14T: 0.