Crupi Rhythm Cassette Cog-Chromoly Gear Size:15T 1 1/8": 12g (per set

1 1/8": 12g (per set of 3)

14 Traction Pins Per Side

25 INFLATED WIDTH: 2

CHEMICAL ETCHING ON TREAD: Special chemical surface etching applied to center tread creates fine surface texture that enhance traction on wider variety of track surfaces

55" low friction alloy inner cable housing protects the 63" Teflon coated black cable from knicks and dings that would sever your line

Crupi Rhythm Cassette Cog-Chromoly Gear Size:15T 1 1/8": 12g (per setSPECS: FIT: Crupi Rhythm hubs or any Shimano compatible hub CHAIN FIT: 3 32" recommended (1 8" can be used as well) MATERIAL: Machined 4130 chromoly J&R Helpful Hint: Cogs and sprockets wear over time. We recommend replacement every 6 months due to chain wear. Weight: 12T: 0. 7oz 20g 13T: 0. 84oz 24g 14T: 1. 02oz 29g 15T: 1. 12oz 32g 16T: 1. 3oz 37g 17T: 1. 51oz 43g 18T: 1. 69oz 48g