Helix Race Cassette Gravel 12s AL Cogs ethirteen G S3-Size-29x9mm breathable shock absorption that is

breathable shock absorption that is certified to meet CE EN 1621/1 standards

Fits all VACUUM cases

but locks instantly upon impact to absorb massive amounts of energy

Adjustable nose piece

This new addition to the Crombie family is specifically built to work with the new external splined lockrings found on the new Shimano mountain bike drivetrains featuring a 9 tooth final cog

Helix Race Cassette Gravel 12s AL Cogs ethirteen G S3-Size-29x9mm breathable shock absorption that ise*thirteen Helix Race Cassette Gravel 12 Speed Aluminum Cogs 38 45T Grey These are the replacement clusters for our HELIX Race 12 SPEED GRAVEL CASSETTE. The Helix Race 12 Speed 9 45T cassette extends legendary Helix shift performance and cross compatibility with SRAM and Shimano 12 speed drivetrains, to the light weight Gravel and XC marketplace. The 38 45T alloy cluster is easily replaceable so riders can keep their steel cluster for multiple seasons