Ethirteen Helix Sram XD Cassette 12s 13-52T S3-Brand-Park It’s made of TIG-welded cro-moly

It’s made of TIG-welded cro-moly steel for strength and long life

pumping the trails and looking for the fastest line through the rock garden

PARK TOOL - BBB-4 BIG BLUE BOOK

Suitable for various storage applications

powered by Bosch

Ethirteen Helix Sram XD Cassette 12s 13-52T S3-Brand-Park It’s made of TIG-welded cro-molye*thirteen Helix Race Cassette 12 speed 13 52T Grey Fits Sram XD & XDR drivers A close ratio cassette specifically for e bikes. Enter the Helix Race 13 52T a new 12 speed close ratio cassette, specifically engineered for steep terrain where climbing speeds are high, and descents are gravity powered. The 13T, in combination with a 32T chainring, at 85rpm cadence, will deliver speeds at or just above 32kmph 20mph, which is just beyond the speed limited