SRAM GX XG-1150 11 Speed Cassette - XD Driver - 10-42T - 11 Speed Heavy/Bulky Sizing: This is measured around

Sizing: This is measured around the circumference of the head

Service Kit #1 is for original posts that do NOT have a metal spring around the main seal

8mm diameter bars

The removable insole has D30 impact protection under the heel and ball of the foot to provide extra support during big impacts and hard landings

but that's about it

SRAM GX XG-1150 11 Speed Cassette - XD Driver - 10-42T - 11 Speed Heavy/Bulky Sizing: This is measured aroundSave hundreds with Sram's GX XG 1150 11 speed cassette! Utilising eleven steel cogs pinned together, the GX 1150 cassette gives you the same great gear range found on the XX1 cassette at a fraction of the cost. Perfect for replacements or building up a new ride. Features: Wide 11 speed 10 42t gear range 4130 Chromoly steel 10 12 14 16 18 21 24 28 32 36 42 Optimised gear steps Open design helps clear mud Requires XD driver