SRAM Red E1 XG-1290 10-30 12 Speed Cassette Rainbow Colour:Rainbow Integrated MIPS® Brain Protection System:

Integrated MIPS® Brain Protection System: All Giro helmets are designed to reduce as much energy as possible while meeting and exceeding stringent safety standards

use 118/73 Powerspline Bottom Brackets

Larger entry target for easier engagement

4 back up rings

SRAM Red E1 XG-1290 10-30 12 Speed Cassette Rainbow Colour:Rainbow Integrated MIPS® Brain Protection System:About SRAM Red E1 XG 1290 10 30 12 Speed Cassette Rainbow Wide range and tight jumps? Why not both? SRAM's lightest, most durable cassette breaks new ground for gearing choices as well. Four distinct cassette options, including SRAM's first 10 30T and 10 36T RED cassettes, each provide secure shift ramps specifically designed for electronic shifting, whether racing road on a 10 28T or creating an all road setup with a 10 36T. Carefully chosen tooth