e*thirteen Helix Race Cassette - 12-Speed 9-52t Gray Dual Valve Head Maximum load: 1700g

Maximum load:  1700g

Threadless seal head and manual negative air charge button designs allow for easy travel setting adjustments and the ability to properly set up riders of all different sizes and abilities

Dimension NDR features the same overall shape as the standard dimension saddles with 3mm of extra padding and side protectors to avoid scratches and abrasions when the going get a little too tough

}Zipp Freehub Kit - 2013 - 2015 188 Hub 11-speed SRAM/Shimano Red

The wide profile increases air volume allowing for lower tire pressures without squirm

e*thirteen Helix Race Cassette - 12-Speed 9-52t Gray Dual Valve Head Maximum load: 1700gThe e*thriteen Helix Race 12 speed 9 52t cassette is engineered to deliver precision shifting performance with an industry leading 578% gear range. The proprietary 9 tooth smallest cog combined with the 52t largest cog enables the use of a smaller chainring for improved clearance lighter system weight and a lower bail out gear ratio without high gear compromise. Seamless cross compatibility with Shimano SRAM and TRP 12 speed drivetrains Patented 2