SRAM RED/FORCE X-SYNC ROAD AERO DM CHAINRING trek kids Now with even greater efficiency

Now with even greater efficiency

5 Bar (55 - 95 psi)

99% pollution-free

Battery: Computer: CR1616

BB Standard: PressFit BB89

SRAM RED/FORCE X-SYNC ROAD AERO DM CHAINRING trek kids Now with even greater efficiencyThe one piece Sram Red 1x12 speed Direct Mount chainring provides faster, smoother and safer gear changes with less wear on the new designed tooth profiles. Features SRAM X SYNC wide tooth, narrow tooth chainring technology provides maximum chain control Laser etched chainring finish is more durable X Range gearing technology gives you more range and a smoother gear progression, so you're always in the right gear Specification Use: Road Group: Red