SRAM 2010 and later X9 and X7 9- and 10 speed Pulley Kit Mount-4x64mm which is important as changeable

which is important as changeable conditions are often encountered over the course of marathon races

Color Brushed Titanium Number of Chainrings No Rings Included Crank Length (mm) 172

Year 2017+ Model Deluxe

Old School

Lumen Range 401 - 600 Position Front and Rear Primary Color Black Run Time Up to 15h Output 500 lumens Battery Type USB rechargeable Rechargeable Yes Light Type LED

SRAM 2010 and later X9 and X7 9- and 10 speed Pulley Kit Mount-4x64mm which is important as changeableSRAM 2010 and later X9 and X7 9 and 10 speed Pulley Kit. Original equipment rear derailleur pulleys for SRAM rear derailleurs. TECH SPECS Fits Brand SRAM Drivetrain Speeds 9 Drivetrain Speeds 10