CeramicSpeed Pulley Wheels Shimano 11-Speed - 12 Tooth Narrow Wide Alloy BLK Crank Intended Use-Tandem Peak Nano Optics Photochromic is

Peak Nano Optics Photochromic is equipped with a high tech lens in X-PC with photochromatic abilities that darkens and lightens up automatically to the strength of the sunlight (UV light)

An urban favorite that's also getting lots of use by gravel riders

This ruler has you covered with a wide range of measurements in both male and female for solid

Frame Size 21 Wheel Diameter 20 Color Black clear Primary Color Black

Factory installed half-link for a radically stronger set-up Links 112 Drivetrain Speeds Single Speed 1/2" x 1/8" Chain Connection Type Pressed Pin Color Blue Weight 264 Half Link Chain No Defined Color Blue

CeramicSpeed Pulley Wheels Shimano 11-Speed - 12 Tooth Narrow Wide Alloy BLK Crank Intended Use-Tandem Peak Nano Optics Photochromic isCeramicSpeed pulley wheels reduce friction last 3 5 time longer than stock high end pulleys and are designed to work with less drag. Premium Grade 3 Silicon Nitride Ceramic balls Hand built in Denmark Drivetrain Speeds 11 Fits Brand Shimano