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)

Windproof four-way stretch material

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

04 The thru axle adapter kit is for bikes with a 12 mm thru axle

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