CeramicSpeed Pulley Wheels Shimano 11-Speed - 12 Tooth Narrow Wide Alloy BLK Crank Intended Use-Tandem Frame Size 21 Wheel Diameter

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

Removable Rebound knob doubles as HSC adjuster

Windproof four-way stretch material

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

Color Black Rings 32 Number of Chainrings Chain Retaining Single Crank Length (mm) 175 Crank Intended Use Mountain Drivetrain Speeds 11 Drivetrain Speeds 12 BB Included No Pedal Spindle 9/16" Spindle Interface Type SRAM DUB Chainring BCD Direct Mount SRAM Chainline/Hub Compatibility 141/148 Boost Hubs Defined Color Black

CeramicSpeed Pulley Wheels Shimano 11-Speed - 12 Tooth Narrow Wide Alloy BLK Crank Intended Use-Tandem Frame Size 21 Wheel DiameterCeramicSpeed 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