Zipp SL Sprint Stem - 120mm 31.8 Clamp +/-12 1 1/8" Matte Black A3 Casing-TCS Tough SG1 IP+ K21 S Silver Uni -

K21 S Silver Uni - Great in challenging conditions

Bead blasted anodized black finish

Tooth Count 36 Round or Oval Round Drivetrain Speeds 12 Drivetrain Speeds 11 Drivetrain Speeds 10 Direct Mount Type Direct Mount SRAM Defined Color Black Ring Position/Type Single Ring Position/Type Chain Retaining Single Ring Offset 3 Chainring BCD Sram Direct Mount Color Black Material Aluminum Material Aluminum Chainline/Hub Compatibility 141/148 Boost Hubs

It is compatible with 12mm thru axles and QR

Defined Color Yellow Material Synthetic Size Large/XL Windblock Yes Fabric Weight Mid

Zipp SL Sprint Stem - 120mm 31.8 Clamp +/-12 1 1/8" Matte Black A3 Casing-TCS Tough SG1 IP+ K21 S Silver Uni -Zipp SL Sprint Stem 120mm 31. 8 Clamp + 12 1 1 8" Matte Black A3. Just as cyclists maximize performance by being as light but as powerful as possible the SL Sprint Stem strikes the ideal balance of stiffness and lightweight to deliver responsive handling without wasting a single watt. Unidirectional carbon The SL Sprint comes with its own stem cap thats designed to be aerodynamically efficient by blending into the stem body Includes stiff aluminum