Zipp SL Speed Stem - 90 mm 31.8 Clamp +/-6 1 1/8" Matte Black B2 Model=Pro Conical Headset Schwalbe Racing Ralph is a

Schwalbe Racing Ralph is a pure racing tire

Includes metal ICE TECH pads with radiator fins

Cartridge Type Threaded Included Cartridge Yes

such as performance cadence and calorie consumption

Tool interface - 4mm hex key

Zipp SL Speed Stem - 90 mm 31.8 Clamp +/-6 1 1/8" Matte Black B2 Model=Pro Conical Headset Schwalbe Racing Ralph is aZipp SL Speed Stem 90 mm 31. 8 Clamp + 6 1 1 8" Matte Black B2. Zipps SL Speed stem represents the essence of carbon componentry. Its stiff secure and light weight with a sleek design that compliments any bike. Unidirectional carbon Includes stiff aluminum faceplate and titanium hardware Torx T25 heads for precise torque readings and ease of adjustment TECH SPECS Stem Angle (deg) +6 Stem Angle (deg) 6 Length 90 Bar Clamp Diameter (mm) 31. 8 Color