CeramicSpeed Pulley Wheels Shimano XT/XTR 12-Speed - 14 Tooth Alloy BLK MPFN-DMR-V8-S works with Carbon Aluminum and

works with Carbon Aluminum and Steel steerers

Color Blue Material Cork Adhesive Yes Defined Color Blue Weight 68

}Surly Krampus Frameset - 29" Steel First Loser X-Large

8 Color Black/White Defined Color Black Length 60 Material Aluminum S

CeramicSpeed Pulley Wheels Shimano XT/XTR 12-Speed - 14 Tooth Alloy BLK MPFN-DMR-V8-S works with Carbon Aluminum andCeramicSpeed Pulley Wheels for Shimano XT XTR 12 Speed 14 Tooth Alloy Black. CeramicSpeed 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 TECH SPECS Drivetrain Speeds 12 Fits Brand Shimano