CeramicSpeed Pulley Wheels for Shimano 11-speed - 11 Tooth Alloy Black CheckoutSpec= Fits many 1 Imported headsets }Wheels Manufacturing M5 X 25mm

}Wheels Manufacturing M5 X 25mm Socket Head Cap Screw Stainless Steel Bottle/25

Chainring spider is removable

Designed to face the worst British weather has to offer Hope Press-fit bottom brackets feature high quality sealed bearings and secure installation that fit a variety of cranks

FSA ATB and Pro ATB chainrings deliver flawless shifting

CeramicSpeed Pulley Wheels for Shimano 11-speed - 11 Tooth Alloy Black CheckoutSpec= Fits many 1 Imported headsets }Wheels Manufacturing M5 X 25mmCeramicSpeed Pulley Wheels for Shimano 11 speed 11 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 Fits Brand Shimano Drivetrain Speeds 11