Ritchey Comp Headset Upper 15.3mm IS52/28 Black CheckoutSpec= Black/Amber Position sensor moves the chain

Position sensor moves the chain automatically into the ideal position for the selected sprocket/chainring combination

and thread length

TPI 100Color Black/TanWeight 325Defined Color TanISO Width (mm) 30ISO Diameter 622 / Road / 29"Tire Intended Use RoadTire Diameter 700cTire Bead FoldingLabeled Size 700 x 28Tire Type Tubeless Ready Clincher

CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older Maximum Head Circumference 58 Minimum Head Circumference 56 Color White/Black Size Medium Visor Included Yes Multi Impact No Weight 725 Helmet Style Mountain Defined Color White

This stem cap is where your bike fashion sense and the weight weenie in you collide

Ritchey Comp Headset Upper 15.3mm IS52/28 Black CheckoutSpec= Black/Amber Position sensor moves the chainSealed cartridge bearings that drop directly into the head tube Upper includes top cap Lower includes crown race Model Comp Upper S. H. I. S. IS52 28. 6 Stack 8. 3mm Upper Lower Upper Color Black