Ritchey Headset external cut Logic

The Ritchey External Cup EC Threadless headset features a smaller upper bearing to save weight, while the oversized lower bearing is designed to handle loads. Deep bearing cups ensure a solid fit.

Material: steel/plastic

No threads

Headset height: 28.9mm

Top stack height: 15.7mm

Bottom stack height: 13.2mm

Head tube diameter: 34mm

Upper S.H.I.S.: EC34/28.6 (1 ⅛")

Lower S.H.I.S.: EC34/30 (1 ⅛")

Bearings: ball bearing

Weight: 156g

Color: black

Not compatible with Ritchey WCS Carbon forks with integrated 45° crown.