RITCHEY WCS SEMI INTEGRATED ZS44/28.6 UPPER HEADSET Finance which is why the driver

which is why the driver perceives the sound as significantly quieter

It's built from recycled materials and fits neatly in small spaces

Shimano 105 10/11 speed hub is super smooth and highly dependable

Its 705 mm² support surface ensures perfect pedalling stability

RITCHEY WCS SEMI INTEGRATED ZS44/28.6 UPPER HEADSET Finance which is why the driverDesigned for bicycles with semi integrated headsets, the WCS Semi Integrated ZS Upper Headset features full complement angular contact cartridge bearings packed with Ritchey high webbing grease. Material: Alloy Headtube ID: 44mm ZS44 28. 6 (1 ) bearing: 41. 0 30. 15 7mm 45 45 sealed cartridge (ACB) Stack height: 10. 1mm 15. 2mm S. H. I. S.: ZS44 28. 6 (1 ) Weight: 43g Contents 1 x Ritchey WCS Semi Integrated ZS44 28. 6 Upper Headset