Cema Chrome Steel Headset Bearing (41 x 30.1 x 6.5mm) JS01 Colour:BLACK they result in a lock

they result in a lock which can rightly be considered the safest way of securing high-value bicycles

300mm length

moisture-wicking hat

Lining made from warm Thinsulate

Known Compatibilities: Hollowtech II

Cema Chrome Steel Headset Bearing (41 x 30.1 x 6.5mm) JS01 Colour:BLACK they result in a lockIf you are a cyclist looking to make your bike lighter and help you boost your cycling performance, it is possible by upgrading to CEMA SRC bearings CEMA SRC Bearing series are specially designed for bicycle related applications such as wheel hubs, bottom brackets, and chain tensioner pulleys. Ceramic Bearings have been proved to reduce riders pedalling watts. CEMA SRC ceramic bearing series use G5 grade super high roundness silicon nitride ceramic