Hope rs4 c lock disc front road hubhopes reputation continues to grow internationally they have achieved global recognition due to the high quality products they offer to the market this rs4 c lock disc front road hub is durable serviceable and versatile the hub shell is made from t 6 aluminium billet and is paired with stainless steel cartridge bearings for a smooth consistent rolling performance featuresmaterial forged t 6 aluminium billet hub shell stainless steel cartridge beari