The 20Five RS4 Rear Wheel is a lightweight and stiff Road/Cyclocross disc specific rim built onto Hope s RS4 Straight Pull Centre Lock Disc hub. They are tubeless compatible, although this does require tape and valves. The 6061 T6 aluminium construction features a strong and dependable welded join, designed to keep the rim together on hard knocks. The straight pull double butted Sapim Sprint spokes are made of stainless steel and the nipples are brass. The wheels can be adapted quickly and easily to suit different frame and fork fittings using Cube s conversion kits, available separately. Comes supplied with QR and 142x12 end caps as standard. All the wheels are machine built and hand finished in Barnoldswick.The RS4 Road Hub is the perfect combination of light weight and durability, and now the most versatile and serviceable hub on the planet is available with centre lock. Machined from forged 2014 T6 aluminium billet and with Hope s bullet proof sealed stainless steel cartridge beari