Intended Use: DH/Freeride

The Radia is 661's first foray into eyewear and delivers the same level of quality and exceptional value for money that they are known for: the Radia combines a lightweight chassis with a 40mm silicone backed strap and high-quality smoke mirror lens with anti-Fog and anti-Scratch treatments for perfect optical clarity

extending service life

it's the most widely requested chain by teams competing in the Tour de France

Material N/A

Crank Brothers Synthesis AL Enduro Rear Wheel - Rear - 29 Inch - 12x148mm Boost - Aluminium - 29.5mm - 6 Bolt - XD Driver Dropship Intended Use: DH/FreerideTracking and stability are offered up in spades with the Crank Brothers Synthesis AL Enduro Rear Wheel. Sporting a slightly narrower rim width than its front brethren, this wheel supports narrower tyre profiles for stiffer ride and improved rolling resistance. These have a Crank Bros Synthesis hub that is laced to the awesome Crank Bros Synthesis Alloy Rim. Super compliant, this wheel offers up the support and performance that you would expect from