Shimano FC-RS520 12 Speed Chainset Crank Arm Length:175mm With the introduction of PureGrip

With the introduction of PureGrip technology

P ZERO™ ROAD aims to be the perfect solution for those riders who are looking for balanced performance

the crankset seamlessly distributes weight and pressure loads to give the best possible performance on every ride

Tooth: 40 or 42T

but whats not immediately apparant is the weight loss and performance gain

Shimano FC-RS520 12 Speed Chainset Crank Arm Length:175mm With the introduction of PureGripShimano FC RS520 12 Speed Chainset The Shimano FC RS520 105 Double 12 Speed Chainset is a 2 piece crank that uses an outboard, 24 mm bottom bracket and features 2x12 speed 50 34T chainrings. It uses a 4 arm construction and is compatible with modern disc brake road frames. The chainring teeth have been developed to work in conjunction with Hyperglide plus 12 speed chains for increased contact to provide greater efficiency and improved power transfer.