SRAM SRM Power Meter S975 PRO GXP Chainset 53-39

SRM Power Meter S975 PRO GXP Chainset 53/39

A leader in the world of power measurement, and constantly driving innovation, the wireless S975 SRM integrates SRAM’s unidirectional carbon fibre crank arms matched to SRAM’s smooth shifting RED chainrings. The S975 wireless delivers all the function you expect to maximize your personal training and features ANT wireless technology for use with a range of wireless display devices.

GXP (not included)

Giga X Pipe External Bottom Bracket Bearing Assembly. While other systems rely on side loading the bearings to eliminate play, which causes premature bearing wear, the GXP system is different. The GXP system captures the left side bearing between the spindle and the left crankarm while allowing the drive-side bearing to float axially on the spindle, thereby eliminating the necessity to side-load bearings during adjustment. The simplicity of installation is refined: once it is tightened to the proper specifications you are ready to roll with a worry free BB. The GXP system uses two bicycle specific cartridge bearings and eight seals for a smooth and long lasting ride.

Note the 177.5mm 53/39 chainset is special order.