SRAM Quarq Power Meter S975 Chainset GXP 53/39

SRAM’s Quarq power chainset is compatible with all of SRAM’s road groupsets, and the cranks feature SRAM’s integrated carbon crank arm and SRAM’s proven RED chainrings. The Quarq is the lightweight leader for wireless power devices and installation and battery change-outs are simple, plus ANT Wireless compatibility makes gives it the flexibility to sync with nearly any display unit.

• Arm Material: Unidirectional Carbon
• Chainring Material: SRAM Red PG Chainrings with Anodized Coating, Alloy Chainring Bolts
• Weight: 884g w/ BB
• Available Arm Lengths: 170mm, 172.5mm, 175mm, 177.5mm
• Available Ratios: 53/39
• Head Unit: Garmin® (not included)
• Software: Training Peaks (not included)
• Wireless Technology: Latest Industry Standard, ANT Wireless Protocol (not included)

GXP

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.