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S900 GXP Crankset
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The new SRAM S900 offers an option between the SRAM Rival OCT and the SRAM Force Crankset. The S900 utilizes a new unidirectional carbon crank arm with a forged alloy spider. This crank arm is also used with SRAM’s SRM™ and Quarq™ Power- Meter systems. The SRAM S900 includes our proven Power- Glide™ chainrings and GXP™ BB system. It comes in full-size and compact ratios and in multiple crank arm lengths.
| Arm Material | Unidirectional Carbon, Forged Alloy Spider |
| Chainring Material | PG Chainrings with Hard-Anodized Coating |
| Weight | 795g w/BB (GXP) |
| Available Arm Lengths | 170mm, 172.5mm, 175mm, 177.5mm |
| Available Ratios | 53/39, 50/36, 50/34 |
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.
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