Sram S900 BB30 130 BCD Crankset

The new SRAM S900 offers an option between the SRAM Rival® OCT™ and the SRAM Force® Crankset. The 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 PowerGlide™ chainrings and GXP® BB system. It comes in full-size and compact ratios and in multiple crank arm lengths.


Specifications:

- Arm Material- Unidirectional carbon, Forged alloy spider
- Chainring Material- PG chainrings with hard-anodized coating
- Weight- 795g w/BB (GXP®)


Technology:

BB30:
Besides serious weight savings, this bottom bracket means narrow Q-factor, more ankle clearance, greater bearing durability and stronger crank construction.

GXP®:
GXP’s Gutter Seal design cuts friction and weight—improving both feel and performance.

PressFit™:
A variant of the external GXP bottom bracket, PressFit cuts weight by up to 40 grams and eases installation by allowing you to press the bearing cups into the frame instead of threading them. It requires no change to the crank spindle length and diameter.

Pressfit 30™:
This is a new design led by SRAM. It’s all the best from BB30 and Press-Fit bottom brackets in one captivating package. This bottom bracket is designed for 30mm spindle cranksets. The key difference with PressFit 30 is how the bearings are fitted into the frame. Bearings are housed in nylon cups which will be pressed into the frames bottom bracket shell. PressFit 30 will feature an integrated seal, pre-assembled into the cups, to further prolong bearing life. Frames will need a 46mm inner-diameter bottom bracket shell to accommodate this system. PressFit 30 for road will require a 68mm wide shell while PressFit 30 for MTB will require a 73mm wide shell. Advantages: Huge weight savings, narrow Q-factor, more ankle clearance, greater bearing durability, stiffer/stronger crank construction, simple installation. Allows for larger diameter frame tubes increasing frame stiffness. Drawbacks: Still searching.

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