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  2. Is it strong?
The RR stem is CNC machined from 7075 T6511 aerospace grade aluminum for maximum strength and fatigue resistance. It has exceeded the mtb stem strength and fatigue requirements in accordance with BS EN ISO 4210 in virtual FEA simulations. We have not yet sent one of the RR stems out for official certification. When riding it, you can tell that it has a very solid and secure feel.

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