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The FSA Super Inner Chainring is compatible with both FSA and Shimano cranksets. They're ramped and pinned, so you'll get top-notch shifting quality with no chain suck. The Super is made from CNC-machined AL7075/T6 alloy, with added material left in place near the interface points between ring and spider. This added material gives the Super added flex-resistance -- ideal for explosive accelerations on climbs. Please note that these rings are for double-chainring cranksets only.

FSA makes four Super Inner rings: A 39t/130mm compatible with both Shimano and FSA non-compact cranksets; and 34t/110mm, 36t/110mm, and 38t/110mm rings compatible only with FSA compact cranksets.

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