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Cranksets - RA Cycles

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The crankset is where your legs connect to your drivetrain — and the right one makes a difference you feel in every pedal stroke. The Cranksets collection at RA Cycles covers the full spectrum: complete cranksets with integrated power meters from SRM, Shimano, SRAM, and Campagnolo; standalone crank arm sets across every groupset tier; and chainrings for riders looking to change gearing, upgrade to oval rings, or replace worn components.

The range spans road, gravel, track, and mountain disciplines. At the top end, SRM's Origin and Science PM9 platforms pair full carbon cranksets with race-accurate power measurement. Mid-range builds are well served by Shimano Ultegra and SRAM Force, and Campagnolo's Super Record WRL offers the Italian alternative. Rotor, FSA, and THM round out the selection for riders with specific compatibility or performance requirements.

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About Cranksets & Chainrings

Choosing a crankset involves matching several specifications to your frame and groupset: spindle standard (BB30, PressFit, T47, or BSA threaded), crank arm length, chainring count (2x or 1x), and bolt circle diameter (BCD) if you plan to run aftermarket rings. Power meter integration — whether built into the spider, left arm, or both arms — adds another variable. The range here covers every configuration, from entry-level alloy cranks to flagship full-carbon options with sub-700g weights and dual-sided power measurement accurate to ±1%.

RA Cycles stocks cranksets from Shimano (Dura-Ace, Ultegra, 105, GRX, XTR), SRAM (Red, Force, Rival AXS — all 1x and 2x), and Campagnolo (Super Record, Record, Chorus). For power meter-first builds, SRM's PM9 platform spans road and track in both carbon and alloy. Rotor brings Spanish-engineered oval and round ring options. FSA covers wide compatibility across groupsets, and THM's Clavicula SE represents the pinnacle of weight-optimized performance for dedicated racers.

Browse related categories: complete groupsets, bottom brackets, chainrings, and power meters.

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R&A Cycles - 50th Anniversary

50 YEARS AND COUNTING

From a Brooklyn storefront to flagships in Walnut Creek and Miami, from handwritten mail orders to a fully digital custom bike builder — RA Cycles has spent half a century doing one thing: serving riders who demand the best. That half-century belongs as much to you as it does to us. The riders who kept coming back, who sent their friends, who trusted us with bikes that matter — you're the reason we're still here. Here's to the next fifty.

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