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swing +‎ arm


swingarm (plural swingarms)

  1. (motorcycling) The main component of the rear suspension of most modern motorcycles and ATVs; holds the rear axle in place while swinging vertically to allow the suspension to absorb the shock from bumps in the road.
    • 2007 September 9, Jerry Garrett, “Updating a Dual-Purpose Stalwart”, in New York Times[1]:
      At the rear, stiffer springs, a new aluminum swingarm and a redesigned linkage for the suspension all benefit on-road behavior, though there is now an inch less ground clearance.

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