Definition from Wiktionary, the free dictionary
swingarm (plural swingarms)
- (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”, New York Times:
- 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.