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By placing the motor in the chassis rather than the rear hub, the mid-drive motor significantly reduces unsprung weight and improves the suspension.—New Atlas, 13 Mar. 2026 Instead of the springer or girder front suspension and semi-hard-tail frame of the original, the Chief Vintage uses modern but stylized front forks and discreet twin rear shocks that mimic the unsprung frame of the post-war bikes.—William Roberson, Forbes.com, 29 Jan. 2026 The spindle is the link between unsprung weight (specifically, the wheels and tires) and the sprung weight (the rest of the vehicle).—Kristin Shaw, Popular Science, 31 July 2025 Photo : Verge Motorcycles The bike might look straight out of the movie Tron, but the design does come with a serious tradeoff: The rear motor now adds a lot of unsprung weight.—Michael Van Runkle, Robb Report, 23 July 2024 See All Example Sentences for unsprung