The Polaris Slingshot is a cross between a motorcycle ... ProStar four-cylinder engine with 178 horsepower and a five-speed manual or automatic AutoDrive gearbox. Meanwhile, the Slingshot SLR ...
the Slingshot comes in two upper trims, the SLR at $30,399 and the top-spec R model at $33,999. An S model sits below the SL for $21,499 with a manual 5-speed transmission, but Polaris does offer ...