2021 Harley-Davidson Softail Slim FLSL Classic Harley-Davidson styling with modern Softail performance. This 2021 Harley-Davidson Softail Slim FLSL delivers the unmistakable look and feel Harley riders love, combining old-school cruiser styling with the performance and comfort of the modern Softail platform. Powered by Harley-Davidson’s Milwaukee-Eight 107 V-Twin, the Softail Slim offers strong torque, a smooth power delivery, and that signature Harley-Davidson exhaust note. Its low-slung profile, wide front tire, minimalist styling, and classic bobber-inspired design give it an aggressive yet timeless presence. The Softail Slim is an excellent choice for riders looking for a motorcycle that is comfortable around town while still ready for longer weekend rides. With its relaxed riding position and stripped-down styling, this bike puts the focus where it belongs—on the ride. Highlights 2021 Harley-Davidson Softail Slim FLSL Milwaukee-Eight 107 V-Twin engine 6-speed transmission Classic bobber-inspired Softail styling Low, comfortable riding position Premium Harley-Davidson fit and finish Excellent combination of style, torque, and rideability If you’re looking for a Harley with timeless styling, strong V-Twin performance, and plenty of attitude, the 2021 Softail Slim deserves a closer look.