The 2016 Harley-Davidson Softail Slim makes its case with pared-back bobber styling, an intentionally low solo seat and a Twin Cam 103B powertrain. Here are ten factory-backed details that define the standard FLS. These are design and specification highlights—not claims from a road test—and they should not be confused with the separate Softail Slim S or the redesigned 2018 generation.
What stands out about the 2016 Softail Slim?
1. A restrained, 1940s-inspired bobber look
Harley-Davidson describes the standard Slim as a minimalistic take on 1940s bobber styling. Its combination of a solo seat, simple lines and steel-laced wheels gives the bike a distinctive period-inspired silhouette without relying on elaborate bodywork. The company’s archived 2016 U.S. model page calls it a balance of Harley-Davidson past and present; that is the manufacturer’s characterization, not an independent assessment.
2. Blacked-out finishes that reinforce the look
Black finishes on the engine and other details give the Slim a darker, more pared-back appearance. This treatment works alongside the retro styling rather than making the bike look like a reproduction of a specific vintage model.
3. A low solo seat
The factory specification sheet lists a low-slung solo seat measuring 23.8 inches. That number is the seat figure in the specification sheet’s stated context; Harley-Davidson’s archived model page also presents seat-height figures in a separate specification section, so the figures should not be blended or treated as interchangeable without their measurement context. The low solo setup is a defining part of the Slim’s profile, but seat height alone does not establish comfort or fit for every rider.
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- Scope of use: Motorcycle seat for street bob fit for Harley Softail Street Bob FXBB/FXBBS 2018-later, Softail Standard 2020-later, Heritage Classic 107/114 2018-later.
- Step Style: The step-up seat with backrest for harley Softail shape provides support for the rider's waist when riding, improving comfort during long-distance riding.
- Progressive Comfort: Engineered with high-performance adaptive foam, our seat offers firm initial support to maintain riding stability and extend service life. With regular use, it gradually breaks in to a softer, more ergonomic feel that hugs your body, reducing pressure and fatigue during extended rides—no overly stiff discomfort or quick sagging issues.
- High Matchability: The softail standard seat is easy to install. Turn over the rear mounting bracket, align the front tongue of the seat with the original car's bayonet, and fix the rear screws.
- Package List: 1×seat, 1×backrest, 1×screw. No instructions.
4. Hollywood handlebars
The Hollywood handlebars are a recognizable styling feature and help shape the bike’s traditional cruiser appearance. Riders considering a different reach should check the fit of any replacement or accessory against the exact model year and its controls and lines.
5. Retro half-moon footboards
Half-moon footboards continue the old-school theme and provide a broad foot support surface. Their shape is part of the standard model’s factory design, rather than a feature unique to the Slim S.
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- Fitment: Fit for Harley Sport Glide, Low Rider, Low Rider S, Low Rider ST, FXLR FXLRS FXLRST 2018-later.This One-Piece Driver Passenger Seat offers a seamless upgrade for riders seeking both style and comfort
- Enhanced Comfort for Long Rides: The seat is ergonomically designed to provide maximum comfort for both the driver and passenger. Its contoured shape helps reduce pressure points, making long-distance rides more enjoyable for you and your passenger
- Supportive Design: With improved lumbar support for the driver and extra cushioning for the passenger, this Harley two up seat seat ensures a smooth and comfortable ride, even on rough terrain. The design also helps maintain a stable riding posture for better control
- Material: Synthetic Leather and Ultra-Foam – The seat is made from premium synthetic leather, offering a luxurious feel while being easy to maintain. The ultra-foam cushioning ensures long-lasting comfort, providing excellent support for both the rider and passenger, withstanding prolonged use without sagging
- Quantity: 1 x Harley Low Rider step-up seat
6. Black steel-laced wheels
The black steel-laced wheels add visual texture while fitting the bike’s stripped-back styling. They are one of the clearest details separating the Slim’s look from a conventional cast-wheel cruiser.
7. A narrow-profile rear tire
Harley-Davidson’s 2016 specification sheet identifies a 144 mm narrow-profile rear tire. The measurement describes the factory specification; it is not evidence of a handling advantage or a substitute for checking the tire currently fitted to a used motorcycle.
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- Fitment: Fit For Softail Heritage Classic FLHC 2018-2025, Street Bob FXBB 2018-2025 , Softail Standard FXST 2020-2025 , Softail Slim FLSL 2018-2021, Softail Deluxe FLDE 2018-2020
- This Driver & Rear Passenger Seat offers a wide driver area with deep bucket design, provides rider back and lumbar-support
- Comfortable Motorcycle Seat: Blends rider and passenger comfort with the ergonomics required to keep the rider locked in place. Built-in Soft foam, improve riding comfort for a long haul trip.
- Premium Quality: PU & Microfiber Leather+Foam++Iron+PP Plastic
- Package include: 1x Driver & Rear Passenger Seat (As the Picture Shown)
8. The standard model’s Twin Cam 103B
The 2016 standard Softail Slim (FLS) uses an air-cooled High Output Twin Cam 103B. Harley-Davidson’s archived U.S. specifications list 103.1 cubic inches (1,690 cc) of displacement and 100.3 lb-ft of torque at 3,000 rpm. These are manufacturer figures for the 2016 U.S. standard model, not independent test results.
9. A six-speed Cruise Drive transmission
The 2016 standard FLS pairs its engine with a six-speed Cruise Drive transmission. The same U.S. archive lists a 5-gallon (18.9-liter) fuel capacity and 677-pound (307-kilogram) dry weight. Those figures apply to that archived market and model year; equipment and specifications can differ by region.
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- Fitment: Fit For Softail Heritage Classic FLHC 2018-2025, Street Bob FXBB 2018-2025 , Softail Standard FXST 2020-2025 , Softail Slim FLSL 2018-2021, Softail Deluxe FLDE 2018-2020
- This Driver & Rear Passenger Seat offers a wide driver area with deep bucket design, provides rider back and lumbar-support
- Comfortable Motorcycle Seat: Blends rider and passenger comfort with the ergonomics required to keep the rider locked in place. Built-in Soft foam, improve riding comfort for a long haul trip.
- Premium Quality: PU & Microfiber Leather+Foam++Iron+PP Plastic
- Package include: 1x Driver & Rear Passenger Seat (As the Picture Shown)
10. A factory-listed way to bring the bars closer
Harley-Davidson lists a Softail Slim pull-back riser kit for riders seeking a shorter reach or a more upright position. Its current APAC listing describes 4.5-inch risers compatible with stock control cables and brake lines. That listing does not establish fitment for every Softail Slim year or market. Before buying, confirm the kit’s application for the motorcycle’s model year and verify handlebar, control-cable and brake-line compatibility. See the Softail Slim pull-back riser kit listing.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How the Slim S and later Slims differ
The 2016 Slim S is a separate model
The Softail Slim S was a distinct S-series model, not simply another name for the standard FLS. Harley-Davidson’s archive associates the S variant with a Screamin’ Eagle Twin Cam 110. Do not attribute that engine to the standard 2016 Slim, whose listed engine is the Twin Cam 103B. Compare exact model year, trim, market, engine and equipment when looking at listings or parts.
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- Fitment: Fit for Harley Softail Breakout and Fatboy 2018-2025. Note: It fits for rear short fender only
- Comfortable Motorcycle Driver Seat: Bring a driver along on your solo-seat equipped Softail model
- Low-Profile Riding Position: This motorcycle solo seat delivers a low-slung cruiser stance that places the rider deeper into the motorcycle. The seating position sits lower and slightly rearward compared to stock, supporting relaxed control on city streets and open roads
- Material: Constructed with a formed seat base and finished surface panels, featuring black side sections and diamond-style stitched detailing. The narrow nose profile is shaped to match the Fat Boy fuel tank proportions for a cohesive appearance
- Package Include:1x Solo Seat
The 2018 redesign begins a different generation
Harley-Davidson’s 2018 Softail redesign brought a new frame, suspension and Milwaukee-Eight powertrain to the Softail Slim and other models in the lineup, according to contemporary platform coverage. Those changes belong to the redesigned generation, not the 2016 Twin Cam model described here. When comparing used bikes across those years, treat engine family, chassis and suspension as generation-specific rather than carrying 2016 specifications forward.
Quick Recap
What to check when shopping for one
- Confirm the exact variant. Check whether the motorcycle is a standard Slim or Slim S, and verify the model year rather than relying on a listing title.
- Match specifications to market and year. The displacement, torque, fuel capacity and dry-weight figures above are for the archived 2016 U.S. standard model.
- Inspect actual equipment. A used bike may have different bars, wheels, tires or other parts than its factory configuration.
- Verify accessory application. For risers or other fit-related parts, confirm year-specific fitment and compatibility with the motorcycle’s controls, cables and brake lines before purchase.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
