2018 Harley-Davidson® FLSL Softail Slim®

137 mi
Bonneville Salt Denim
Barnett Harley-Davidson®

(800) 453-1513

2018 Harley-Davidson® FLSL Softail Slim®


ESTIMATED CITY/HWY Fuel Economy 47 mpg

The idea behind bobbers has always been to strip down and soup up the bike for a more exciting ride. The all-new Softail Slim® takes that idea to the edge. The look is authentic bobber-style done the way only Harley-Davidson can. It’s 35lb lighter than before. It has more power, more lean angle, and redesigned front and rear suspension. So you can put the Milwaukee-Eight® 107 engine to use and have some fun on your favorite twisty roads.

A raw, vintage H-D style, with a modern edge. The all-new Softail Slim® motorcycle is 35 pounds lighter than last year’s model, with more power, more lean angle, and a redesigned suspension.

•    Security System Option Standard

•    Color : Bonneville Salt Denim


•    HARLEY-DAVIDSON® Brass Timer Cover $72

•    HARLEY-DAVIDSON® Brass Derby Cover $185

•    HARLEY-DAVIDSON® Screamin’ Eagle Round High-Flow Air Cleaner $105

•    HARLEY-DAVIDSON® Screamin' Eagle Pro Street Tuner $357

•    HARLEY-DAVIDSON® Brass Air Cleaner Trim $158

•    HARLEY-DAVIDSON® Air Cleaner Trim Installation Kit $4

•    HARLEY-DAVIDSON® Brass Swingarm Pivot Bolt Cover $42

•    HARLEY-DAVIDSON® Screamin' Eagle Street Cannon Mufflers Long $567

•    HARLEY-DAVIDSON® Single-Sided Swingarm Bag $22

Parts total $1,512

Labor total $446


Total added value $1,958

Extended Service Plans Available on 15-calendar-year-old and newer motorcycles with fewer than 60K miles


The 2018 Harley-Davidson Softail Slim remains true to bobber styling. At first glance, one might not pick up on the changes throughout but that is the beauty of this update. Harley designers have seized upon the traditional styling of the Slim, without making a mess of the recipe. The chrome triple clamps now embellish a black fork tube cover, and the headlight backing has now been removed, giving it a more custom vibe. Plus, the classic Harley tank badge solidifies the Slim’s retro-mojo. In all, Harley designers have done a commendable job, paying homage to the bobbers that inspired it.

With the Twin Cam put out to pasture, the Milwaukee-Eight 107 powerplant takes its place. One of the most beneficial updates to the entire Softail line is the addition of the Milwaukee-Eight motor. Featuring a claimed 110 ft/lbs of torque at a low 3000 rpm in the Slim configuration, this motorcycle is a joy to ride due to heaping servings of torque. It also has a much smoother ride, thanks to the dual-counter balancing. The shotgun exhaust hums a tune that any gearhead can appreciate, especially when you start pouring the throttle on. Matched with great fueling, the Slim’s engine is faultless.

The Slim’s 26-inch seat height, floorboards, and swept flat bars make this bike incredibly accommodating to many riders. At 5’ 10”, with a 32-inch inseam, I had ample room to move about and relax. One of the biggest improvements comes in the seating position itself, which now features a tuck-and-roll seat that cradles the rider with relatively plush padding. Last year’s Slim was equipped with a minimalist seat that was not kind to the derriere.

All-new suspension adds performance and comfort to the 2018 Harley-Davidson Softail Slim. My biggest critique of the earlier Softail Slim was that its low slung stance meant less suspension travel, so it had harsh damping that transferred hits directly into the rider. Thanks to a new Show Dual Bending Valve fork with cartridge style internals, and an all-new single-shock rear suspension design, the 2018 Slim is remarkably comfortable. It easily soaks up inconsistencies of all shapes and sizes. Damping characteristics have been dramatically improved, making the Slim a smooth and predicable ride, keeping everything in line.

Harley-Davidson’s all-new Softail platform has allowed the brand to tease out greater capability and stability. The Slim is no exception to that rule, offering greater lean angles and confidence. While more spirited riders will become familiar with the sound of floorboards on the asphalt, that gravely song isn’t heard quite so soon. The most impressive advancement with this update is in terms of stability, regardless of the situation, due to greater torsional stiffness throughout. At no point, did I feel an ounce of unsettling headshake or flex in the Slim’s new Softail frame; it remains impressively sure-footed.

The 2018 Harley-Davidson Softail Slim is a gentle giant when it comes to handling. The Softail update has teased out a greater level of agility in the Softail line, making the Slim noticeably nimbler. It’s ample 64.2-inch wheelbase and 30 degrees of rake make for plenty of stability.

While the Slim is stable, it is willing to turn. In addition to having a cornering friendly 150mm rear Harley-Davidson branded Dunlop D401T tire, we can thank the updated geometry, suspension, and 35-pound weight loss for these positive attributes.

When it comes to braking, the Slim gets the job done. Though the curb weight of the Slim is a stout 671 pounds, it will come to halt commendably with just one disc per wheel. Feel at the lever is progressive and predictable, lacking any shocking bite, making either brake quite easy to modulate at any speed. To get the most out of them, it does require a good bit of muscle.

LEDs show the way on night rides. Moving away from conventional headlights, the 2018 Harley-Davidson Slim has a LED headlamp in a traditionally styled housing.

The Harley-Davidson Softail Slim has changed, but only for the better. The Slim has always been a charmer—great looks and gentle handling were standout characteristics of previous models. However, poor suspension and comfort characteristics left something to be desired. The 2018 Harley-Davidson Softail Slim suffers none of those issues, making it one of the most positively improved models in the latest lineup from The Motor Company. All of the wonderful attributes remain, while its previous foibles were cast aside, making it a stand out among the new Softails.



•    Engine 1 Milwaukee-Eight® 107

•    Bore 3.937 in.

•    Stroke 4.374 in.

•    Displacement 107 cu in

•    Compression Ratio 10.0:1

•    Fuel System 3 Electronic Sequential Port Fuel Injection (ESPFI)

•    Exhaust 2-into-2 shotgun; catalyst in muffler


•    Length 90.9 in.

•    Seat Height, Laden 7 25.5 in.

•    Seat Height, Unladen 26 in.

•    Ground Clearance 4.7 in.

•    Rake (steering head) (deg) 30

•    Trail 5.8 in.

•    Wheelbase 64.2 in.

•    Tires, Front Specification 130/90B16,53H,BW

•    Tires, Rear Specification 150/80B1677H,BW

•    Fuel Capacity 5 gal.

•    Oil Capacity (w/filter) 5 qt.

•    Weight, As Shipped 642 lb.

•    Weight, In Running Order 671 lb.


•    Engine Torque Testing Method J1349

•    Engine Torque 2 110 ft-lb

•    Engine Torque (rpm) 3,000

•    Lean Angle, Right (deg.) 27.4

•    Lean Angle, Left (deg.) 27.4

•    Fuel Economy: Estimated City/Hwy 5 47 mpg


•    Primary Drive Chain, 34/46 ratio

•    Gear Ratios (overall) 1st 9.311

•    Gear Ratios (overall) 2nd 6.454

•    Gear Ratios (overall) 3rd 4.793

•    Gear Ratios (overall) 4th 3.882

•    Gear Ratios (overall) 5th 3.307

•    Gear Ratios (overall) 6th 2.79


•    Wheels, Front Type 9 Gloss Black, Steel Laced

•    Wheels, Rear Type Gloss Black, Steel Laced

•    Brakes, Caliper Type 4-piston fixed front and 2-piston floating rear


•    Lights (as per country regulation), Indicator Lamps 8 High beam, turn signals, neutral, low oil pressure, engine diagnostics, ABS (optional), security, low battery voltage, low fuel

•    Gauges 5-inch with digital speedometer, gear, odometer,fuel level and analog tachometer indication

1. Recommended 91 octane or higher fuel (R+M)/2.

2. Values shown are nominal. Performance may vary by country and region.

3. Standard and optional fuel systems may vary by country.

4. See motorcycle owner’s manual for complete details.

5. Estimated from fuel economy tests on a sample motorcycle from the corresponding family conducted by Harley-Davidson under ideal laboratory conditions. Not all motorcycle models undergo fuel economy testing. Fuel economy and mileage may vary among motorcycle models within a family. Your mileage may vary depending on your personal riding habits, weather conditions, trip length, vehicle condition and vehicle configuration and other conditions. Break-in mileage may vary.

6. Prices listed are the Manufacturer’s Suggested Retail Prices for base models. Options such as color are available at additional cost. Prices exclude tax, title, licensing, registration fees, destination charges, added accessories, and additional dealer charges, if any, and are subject to change. Harley-Davidson reimburses dealers for performing manufacturer-specified pre-delivery inspection and setup tasks. Dealer prices may vary.

7. Measurement reflects 180 lb. (81.7 kg) operator weight.

8. North America security system includes immobilizer; outside North America the security system includes immobilizer and siren.

9. Standard and optional wheels may vary by country and region.


Length: 90.9 in
Seat Height: 26.0 in
Dry Weight: 642 lbs
Fuel Capacity: 5.0 gal
Engine: Milwaukee-Eight™ 107
Displacement: 106.49 in3
Engine torque: 106.9 ft-lb
Front: Black, Laced Steel / 16" / Dunlop® D402F MT90
Rear: Black, Laced Steel / 16" / Dunlop® D402 MU85

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The paragraph descriptions for the pre-owned bikes are generic, what the factory used when the bikes were new so they might not be precise. The bike may have been modified. Take them with a grain of salt. Same with the specifications, those are stating how the bike was spec’d stock, when new, not necessarily as it is at this very moment. Our salespeople will be glad to answer any detailed questions should anything in the generic descriptions be confusing. Also, there are over 30,000 prices and loads of specifications on this website, we do not warrant that is entirely error free. Thanks, - Barnett Harley-Davidson