Model Year 2021 | Softail | Softail Slim®

In Brief

Get the classic look of spoked wheels, chopped fenders and floorboards on the Softail Slim®. It’s 35 pounds lighter, with greater lean angle than Slim models from just a couple years ago. And it has the power and soul-satisfying sound of the Milwaukee-Eight® 107 V-Twin engine.

 

Product availability differs by countries, please contact local H-D office for details.

Specifications

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ModelFLSL Softail Slim®Notes
Dimensions
Length90.9 in. (2,310 mm)
Overall Width38.2 in. (970 mm)
Overall Height43.1 in. (1,095 mm)
Seat Height, Laden25.5 in. (648 mm)2
Seat Height, Unladen26 in. (660 mm)
Ground Clearance4.7 in. (120 mm)
Rake (steering head) (deg)30
Fork Angle (deg)30
Trail5.8 in. (147 mm)
Wheelbase64.2 in. (1,630 mm)
Tires, TypeDunlop® Harley-Davidson Series, bias blackwall front and rear
Tires, Front ModelD401F
Tires, Front Specification130/90B16,73H,BW
Tires, Rear ModelD401T
Tires, Rear Specification150/80B1677H,BW
Fuel Capacity5 gal. (18.9 l)
Reserve Fuel Capacity, Fuel Injection (warning light)1 gal. (3.8 l)
Oil Capacity (w/filter)5 qt. (4.7 l)
Transmission Capacity1 qt. (.95 l )
Primary Chain Case Capacity1.25 qt. (1.18 l )
Coolant CapacityN/A
Weight, As Shipped642 lb. (291 kg)
Weight, In Running Order671 lb. (304 kg)
Gross Vehicle Weight Rating1,160 lb. (526 kg)
Gross Axle Weight Rating, Front450 lb. (204 kg)
Gross Axle Weight Rating, Rear730 lb. (331 kg)
Luggage Capacity -VolumeN/A
Engine
EngineMilwaukee-Eight® 107
ValvesPushrod-operated, overhead valves
with hydraulic, self-adjusting lifters;
four valves per cylinder
Bore3.937 in. (100 mm)
Stroke4.374 in. (111 mm)
Displacement107 cu in (1,746 cc)
Compression Ratio10.0:1
Fuel SystemElectronic Sequential Port Fuel Injection (ESPFI)3
Air Cleaner8.5 in. round, center bolt cover with washable fiberglass filter media
Exhaust2-into-2 shotgun; catalyst in muffler
Lubrication SystemPressurized, dry-sump with oil cooler
Drivetrain
Primary DriveChain, 34/46 ratio
Final DriveBelt, 32/66 ratio
ClutchMechanical, 10 plate wet, assist & conventional
Transmission6-Speed Cruise Drive®
Gear Ratios (overall) 1st9.311
Gear Ratios (overall) 2nd6.454
Gear Ratios (overall) 3rd4.793
Gear Ratios (overall) 4th3.882
Gear Ratios (overall) 5th3.307
Gear Ratios (overall) 6th2.79
Chassis
FrameMild steel, tubular frame; rectangular section backbone; stamped, cast, and forged junctions; MIG welded; aluminum forged fender supports
SwingarmMild steel, tubular sections, stamped x-member, forged axle junctions; MIG welded; removable belt spacer
Front ForkDual-bending valve 49 mm telescopic with aluminum fork triple clamps; dual rate spring; "beer can" covers
Rear ShocksHidden, free piston, coil-over monoshock; 43mm stroke; cam-style pre-load adjustment
Wheels, Front TypeGloss Black, Steel Laced4
Wheels, Front Width3 in. (76 mm)
Wheels, Front Height16 in. (406 mm)
Wheels, Rear TypeGloss Black, Steel Laced4
Wheels, Rear Width3 in. (76 mm)
Wheels, Rear Height16 in. (406 mm)
Brakes, Caliper Type4-piston fixed front and 2-piston floating rear
Brakes, Rotor TypeSolid, uniform expansion rotors
Brakes, Front Diameter11.8 in. (300 mm)
Brakes, Front Thickness0.2 in. (5.1 mm)
Brakes, Front is dualNo
Brakes, Rear Diameter11.5 in. (292 mm)
Brakes, Rear Thickness0.23 in. (5.8 mm)
Brakes, Anti-Lock Braking System (ABS)Optional
Suspension Travel, Front5.1 in. (130 mm)
Suspension Travel, Rear3.4 in. (86 mm)
Performance
Engine Torque Testing MethodJ1349
Engine Torque110 ft-lb (149 Nm)5
Engine Torque (rpm)3,000
Lean Angle Testing MethodJ1168
Lean Angle, Right (deg.)27.4
Lean Angle, Left (deg.)27.4
Fuel Economy Testing MethodEstimated City/Hwy
Fuel Economy47 mpg (5 l/100 km)6
Electric
BatterySealed, maintenance-free, absorbed glass mat (AGM) battery, 12V, 17.5Ah, 310 CCA at 0°F
ChargingThree-phase, 42 Amp system (390 Watts @13 Volts, 1000 rpm, 546 Watts max power @ 13 Volts, 2000 rpm)
Starting1.6 kW electric with solenoid shift starter motor engagement
Lights (as per country regulation), HeadlampAll LED, low beam, high beam and signature position lamp
Lights (as per country regulation), Tail/StopIncandescent bullets
Lights (as per country regulation), Front Signal LightsIncandescent bullets
Lights (as per country regulation), Indicator LampsHigh beam, turn signals, neutral, low oil pressure, engine diagnostics, ABS (if equipped), security, low battery voltage, low fuel7
Lights, Rear Turn SignalsN/A
Gauges5-inch analog speedometer with digital gear, odometer, fuel level, clock, trip, range and tachometer indication
Auxiliary LampsN/A
Electric Power OutletUSB A-type; output 5V at 2.4A
GPS SystemN/A
Reverse GearN/A
Warranty And Service
Warranty24 months (unlimited mileage)8
Service IntervalFirst 1,000 miles (1600 km), every 5,000 miles (8,000 km) thereafter9
Footnotes
1Vehicles depicted may differ from vehicles manufactured and delivered. Specifications and prices listed may differ from specifications and prices of vehicles manufactured and delivered. All product descriptions (including depictions, specifications, dimensions, measurements, ratings and competitive comparisons) are based on available information at the time of publication. Although such descriptions are believed correct, errors and changes can occur and complete accuracy cannot be guaranteed. Harley-Davidson may make changes at any time to prices and specifications, and may change or discontinue models, without notice and without incurring any obligation. Attention: Vehicles in the configurations shown and many of the accessories described in this catalog may not be available for sale or use in some locations. Please check with your dealer for complete product details and the latest information. All models feature 6-speed transmission (VRSC™ models and Sportster® models are 5-speed) and carbon fiber belt final drive; multi-plate clutch with diaphragm spring in oil bath; and 2-year unlimited mileage warranty.
2Measurement reflects 180 lb. (81.7 kg) operator weight.
3Recommended 91 octane or higher fuel (R+M)/2.
4Standard and optional wheels may vary by country and region.
5Values shown are nominal. Performance may vary by country and region.
6The combined fuel economy numbers were derived using a combination of estimated city and highway values. Fuel economy estimates are derived from US EPA exhaust emission certification data on a sample motorcycle from the corresponding family under ideal laboratory conditions. Your actual fuel economy will vary depending on your personal riding habits, road and driving conditions, vehicle condition and maintenance, tire pressure, vehicle configuration (parts and accessories), and vehicle loading (cargo, rider and passenger weight). Break-in mileage may vary.
7North America security system includes immobilizer; outside North America the security system includes immobilizer and siren.
8See motorcycle owner’s manual for complete details.
9Inspections of certain systems and components are required at 2,500 mile (4,000 km) intervals. See Owner’s Manual for full details.
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