2018 Harley-Davidson Sportster SuperLow

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Engine

Engine Air-cooled, Evolution®
Bore 3 in.
Stroke 3.811 in.
Displacement 53.9 cu in
Compression Ratio 9:01
Fuel System 3 Electronic Sequential Port Fuel Injection (ESPFI)
Exhaust Chrome, staggered, shorty exhaust with dual mufflers

Dimensions

Length 87.6 in.
Seat Height, Laden 7 25.5 in.
Seat Height, Unladen 27.8 in.
Ground Clearance 3.9 in.
Rake (steering head) (deg) 31.1
Trail 5.7 in.
Wheelbase 59.1 in.
Tires, Front Specification 120/70 ZR-18 59W
Tires, Rear Specification 150/60 ZR-17 66W
Fuel Capacity 4.5 gal.
Oil Capacity (w/filter) 2.8 qt.
Weight, As Shipped 545 lb.
Weight, In Running Order 569 lb.

Performance

Engine Torque Testing Method J1349
Engine Torque 2 54.6 ft-lb
Engine Torque (rpm) 3,750
Lean Angle, Right (deg.) 24.7
Lean Angle, Left (deg.) 24.4
Fuel Economy: Estimated City/Hwy 51 mpg

Drivetrain

Primary Drive Chain, 34/57 ratio
Gear Ratios (overall) 1st 10.41
Gear Ratios (overall) 2nd 7.436
Gear Ratios (overall) 3rd 5.531
Gear Ratios (overall) 4th 4.584
Gear Ratios (overall) 5th 3.931

Chassis

Wheels, Front Type 9 Black, Split 5-Spoke with Machined Rim
Wheels, Rear Type Black, Split 5-Spoke with Machined Rim
Brakes, Caliper Type Dual-piston front, Dual-piston rear

Electric

Lights (as per country regulation), Indicator Lamps 8 High beam, neutral, low oil pressure, turn signals, engine diagnostics, low fuel warning, low battery, security system (optional)
Gauges Handlebar-mounted electronic speedometer with odometer, time-of-day clock, dual tripmeter, low fuel warning light, low oil pressure light, engine diagnostics readout, LED indicator lights

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.