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2021 Harley-Davidson Sport Glide Overview
Harley-Davidson Sport Glide is a custom / cruiser motorcycle, displacing 1746 cc. Power comes from a Four stroke, V-Twin, Milwaukee-Eight 107, pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder engine, a compression ratio of 10.0:1. On the performance side, it delivers 146 Nm @ 2750 rpm of torque. On the road, the 2021 Sport Glide tips the scales at 317 kg, carries a 18.9-litre fuel tank, offers a seat height of Unladen: 680 mm and spans a 1625 mm wheelbase. That's roughly 16.4 kg heavier than the average custom / cruiser motorcycle in our database. The full 2021 Harley-Davidson Sport Glide spec sheet below covers every technical detail, from suspension travel to tyre sizes.
2021 Sport Glide - Pros & Cons
Strengths
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🔧
Fuel injection: Fuel injection means consistent cold starts and clean throttle response without the fussiness of a carbureted setup.
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Accessible seat height: A Unladen: 680 mm seat height keeps this manageable for most riders, which helps confidence at parking-lot speeds.
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⛽
Large fuel range: A 18.9-litre tank means fewer stops on longer rides - a genuine plus for touring or a lengthy daily commute.
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⚙️
Low-maintenance final drive: Running Belt, 32/66 ratio final drive cuts out the regular chain cleaning and tensioning that most bikes need.
Considerations
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ℹ️
Age-related wear: Nothing specific stands out as a weak point on the Sport Glide - the usual used-bike checks (service history, consumables, tyres) apply.
Wear Points & Servicing Notes
Heat management in traffic
Because the Sport Glide relies on airflow rather than a coolant jacket, expect noticeably more radiant heat at low speed and in traffic. It's inherent to air cooling, and ventilated gear largely offsets it.
Fuelling & injector care
The Electronic Sequential Port Fuel Injection (ESPFI) on the Sport Glide needs little beyond good fuel and periodic use of an injector-cleaner additive - no jetting or float-bowl maintenance to worry about.
Brake disc and pad wear
Braking up front comes from Single 300 mm discs, 4 piston fixed caliper - solid stopping power, with disc and pad wear best checked on the same schedule as tyre changes.
Suspension condition on used examples
The Sport Glide's suspension runs Single cartridge 43 mm inverted with aluminum fork triple clamps, triple rate spring at the front. The rear uses Hidden, free piston, coil-over monoshock, 43mm stroke, toothless hydraulic pre-load adjustment. Fork-seal condition and rear linkage play are the two things worth checking before buying used.
Final drive maintenance
The Sport Glide runs belt final drive: no lubrication or frequent adjustment like a chain, though belt tension and wear are worth a periodic look.
Frame & chassis check
Built around a Mild steel, tubular frame, rectangular section backbone, stamped, cast, and forged junctions, MIG welded, aluminum forged fender supports, the Sport Glide's chassis is straightforward to inspect: look for corrosion, cracks or repair welds around stress points like the head-stock and swingarm mounts.
Handling the weight at a standstill
317 kg puts the Sport Glide toward the heavier end of its class. It's most noticeable at walking pace; once underway the mass settles into the handling rather than fighting it.
Sport Glide - Buying & Maintenance Guide
What to check before buying
Before handing over money for a used 2021 Harley-Davidson Sport Glide, cover the fundamentals: service book and oil change history, chain and sprocket wear, and any sign of oil weeping around the casings. Cold-starting it yourself tells you a lot - a healthy Sport Glide should catch quickly and settle into a smooth idle.
Oil and filter changes
Nothing protects a Sport Glide's engine like disciplined oil changes - stay on the manufacturer's schedule (roughly every 6,000 km or annually). Match the viscosity grade to what the owner's manual specifies, not what's cheapest.
Fuel system care
Fuel injection on the Sport Glide needs little attention beyond decent fuel and an occasional system-cleaner additive. Anything left standing for three months or more should have its fuel drained and replaced before it varnishes the injectors.
2021 Harley-Davidson Sport Glide - Frequently Asked Questions
What engine does the 2021 Harley-Davidson Sport Glide have?
The 2021 Harley-Davidson Sport Glide uses a Four stroke, V-Twin, Milwaukee-Eight 107, pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder engine with 1746 cc of displacement. It is air cooled.
How much does the 2021 Harley-Davidson Sport Glide weigh?
The 2021 Harley-Davidson Sport Glide weighs 317 kg. This is the manufacturer's wet figure.
How much power does the 2021 Harley-Davidson Sport Glide make?
The 2021 Harley-Davidson Sport Glide produces 146 Nm @ 2750 rpm of torque.
What is the fuel tank capacity of the 2021 Harley-Davidson Sport Glide?
The 2021 Harley-Davidson Sport Glide has a 18.9-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 315-377 km between stops.
Is the 2021 Harley-Davidson Sport Glide suitable for shorter riders?
The 2021 Harley-Davidson Sport Glide has a seat height of Unladen: 680 mm. This is a comfortable, accessible height for most riders.
What brakes does the 2021 Harley-Davidson Sport Glide have?
The 2021 Harley-Davidson Sport Glide uses Single 300 mm discs, 4 piston fixed caliper at the front and Single 292 mm disc, 2 piston floating caliper at the rear.
What tyre sizes does the 2021 Harley-Davidson Sport Glide use?
The 2021 Harley-Davidson Sport Glide runs 130/70B18 63H BW front and 180/70B16 77H BW rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.
What gearbox does the 2021 Harley-Davidson Sport Glide have?
The 2021 Harley-Davidson Sport Glide is fitted with a 6 Speed transmission.
Key Specifications
Engine
Four stroke, V-Twin, Milwaukee-Eight 107, pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder
Power
Not published by manufacturer
Torque
146 Nm / 108 ft-lb @ 2750 rpm
Top Speed
Not published by manufacturer
Fuel Capacity
18.9 Litres / 5.0 US gal
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Full 2021 Harley-Davidson Sport Glide Specifications
Year
2020 - 21
Make Model
Harley Davidson Sport Glide
Seat Height
Unladen: 680 mm / 26.8 in Laden : 653 mm / 25.7 in
Wheelbase
1625 mm / 64 in
Ground Clearance
120 mm / 4.7 in
Height
1120 mm / 44.1 in
Length
2325 mm / 91.5 in
Width
960 mm / 37.8 in
Dry Weight
304 kg / 670 lbs
Fuel Capacity
18.9 Litres / 5.0 US gal
Oil Capacity
4.7 Litres / 5 US qt
Wet Weight
317 kg / 699 lbs
Displacement
1746 cc / 107 cu-in
Engine Detail
Four stroke, V-Twin, Milwaukee-Eight 107, pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder
Bore x Stroke
100 x 111 mm
Compression Ratio
10.0:1
Cooling System
Air cooled
Exhaust
2-into-1, catalyst in muffler
Fuel Induction
Electronic Sequential Port Fuel Injection (ESPFI)
Ignition
Single-fire, non-wasted, map-controlled spark ignition
Lubrication
Pressurized, dry-sump with oil cooler
Starter
Electric
Clutch
Mechanical, 10 plate wet, assist & conventional
Final Drive
Belt, 32/66 ratio
Gear Ratios
1st 9.311 / 2nd 6.454 / 3rd 4.793 / 4th 3.882 / 5th 3.307 / 6th 2.79:1
Primary Drive
Chain, 34/46 ratio
Transmission / Drive
6 Speed
Frame Type
Mild steel, tubular frame, rectangular section backbone, stamped, cast, and forged junctions, MIG welded, aluminum forged fender supports
Suspension - Front
Single cartridge 43 mm inverted with aluminum fork triple clamps, triple rate spring
Suspension - Rear
Hidden, free piston, coil-over monoshock, 43mm stroke, toothless hydraulic pre-load adjustment
Lean Angle
27.4°
Rake
30°
Swingarm
Mild steel, tubular sections, stamped x-member, forged axle junctions, MIG welded, removable belt spacer
Trail
150 mm / 5.9 in
Wheel Travel - Front
130 mm / 5.1 in
Wheel Travel - Rear
86 mm / 3.4 in
Brakes - Front
Single 300 mm discs, 4 piston fixed caliper
Brakes - Rear
Single 292 mm disc, 2 piston floating caliper
ABS
Standard
Tyres - Front
130/70B18 63H BW
Tyres - Rear
180/70B16 77H BW
Wheels
Black, machine highlighted, Mantis cast aluminum
Specifications are compiled from manufacturer documentation and cross-referenced
technical sources, and corrected on an ongoing basis.
Spot an error? Let us know.
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