2025 Harley-Davidson Sportster S Specifications

Name: 2025 Harley-Davidson Sportster S
Brand: Harley-Davidson

Sport • Specs last verified 13 July 2026

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2025 Harley-Davidson Sportster S Overview

For 2025, Harley-Davidson offers the Sportster S as a sport motorcycle with 1252 cc on tap. The 2025 Harley-Davidson Sportster S is built around a Four stroke, 60° V-twin Revolution Max 1250, Chain-driven, DOHC, hydraulic self-adjusting lifters, intake & exhaust VVT, four valves per cylinder engine, a compression ratio of 12.0:1. Out on the road, the Sportster S delivers 121 hp @ 7500 rpm of peak power and 126 Nm @ 6000 rpm of torque. In everyday use, the 2025 Sportster S tips the scales at 228 kg, carries a 11.7-litre fuel tank, offers a seat height of 765 mm and spans a 1520 mm wheelbase. That's roughly 25.3 kg heavier than the average sport motorcycle in our database. Every technical detail, from suspension travel to tyre sizes, is covered in the full 2025 Harley-Davidson Sportster S spec sheet below.

2025 Sportster S - Pros & Cons

Strengths

Strong power output: Peak output on the Sportster S is 121 hp @ 7500 rpm and 126 Nm @ 6000 rpm of torque - strong numbers for what it is.
Fuel injection: No choke, no jetting, no altitude compensation to think about - fuel injection just works across a wider range of conditions than carburetion.
Low-maintenance final drive: Belt, 34/80 ratio final drive is about as close to maintenance-free as motorcycle drivetrains get.

Considerations

Modest fuel capacity: A 11.7-litre tank keeps things light but means budgeting for more frequent fuel stops on any longer ride.

Wear Points & Servicing Notes

Cooling system servicing

With Liquid cooled, thermal management is largely automatic, but the coolant has a service life of its own - replace it on the manufacturer's interval to protect the water passages and thermostat.

Fuelling & injector care

Fuelling on the Sportster S comes from Electronic Sequential Port Fuel Injection (ESPFI). Cold starts and throttle response stay consistent across altitude and temperature, the main practical edge over a carbureted equivalent.

Suspension condition on used examples

Suspension duties are handled by 43 mm inverted fork with compression, rebound and spring preload adjustability. Aluminium fork triple clamps up front and Linkage-mounted, piggyback monoshock with compression, rebound and hydraulic spring preload adjustability at the rear. Weeping fork seals aren't a dealbreaker on a used bike, but they're a fair basis for negotiating price.

Final drive maintenance

Belt final drive keeps day-to-day maintenance minimal on the Sportster S - just periodic tension and wear checks rather than the regular cleaning a chain demands.

Frame & chassis check

The Stressed-member, high strength low alloy steel trellis frame; stamped, cast, and forged junctions; MIG welded; aluminum forged mid-structure chassis holds up well with normal use; on a used bike it's still worth checking the head-stock and swingarm pivot area for impact damage or corrosion.

Handling the weight at a standstill

The Sportster S's 228 kg kerb weight is worth factoring into how you handle it at a standstill - parking-lot manoeuvres need a bit more deliberate technique than on a lighter machine.

Sportster S - Buying & Maintenance Guide

What to check before buying

A pre-purchase check on the 2025 Harley-Davidson Sportster S should cover the same ground every time: service history, chain and sprocket condition, and any oil seepage around the casings. Start it from cold if you can - a well-kept Sportster S settles to a smooth idle within seconds.

Oil and filter changes

Oil changes are the cheapest insurance you can buy for a Sportster S's engine - keep to the manufacturer's interval rather than stretching it. Use the viscosity grade the manual specifies, not whatever's on sale.

Fuel system care

Injector systems like the Sportster S's hold up well with basic care - decent fuel, an occasional cleaner additive, and draining old fuel before any layup longer than three months.

2025 Harley-Davidson Sportster S - Frequently Asked Questions

What engine does the 2025 Harley-Davidson Sportster S have?

The 2025 Harley-Davidson Sportster S uses a Four stroke, 60° V-twin Revolution Max 1250, Chain-driven, DOHC, hydraulic self-adjusting lifters, intake & exhaust VVT, four valves per cylinder engine with 1252 cc of displacement. It is liquid cooled.

How much does the 2025 Harley-Davidson Sportster S weigh?

The 2025 Harley-Davidson Sportster S weighs 228 kg. This is the manufacturer's wet figure.

How much power does the 2025 Harley-Davidson Sportster S make?

The 2025 Harley-Davidson Sportster S produces 121 hp @ 7500 rpm of power and 126 Nm @ 6000 rpm of torque. These are peak figures.

What is the fuel tank capacity of the 2025 Harley-Davidson Sportster S?

The 2025 Harley-Davidson Sportster S has a 11.7-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 195-233 km between stops.

Is the 2025 Harley-Davidson Sportster S suitable for shorter riders?

The 2025 Harley-Davidson Sportster S has a seat height of 765 mm. This is a moderate seat height that suits a wide range of rider heights.

What brakes does the 2025 Harley-Davidson Sportster S have?

The 2025 Harley-Davidson Sportster S uses Single 320mm rotor, radially mounted, monoblock, 4-piston caliper at the front and Single 260mm solid uniform expansion rotor, floating single piston caliper at the rear.

What tyre sizes does the 2025 Harley-Davidson Sportster S use?

The 2025 Harley-Davidson Sportster S runs 160/70TR17 73V Dunlop- Harley-Davidson Series, radial, GT503 front and 180/70R16 77V Dunlop- Harley-Davidson Series, radial, GT503 rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.

What gearbox does the 2025 Harley-Davidson Sportster S have?

The 2025 Harley-Davidson Sportster S is fitted with a 6 Speed transmission.

Harley-Davidson Sportster S Spec Evolution

The Harley-Davidson Sportster S was produced across 2 model years (2021-2025). The table below highlights the key specifications that changed across the production run - useful whether you are comparing years or tracking down a specific variant.

Specification	2021	2025
Dry Weight	220 kg / 486 lbs	221 kg / 487 lbs
Seat Height	753 mm / 29.6 in	765 mm / 30.1 in
Fuel Capacity	11.8 Litres / 3.1 US gal	11.7 Litres / 3.1 US gal
Wheelbase	1518 mm / 59.8 in	1520 mm / 59.8 in
Ground Clearance	93 mm / 3.66 in	90 mm / 3.5 in
Suspension - Front	43 mm inverted fork with compression, rebound and spring preload adjustability. Aluminum fork triple clamps	43 mm inverted fork with compression, rebound and spring preload adjustability. Aluminium fork triple clamps
Height	1089 mm / 42.9 in	1085 mm / 42.7 in
Length	2265 mm / 89.2 in	2270 mm / 89.42 in

Key Specifications

Engine

Four stroke, 60° V-twin Revolution Max 1250, Chain-driven, DOHC, hydraulic self-adjusting lifters, intake & exhaust VVT, four valves per cylinder

Power

121 hp / 90 kW @ 7500 rpm

Torque

126 Nm / 93 lb-ft @ 6000 rpm

Top Speed

Not published by manufacturer

Weight

228 kg / 502 lbs

Fuel Capacity

11.7 Litres / 3.1 US gal

Full 2025 Harley-Davidson Sportster S Specifications

Year 2025

Make Model Harley Davidson Sportster S

Seat Height 765 mm / 30.1 in

Wheelbase 1520 mm / 59.8 in

Ground Clearance 90 mm / 3.5 in

Height 1085 mm / 42.7 in

Length 2270 mm / 89.42 in

Seat Height (Laden) 734 mm / 28.9 in

Width 840 mm / 33.1 in

Dry Weight 221 kg / 487 lbs

Fuel Capacity 11.7 Litres / 3.1 US gal

Wet Weight 228 kg / 502 lbs

Max Power 121 hp / 90 kW @ 7500 rpm

Max Torque 126 Nm / 93 lb-ft @ 6000 rpm

Displacement 1252 cc / 76.4 cu-in

Engine Detail Four stroke, 60° V-twin Revolution Max 1250, Chain-driven, DOHC, hydraulic self-adjusting lifters, intake & exhaust VVT, four valves per cylinder

Bore x Stroke 105 x 72.3 mm

Compression Ratio 12.0:1

Cooling System Liquid cooled

Exhaust 2-into-1-into-2, catalyst in muffler

Fuel Induction Electronic Sequential Port Fuel Injection (ESPFI)

Lubrication Semi-dry sump

Starter Electric

Clutch Mechanical, 8 plate wet, assist & slip, 1090N

Final Drive Belt, 34/80 ratio

Gear Ratios 1st 12.21 / 2nd 9.022 / 3rd 6.994 / 4th 5.641 / 5th 4.731 / 6th 4.131

Primary Drive Gear, 49/89 ratio

Transmission / Drive 6 Speed

Frame Type Stressed-member, high strength low alloy steel trellis frame; stamped, cast, and forged junctions; MIG welded; aluminum forged mid-structure

Suspension - Front 43 mm inverted fork with compression, rebound and spring preload adjustability. Aluminium fork triple clamps

Suspension - Rear Linkage-mounted, piggyback monoshock with compression, rebound and hydraulic spring preload adjustability

Fork Angle 28°

Lean Angle 35°

Rake 30°

Swingarm High strength low alloy steel, tubular sections, stamped x-member, forged axle junctions; MIG welded

Trail 148 mm / 5.8 in

Wheel Travel - Front 92 mm / 3.6 in

Wheel Travel - Rear 82 mm / 3.2 in

Brakes - Front Single 320mm rotor, radially mounted, monoblock, 4-piston caliper

Brakes - Rear Single 260mm solid uniform expansion rotor, floating single piston caliper

ABS Standard

Rims - Front 4.5 x 17

Rims - Rear 5.0 x 16

Tyres - Front 160/70TR17 73V Dunlop- Harley-Davidson Series, radial, GT503

Tyres - Rear 180/70R16 77V Dunlop- Harley-Davidson Series, radial, GT503

Wheels Aluminum cast, satin black

Specifications are compiled from manufacturer documentation and cross-referenced technical sources, and corrected on an ongoing basis. Spot an error? Let us know.