Harley-Davidson Sportster S Specs, Top Speed & Performance Review
TL;DR
- The Harley-Davidson Sportster S is powered by the Revolution Max 1250T, a 1,252cc liquid-cooled V-twin producing 121 HP and 93 lb-ft of torque.
- Top speed is approximately 137-143 mph based on independent testing; Harley-Davidson does not publish an official figure.
- 0-60 mph takes around 3.4 seconds in independent testing, making it among the quickest stock Harleys ever built.
- MSRP starts at $15,999 for the 2025 and 2026 model years.
- Best suited for experienced riders who want a modern, performance-focused Harley with genuine sport credentials.
Harley-Davidson Sportster S Specs
The Sportster S arrived in 2021 as a clean break from the air-cooled Sportster lineage. It runs the Revolution Max 1250T – a DOHC, liquid-cooled 60-degree V-twin shared with the Pan America 1250, tuned for torquier street performance. Here are the full specs for the 2025/2026 model year.
| Spec | Detail |
|---|---|
| Engine | Revolution Max 1250T, DOHC, liquid-cooled V-twin |
| Displacement | 1,252cc (76.4 cu in) |
| Bore x Stroke | 105 mm x 72.3 mm |
| Compression Ratio | 13.0:1 |
| Horsepower | 121 HP @ 7,500 rpm |
| Torque | 93 lb-ft @ 6,000 rpm |
| Transmission | 6-speed, wet clutch, belt final drive |
| Frame | High-strength steel trellis |
| Front Suspension | 43 mm fully adjustable inverted fork |
| Rear Suspension | Linkage piggyback monoshock, fully adjustable; 3.2 in travel (2025+) |
| Front Brake | Brembo radially mounted 4-piston caliper, single disc |
| Rear Brake | Single-piston floating caliper, single disc |
| Front Tire | 160/70 R17 |
| Rear Tire | 180/70 R16 |
| Seat Height | 29.4 in (unladen) / 28.9 in (laden) |
| Weight (running order) | 502 lb |
| Fuel Capacity | 3.1 gal |
| MSRP (2025/2026) | $15,999 |
Variable valve timing (VVT) is standard. It lets the engine pull hard from low rpm and still rev cleanly to redline – a detail that makes the power delivery feel wider and more usable than the spec sheet suggests.
Sportster S Top Speed and Acceleration
The Sportster S reaches approximately 137-143 mph based on independent road testing. Harley-Davidson does not publish an official top speed. FastestLaps.com recorded 137 mph in controlled conditions; TopSpeed reported up to 143 mph under optimal circumstances (FastestLaps.com, 2024; TopSpeed, 2023). The range reflects rider weight, wind conditions, and run-in state.
Zero to 60 mph lands at approximately 3.4 seconds (SlashGear, 2024). For a 502-pound cruiser, that’s genuinely quick. The 93 lb-ft of torque peaks at 6,000 rpm, but the engine loads up around 3,500 and pulls hard all the way through. Sport mode sharpens throttle response noticeably – it catches riders used to older air-cooled Harleys off guard the first time.
Quarter-mile time isn’t officially published; based on the 0-60 figure and comparable machinery, expect the high 11 to low 12-second range at around 110-115 mph.
| Performance Metric | Figure | Source |
|---|---|---|
| Top Speed | ~137-143 mph | FastestLaps.com / TopSpeed |
| 0-60 mph | ~3.4 sec | SlashGear, 2024 |
| Horsepower | 121 HP @ 7,500 rpm | Harley-Davidson, 2025 |
| Torque | 93 lb-ft @ 6,000 rpm | Harley-Davidson, 2025 |
Engine and Chassis
The Revolution Max 1250T is a structural engine – it carries chassis load, which keeps the package compact and drops weight where it counts. Dual overhead cams, four valves per cylinder, and VVT were genuinely bold choices for a brand historically conservative about engine architecture.
On the road it idles with authority, pulls cleanly through the low range, and builds to a hard midrange rush. It’s a rev-friendly engine by Harley standards, comfortable at highway speed in sixth with plenty of throttle left.
The 43 mm fully adjustable inverted fork is serious suspension hardware. For 2025, rear travel went from 2.0 to 3.2 inches without raising seat height – a real-world improvement over broken pavement. Brembo handles braking front and rear. The four-piston radial caliper gives progressive, confident feel.
The 160-series front tire on a 17-inch wheel is wider than any previous Sportster. Cornering is confident and the bike changes direction with a quickness that doesn’t match its weight.
Electronics and Ride Modes
Five ride modes come standard: Road, Sport, Rain, and two configurable slots. Each adjusts throttle mapping, traction control, and engine braking. Rain mode softens response enough that the torque doesn’t catch you out on wet lane markings.
The full package includes cornering ABS, traction control, drag-torque slip control (DSCS), tire pressure monitoring (TPMS), and wheel lift mitigation. A 4-inch round TFT display, readable in direct sunlight, handles instrumentation and connects to the Harley-Davidson app for turn-by-turn navigation.
Strengths and Limitations
The Revolution Max 1250T delivers 121 HP and 93 lb-ft from a 1,252cc V-twin – a legitimate performance number. The fully adjustable suspension, Brembo brakes, and complete electronics suite would cost significantly more as aftermarket additions on a comparable cruiser. The blacked-out aesthetic is clean and purposeful.
Where it falls short: the 3.1-gallon tank limits range to roughly 120-130 miles at a realistic 40-45 mpg. No cruise control comes standard – it requires an add-on at $15,999 base. At 502 pounds, newer riders have dropped it in parking lots.
Who Should Buy the Sportster S
The Sportster S is best suited for experienced riders who want a modern, performance-focused platform that reads as unmistakably Harley. It’s not a beginner bike. The throttle response is immediate, and 502 pounds requires confident low-speed handling.
It works well as a primary city and highway machine for someone who rides daily and wants a bike that handles weekend canyon runs as competently as weekday commuting. Riders around five-foot-four to five-foot-six may touch down on only one foot at stops.
At $15,999, adjustable suspension, Brembo brakes, cornering ABS, and VVT in the same package is a competitive spec at this price point.
Frequently Asked Questions About the Harley-Davidson Sportster S
What is the top speed of the Harley-Davidson Sportster S?
Independent testing puts top speed between 137 and 143 mph. FastestLaps.com recorded 137 mph; TopSpeed reported up to 143 mph. Harley-Davidson does not publish an official figure, so these independently tested ranges are the best available reference.
How fast does the Sportster S do 0-60 mph?
The Sportster S reaches 60 mph in approximately 3.4 seconds based on independent testing (SlashGear, 2024). It’s one of the quickest 0-60 figures ever recorded for a stock Harley-Davidson.
What engine does the Sportster S use?
The Revolution Max 1250T – a 1,252cc DOHC, liquid-cooled 60-degree V-twin with variable valve timing and four valves per cylinder. The same architecture powers the Pan America 1250 at 150 HP; the Sportster S version is calibrated for 121 HP and 93 lb-ft for torquier street use.
Is the Harley-Davidson Sportster S good for beginners?
No. The aggressive throttle response, immediate power delivery, and 502-pound running weight make it a better fit for experienced riders. Newer riders are better served starting on something lighter before moving up.
What is the MSRP of the 2025 and 2026 Sportster S?
Both start at $15,999 before the approximately $730 destination charge. Fully accessorized models can reach $20,000 or more.
Does the Sportster S have ABS?
Yes – cornering ABS, which adjusts braking force based on lean angle, not just straight-line deceleration. It’s paired with Brembo hardware front and rear.
Key Takeaways
- The Revolution Max 1250T produces 121 HP and 93 lb-ft of torque; independently tested top speed runs 137-143 mph and 0-60 is around 3.4 seconds.
- Fully adjustable 43 mm inverted fork and rear monoshock with 3.2 inches of travel (2025+) back up the performance claims with real suspension hardware.
- Brembo four-piston radial front caliper and cornering ABS are standard, not optional.
- Five ride modes, VVT, and a complete electronic rider aid package make this the most technically sophisticated Sportster ever built.
- The 3.1-gallon tank limits range to roughly 120-130 miles; no cruise control comes standard.
- At $15,999, the Sportster S offers a genuine performance spec sheet for experienced riders wanting a modern, sport-capable Harley.
