Home / Harley-Davidson / Low Rider S

Harley-Davidson · Performance cruiser · M-8 117 High Output

2026 Harley-Davidson Low Rider S: specs, gearing and calculators

The most powerful engine in the range, the Milwaukee-Eight 117 High Output, with 28 degrees of rake, a 19-inch front and the shortest wheelbase. Every figure below links to its source, and every calculator opens with the Low Rider S’s own numbers.

2026 Harley-Davidson Low Rider S in blue parked by an overpass
2026 Harley-Davidson Low Rider S in blue parked by an overpass. Photo: Harley-Davidson

Know your version. The Low Rider S was a Dyna until 2017 and a Softail from 2020. Its 117 High Output engine has more power and torque higher in the rev range than the 117 Classic and Custom, so performance figures from other Softails do not apply.


Engine
Milwaukee-Eight 117 High Output, 1,923 cc [src]
Power / torque
114 hp / 128 lb-ft (claimed, US) [src]
Weight
670 lb (304 kg) running order [src]
Seat height
27.0 in (686 mm) laden [src]
Rake / trail
28° / 5.7 in [src]
US price
$18,999–$19,999 [src]

MotoWild Lab

Calculators with the Low Rider S’s numbers filled in

All calculators →

Each one opens with the published figures for the 2026 Low Rider S: the Milwaukee-Eight 117’s bore and stroke, the gear ratios, belt pulleys, tyre sizes, rake and weight. Change any number to match your bike, see the formula worked through, and switch between imperial and metric.

EngineEngine displacement calculatorBore, stroke and number of cylinders to cc and cubic inches.Filled in: Bore, stroke, cylindersEnginePower from torque and rpmConvert torque at an rpm into kW and horsepower.Filled in: Claimed peak torque and its rpmEngineBMEP calculator (brake mean effective pressure)How much torque an engine makes for its size, as an average cylinder pressure.Filled in: Peak torque and displacementEngineMean piston speed calculatorAverage piston speed from stroke and rpm, the classic measure of how hard an engine is revving.Filled in: Stroke, rpm at peak powerEngineBig bore and stroker kit calculatorNew displacement and compression ratio after a bigger bore, a longer stroke or both.Filled in: Stock engine; new bore set to 4.25 in as an exampleEngineDynamic compression ratio calculatorEffective compression once the intake valve closes, from static ratio, rod length and cam timing.Filled in: Bore, stroke, compression; add your rod length and cam cardGearing and chainSpeed in every gear calculator (gear chart)Road speed in all six gears at one rpm, from primary, gearbox and final drive ratios.Filled in: All six gears, primary, belt and rear tyreGearing and chainCruising rpm calculatorEngine rpm at a given road speed in any gear.Filled in: 70 mph in 6th, stock gearing and tyreGearing and chainBelt drive pulley change calculatorHow far the rear axle moves, and how the gearing changes, when you fit different belt pulleys.Filled in: Stock pulleys; enter your belt's tooth countTyres and wheelsTyre size calculatorSidewall height, overall diameter and circumference from a size such as 120/70-17.Filled in: Stock rear tyre 180/70-16Tyres and wheelsSpeedometer error after a tyre size changeHow far off the speedometer reads with a different tyre size.Filled in: Stock rear tyre; enter the new sizeChassis and suspensionRake and trail calculatorGround trail from steering head angle, fork offset and front wheel size.Filled in: Published rake; offset worked back from the published trailPerformance and airPower-to-weight ratio calculatorkW per tonne, hp per tonne and kg per hp, with or without the rider.Filled in: Claimed power, running-order weightPerformance and airAltitude and temperature power loss calculatorAir density at altitude and how much power a naturally aspirated engine loses.Filled in: Claimed power at Denver's 5,280 ftPerformance and airFuel range calculatorHow far a tank goes, and how far until the reserve, at your fuel consumption.Filled in: Tank; enter your consumption

2026 Low Rider S specifications

Figures as published, with the sources underneath. Power and torque are Harley-Davidson’s US ratings; seat height is laden (with a rider aboard) unless stated.

Spec2026 Harley-Davidson Low Rider S
EngineMilwaukee-Eight 117 High Output, 1,923 cc (117 cu in) 45° V-twin
Power (claimed)114 hp (85 kW) at 5,000 rpm
Torque (claimed)128 lb-ft (174 N·m) at 4,000 rpm
Bore × stroke103.5 × 114.3 mm (4.075 × 4.5 in)
Compression ratio10.3:1
Weight670 lb (304 kg) in running order
Seat height27.0 in (686 mm) laden; 715 mm unladen
Fuel tank5 US gal (18.9 L)
Rake / trail28° / 5.7 in (145 mm)
Wheelbase63.6 in (1615 mm)
Wheels19 / 16 in
Transmission6-speed; primary chain 34/46, final belt 32/66
Gear ratios (overall)9.311 / 6.454 / 4.793 / 3.882 / 3.307 / 2.79
US price$18,999–$19,999 (sources differ)
Ground clearance5.7 in (145 mm)
Dry weight644 lb (292 kg)

Sources: motorcycle.com · totalmotorcycle.com · torquepedia.com · harley-davidson.com · topspeed.com · nawarhorse.com. Where sources disagree we show the range.

Gearing

Low Rider S gear ratios and road speed in every gear

Six speeds, a 34/46 primary chain and a 32/66 final belt. The table works the published overall ratios back to the gearbox ratios and gives road speed at three engine speeds.

GearGearbox ratioOverall ratioAt 2,000 rpmAt 3,000 rpmAt 4,000 rpm
13.3379.31117 mph 27 km/h25 mph 40 km/h33 mph 53 km/h
22.3136.45424 mph 38 km/h36 mph 58 km/h48 mph 77 km/h
31.7184.79332 mph 52 km/h48 mph 78 km/h64 mph 104 km/h
41.3913.88240 mph 64 km/h60 mph 96 km/h79 mph 128 km/h
51.1853.30747 mph 75 km/h70 mph 113 km/h93 mph 150 km/h
61.0002.79055 mph 89 km/h83 mph 133 km/h111 mph 178 km/h

In 6th: 60 mph: 2,170 rpm · 70 mph: 2,530 rpm · 80 mph: 2,900 rpm

Gearbox ratios are the published overall ratios divided by the primary (46/34) and belt (66/32) ratios. Speeds use the rear tyre's unloaded circumference (2,068 mm); under load it rolls a few percent shorter, so real rpm is slightly higher. Published overall ratios: torquepedia.com.

Make your own gear chart or see what a pulley change does →

Tyres and wheels

Stock tyre sizes

Confirm against the sidewalls on your bike and the owner’s manual, including the load index, speed rating and whether the tyre is bias (B) or radial (R).

Version and yearsFrontRearRimsSource
Harley-Davidson Low Rider S
2026		110/90B19180/70B1619 / 16 inmotorcycle.com

Side by side

Low Rider S vs Low Rider ST

The same figures for both, on the same basis.

Head-to-head · MotoWild data

2026 Harley-Davidson Low Rider S in blue parked by an overpassLOW RIDER S2026 Harley-Davidson Low Rider SRiding a 2026 Harley-Davidson Low Rider ST in whiteLOW RIDER ST2026 Harley-Davidson Low Rider ST
  • The lowest standard seats here are close: the 2026 Harley-Davidson Low Rider S (686 mm) and the 2026 Harley-Davidson Low Rider ST (686 mm).
  • Ready to ride, the 2026 Harley-Davidson Low Rider S is the lightest here, roughly 19 kg (42 lb) less than the 2026 Harley-Davidson Low Rider ST. Makers weigh differently, so treat small gaps as a draw.

Seat height (laden, as published)

2026 Harley-Davidson Low Rider S686 mm
2026 Harley-Davidson Low Rider ST686 mm

A range means sources disagree. Lower is easier at a stop, but weight and seat width matter too.

Weight, ready to ride

2026 Harley-Davidson Low Rider S304 kg · running order, claimed
2026 Harley-Davidson Low Rider ST323 kg · running order, claimed

Figures as published, with their basis. Wet, kerb and full-tank weights are close but not identical, so a few kilos either way is a draw.

Fuel tank

2026 Harley-Davidson Low Rider S18.9 L
2026 Harley-Davidson Low Rider ST18.9 L
Spec2026 Harley-Davidson Low Rider S2026 Harley-Davidson Low Rider ST
EngineMilwaukee-Eight 117 High Output, 1,923 cc (117 cu in) 45° V-twinMilwaukee-Eight 117 High Output, 1,923 cc (117 cu in) 45° V-twin
Power (claimed)114 hp (85 kW) at 5,000 rpm114 hp (85 kW) at 5,000 rpm
Torque (claimed)128 lb-ft (174 N·m) at 4,000 rpm128 lb-ft (174 N·m) at 4,000 rpm
Weight670 lb (304 kg) in running order712 lb (323 kg) in running order
Seat height27.0 in (686 mm) laden; 715 mm unladen27.0 in (686 mm) laden; 715 mm unladen
Fuel tank5 US gal (18.9 L)5 US gal (18.9 L), including about 1 gal (3.8 L) reserve
Rake / trail28° / 5.7 in (145 mm)28° / 5.7 in (145 mm)
Wheelbase63.6 in (1615 mm)63.6 in (1615 mm)
US price$18,999–$19,999 (sources differ)$23,999 (starting MSRP)
Tyres110/90B19 / 180/70B16
19 / 16 in		110/90B19 / 180/70B16
19 / 16 in

Versions and model years

  • Harley-Davidson Low Rider S: The Low Rider S was a Dyna until 2017 and a Softail from 2020. Its 117 High Output engine has more power and torque higher in the rev range than the 117 Classic and Custom, so performance figures from other Softails do not apply.
  • Harley-Davidson Low Rider ST: The Low Rider ST was introduced for 2022. It shares the Low Rider S chassis and engine, but the fairing and saddlebags add about 42 lb, which matters for payload and suspension setup.

Figures: motorcycle.com · totalmotorcycle.com · torquepedia.com · harley-davidson.com · topspeed.com · nawarhorse.com · motorcycle.com · totalmotorcycle.com · aeharley.com · harley-davidson.com · carcody.com.

All eight 2026 cruisers in one table →

Model history

Which Low Rider S do you have?

Engines and frames have changed over the years, so older bikes have different figures.

  1. 1977

    First Low Rider

    The FXS Low Rider appears as a low-slung factory custom. [src]

  2. 2016

    Low Rider S

    The first Low Rider S, then a Dyna, with a bigger engine and sportier chassis. [src]

  3. 2020

    Softail Low Rider S

    The Low Rider S returns on the Softail chassis with the Milwaukee-Eight. [src]

  4. 2026

    Current model

    Milwaukee-Eight 117 High Output: 114 hp at 5,000 rpm and 128 lb-ft at 4,000 rpm claimed. [src]

2026 Low Rider S in pictures

2026 Harley-Davidson Low Rider S in blue, studio side view
2026 Harley-Davidson Low Rider S in blue, studio side view. Photo: Harley-Davidson
2026 Harley-Davidson Low Rider S in black, studio side view
2026 Harley-Davidson Low Rider S in black, studio side view. Photo: Harley-Davidson

Harley-Davidson guides and comparisons

Milwaukee-Eight 117 Big Bore and Stroker Math: Displacement and CompressionHarley-Davidson · GuidesMilwaukee-Eight 117 Big Bore and Stroker Math: Displacement and CompressionWhat a bigger bore or longer stroke does to a 117: cubic inches, compression with the same clearance volume, and why kits…Updated Oct 27, 2026Harley-Davidson Belt Drive: Pulley Changes, Belt Length and Axle PositionHarley-Davidson · GuidesHarley-Davidson Belt Drive: Pulley Changes, Belt Length and Axle PositionHow a toothed final drive belt is sized, how far the axle moves when you change a pulley, and what to check…Updated Oct 27, 2026Harley-Davidson Softail Gear Ratios and Highway rpm (2026), Worked OutHarley-Davidson · GuidesHarley-Davidson Softail Gear Ratios and Highway rpm (2026), Worked OutOverall ratios to gearbox ratios, road speed in every gear, rpm at 60, 70 and 80 mph for each rear tyre, and…Updated Oct 27, 2026Harley-Davidson Low Rider S vs Low Rider ST (2026): What the Fairing AddsHarley-Davidson · CompareHarley-Davidson Low Rider S vs Low Rider ST (2026): What the Fairing AddsSame engine, frame and wheels. The ST adds a frame-mounted fairing, saddlebags, 42 lb and about $5,000. What that means in numbers.Updated Oct 26, 2026Harley-Davidson Street Bob vs Low Rider S (2026): Classic vs High OutputHarley-Davidson · CompareHarley-Davidson Street Bob vs Low Rider S (2026): Classic vs High OutputThe entry Softail against the performance cruiser: engine, weight, tank, geometry and highway rpm compared.Updated Oct 26, 20262026 Harley-Davidson Cruisers Compared: All Eight Softails by the NumbersHarley-Davidson · Compare2026 Harley-Davidson Cruisers Compared: All Eight Softails by the NumbersWeight, power, seat, tank, geometry, rpm at 70 mph and price for every 2026 Softail cruiser, with power-to-weight and chassis families.Updated Oct 26, 2026

Low Rider S FAQ

What is the Milwaukee-Eight 117 High Output?

The most powerful version of the 117 in the 2026 cruisers, rated at 114 hp at 5,000 rpm and 128 lb-ft at 4,000 rpm, against 98 hp and 120 lb-ft for the 117 Classic. Displacement, bore, stroke and compression ratio are the same.

What is the Low Rider S seat height?

27 in (686 mm) laden; 715 mm unladen according to one spec sheet.

How heavy is the 2026 Low Rider S?

670 lb (304 kg) in running order; 644 lb (292 kg) dry, as published.