Oil and filter change
≈ 8,000 km or 1 year
JASO MA or MA2 approved four-stroke motorcycle oil (JASO MB on scooters): an “energy conserving” car oil makes the wet clutch slip. Change it more often in city use or on track.
Source [1]Sportster S · 2021–…
Harley-Davidson Sportster S 1252 · 122 hp (2021 to date)
The Harley-Davidson Sportster S 1252 uses the Harley Revolution Max 1250 petrol engine with 122 hp.
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Technical specifications
- Fuel
- Petrol
- Power
- 122 PS / 90 kW
- Displacement
- 1 252 cm³
- Cylinders
- 2
- Engine code
- Harley Revolution Max 1250
- Period covered
- 2021–…
- Documented market
- Europe
Transmission
- Manual · 6 speeds
Figures apply to the cited configuration and market; equipment and transmissions may vary by production date.
Specification source : [1] AutoKarnet
This version
122 hp (90 kW), belt final drive, 6-speed manual. Built from 2021 to date.
AutoKarnet advice
In the range
It is the only petrol version of this generation. The Harley Revolution Max 1250 engine is also fitted to: Harley-Davidson Pan America 1250 (Pan America 1250).
AutoKarnet advice
Body style and inspection points
On a motorcycle, tyres, final drive and brakes matter as much as the oil change. Check the tyre manufacturing date, steering-head play and fork-tube seals; an oil film on a tube means a fork seal needs replacing. A notched steering bearing can be felt when braking at low speed.
AutoKarnet advice
Maintenance and records
≈: estimated reference — the vehicle’s service indicator prevails.
Brake fluid
Every 2 years
Replace the fluid in both circuits (and the hydraulic clutch if fitted), whatever the mileage; dark fluid has absorbed moisture.
Source [1]Fork oil
≈ 30,000 km
Fork oil change and seal check; an oil film on the tubes means a seal needs replacing before it contaminates the brake caliper.
Source [1]Final drive belt
≈ 16,000 km
Check the tension, cuts and teeth at each service; a trapped stone can cut it. No lubrication: the belt is cleaned with water.
Source [1]Spark plugs
Every 48,000 km
Replace the full set; worn plugs raise consumption and cause misfires.
Source [1]Air filter
Every 16,000 km
Replace more often in dusty conditions.
Source [1]Coolant
Every 3 years
Replace the coolant and check the hoses and radiator; check the level cold between services.
Source [1]Questions about this version (3)
Which engine is in the Harley-Davidson Sportster S 1252?
The Harley Revolution Max 1250 petrol engine (1 252 cc), 122 hp (90 kW).
AutoKarnet advice
Which oil for the Harley-Davidson Sportster S 1252?
A JASO MA2 10W-40 four-stroke motorcycle oil suited to the Harley Revolution Max 1250 engine.
AutoKarnet advice
How do I check this page matches my car?
This page covers Harley-Davidson Sportster S 1252 122 hp, cruiser, from 2021, with 122 hp (90 kW), Harley Revolution Max 1250, 1 252 cm³, 6-speed manual, from 2021. Compare these details with the registration document and gearbox identification. The designation Harley Revolution Max 1250 may cover several revisions: a VIN is still needed to confirm part numbers.
AutoKarnet advice
Documentary sources
- [1] Rédaction AutoKarnet
AutoKarnet · FR · Europe · Synthèse éditoriale AutoKarnet · Accessed 09/10/2026