Aprilia SX 125 maintenance and service intervals
The full service schedule for the 2025 SX 125: oil change interval, valve checks, first service and realistic costs, built from its published service data and the assumptions shown further down. A compiled guide like this supplements the owner's manual; it never replaces it.
- 6,000 km
- oil service
- 12,000 km
- valve check
- 2 years
- warranty
- €1,555
- est. per 10,000 km
What is due next on yours?
Service intervals
One row per oil-service milestone. Bold rows are the bigger visits.
| Odometer | Work due |
|---|---|
| 6,000 km |
|
| 12,000 km |
|
| 18,000 km |
|
| 24,000 km |
|
| 30,000 km |
|
| 36,000 km |
|
| 42,000 km |
|
First service at 1,000 km
The first service matters more than any visit after it: it drains the oil that carried the metal particles of engine break-in. Booked at a dealer it runs about €145, and skipping or stretching it is the cheapest way to buy an expensive problem. Here is what the workshop does:
- Engine oil and filter change
- Chain tension and lubrication
- Brake, throttle and clutch operation check
- Fastener torque check and fluid levels
By calendar, not odometer
| Engine oil and filter | every 12 months if the distance interval is not reached |
|---|---|
| Brake fluid | every 2 years |
| Coolant | every 3 years |
| Fork oil | every 40,000 km |
| Battery | load test yearly; typical life 4 to 5 years |
What each service costs
Dealer estimates from the labour and parts assumptions below. DIY removes the labour line entirely.
| First service1,000 kmBreak-in oil and filter change plus the full checklist; flushes out running-in metal | ~€145 |
|---|---|
| Routine serviceevery 6,000 km or 12 monthsOil and filter, ~2 L, chain and brake checks, 1 h labour | ~€145 |
| Valve check serviceevery 12,000 kmRoutine service plus 2 h of valve work and new spark plugs | ~€360 |
What it costs per 10,000 km
| Fuel2.6 L/100 km at 1.85 EUR/L | €480 |
|---|---|
| Oil servicesevery 6,000 km, ~2 L oil plus filter and 1 h labour | €245 |
| Valve checksevery 12,000 km, ~2 h labour plus plugs | €180 |
| Chain and sprocketskit roughly every 24,000 km | €115 |
| Tyressupermoto rubber, ~6,000 km a set | €535 |
| Total, estimated | €1,555 |
Assumptions: workshop labour €95/hour, fuel 1.85 EUR/L, oil €18/L, chain kit €180 fitted, supermoto tyres €320 a set lasting about 6,000 km. Oil quantity is estimated from displacement. DIY servicing removes the labour lines entirely. Your prices will differ; the ratios mostly will not.
Oil, plugs, chain and tyres
The consumables card: what the SX 125 takes, for the parts counter or the shopping basket.
| Oil change interval | every 6,000 km or 12 months |
|---|---|
| Spark plug replacement | every 12,000 km |
| Tyre sizes | 100/80-17 front, 130/70-17 rear |
What SX 125 owners actually watch
- The 6,000 km service interval is shorter than the KTM's, but each visit is simple work on an engine every Aprilia dealer has known for years.
- Teenage commuting kills chains with neglect, not distance. A monthly clean and lube is the single cheapest habit an SX owner can build.
- Check the rear preload before carrying a pillion; the stock setting assumes one light rider, and the long-travel shock sags fast with two aboard.
Frequently asked
- When is the first service on the Aprilia SX 125?
- At 1,000 km. It is mostly an oil and filter change plus a full checklist, and it matters more than any later visit: it flushes out the metal particles from engine break-in. Expect around €145 at a dealer.
- How often does the Aprilia SX 125 need an oil change?
- Every 6,000 km or 12 months, whichever comes first. Expect roughly €155 at a dealer, or the price of oil and a filter if you do it yourself.
- What is the valve check interval on the Aprilia SX 125?
- Every 12,000 km. Budget around 2 hours of workshop labour plus spark plugs when it comes due.
- Is the Aprilia SX 125 cheap to maintain?
- It is pricier than average for its class: scheduled servicing works out near €425 per 10,000 km on our model, against a supermoto average of €310. The full cost table above shows where it goes.
- What does the Aprilia SX 125 cost to run per 10,000 km?
- Roughly €1,555 including fuel, scheduled servicing, chain and tyres, using the assumptions published on this page. Ride harder or softer and the tyre line moves first.