Aprilia SX

Brake fluid capacity & service interval

Aprilia SX brake fluid capacity ranges between min and max values. Service intervals include checks at 1000 km and 4000 km, and changes at 12 months or 18000 km/24 months. The data covers 4 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
SX 125 Euro 5 (2021- )
  • Use: Normal
  • Between min and max.
  • Change 18000 km/ 24 months
SX 125 Euro 4 (2017-2021)
  • Use: Normal
  • Between min and max.
  • Change 18000 km/ 24 months
SX 125 (2008-2017)
  • Use: Normal
  • Between min and max.
  • Check 4000 km
  • Change 12 months
SX 125 (2008-2017)
  • Use: Initial service
  • Between min and max.
  • Check 1000 km

Additional Notes

  • The Aprilia SX 125 hydraulic brake system does not specify a fixed fluid volume. Instead, the level is maintained between the minimum and maximum marks on the reservoir, which is the standard method for brake fluid servicing on closed hydraulic systems.
  • For the SX 125 (2008-2017) under normal use conditions, brake fluid is subject to a change interval of every 12 months, regardless of distance traveled.
  • The same 2008-2017 configuration also carries a check interval of every 4000 km under normal use, meaning the fluid level is inspected at that mileage point independently of the annual replacement schedule.
  • An initial service check interval of 1000 km applies to the SX 125 (2008-2017), reflecting the early inspection that follows break-in riding before the standard 4000 km check cycle begins.
  • The SX 125 Euro 4 (2017-2021) moves away from the time-only change interval seen in the earlier model. Under normal use, fluid replacement is due at 18000 km or 24 months, whichever comes first, combining both a distance and a time threshold.
  • The 24-month change interval on the Euro 4 and Euro 5 variants is double the 12-month interval of the 2008-2017 model, representing a notable difference in scheduled maintenance frequency between the two generations.
  • The SX 125 Euro 5 (2021- ) shares the same 18000 km or 24-month change interval as the Euro 4 variant, with the fluid level maintained between the reservoir's minimum and maximum marks under normal use conditions.

Other Systems