KTM ATV

Coolant capacity & service interval

KTM ATV coolant capacity is 1,5 liters. Service intervals are 1 race, 70 to 100 liters of consumed fuel, or 10 to 15 hours. The data covers 6 configurations.

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

TypeSpecifications
505 SX ATV (2012-2013)
  • Use: Normal
  • Capacity 1,5 liter
  • Check 1 race/ 70 liter consumed fuel/ 10 hours
525 XC ATV (2012-2013)
  • Use: Normal
  • Capacity 1,5 liter
  • Check 1 race/ 100 liter consumed fuel/ 15 hours
505 XC ATV (2010-2010)
  • Use: Normal
  • Capacity 1,5 liter (Including compensating tank)
505 SX ATV (2009-2011)
  • Use: Normal
  • Capacity 1,5 liter (Including compensating tank)
450 XC ATV (2007-2009)
  • Use: Normal
  • Capacity 1,5 liter (Including compensating tank)
525 XC ATV (2007-2011)
  • Use: Normal
  • Capacity 1,5 liter (Including compensating tank)

Additional Notes

  • Across all six configurations of the KTM ATV lineup covered here, the cooling system capacity is uniform at 1.5 liters. This figure includes the compensating tank, meaning the measurement reflects the total volume of the entire cooling circuit rather than the radiator alone.
  • The compensating tank, also called an overflow or expansion reservoir, holds coolant displaced by thermal expansion. Its inclusion in the 1.5-liter figure means a service fill to that volume accounts for the full system, not just the radiator core.
  • The 450 XC ATV (2007-2009) and the 505 XC ATV (2010) share the same 1.5-liter total capacity with no interval specification attached, indicating the capacity figure is the primary service reference for those configurations.
  • The 505 SX ATV spans two distinct specification periods. The 2009-2011 version carries only the 1.5-liter capacity note, while the 2012-2013 version adds a defined service interval alongside the same capacity value.
  • For the 505 SX ATV (2012-2013), the coolant check interval is expressed in three parallel terms: once per race, per 70 liters of consumed fuel, or per 10 operating hours. These are alternative ways of measuring the same interval threshold, allowing the appropriate trigger to be applied based on how usage is tracked.
  • The 525 XC ATV similarly splits across two specification periods. The 2007-2011 version lists only the 1.5-liter capacity with the compensating tank note, while the 2012-2013 version introduces a structured check interval.
  • The 525 XC ATV (2012-2013) carries a longer interval than the 505 SX ATV (2012-2013) under the same multi-term format: once per race, per 100 liters of consumed fuel, or per 15 operating hours. The fuel-volume and hour thresholds are both higher, reflecting a difference between the two engine configurations in their later model years.
  • Fuel consumption as an interval metric ties coolant checks to engine workload rather than calendar time or odometer distance, which is a common approach in racing and off-road applications where operating conditions vary widely between sessions.

Other Systems