KTM 640 LC4

Coolant capacity & service interval

The KTM 640 LC4 uses coolant with a capacity of 1 liter. Six configurations of this model are covered in the data.

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

TypeSpecifications
640 LC4 Adventure (2005-2008)
  • Use: Normal
  • Capacity 1 liter
640 LC4 Enduro (2005-2008)
  • Use: Normal
  • Capacity 1 liter
640 LC4 Supermoto (2005-2008)
  • Use: Normal
  • Capacity 1 liter
640 LC4 Enduro (2002-2005)
  • Use: Normal
  • Capacity 1 liter
640 LC4 Adventure (1999-2005)
  • Use: Normal
  • Capacity 1 liter
640 LC4 Supermoto (1999-2005)
  • Use: Normal
  • Capacity 1 liter

Additional Notes

  • The KTM 640 LC4 cooling system capacity is 1 liter across all listed variants and model years, spanning the Adventure, Enduro, and Supermoto configurations from 1999-2008.
  • A 1-liter cooling system is relatively small, consistent with a single-cylinder liquid-cooled engine architecture. The LC4 designation refers to KTM's single-cylinder four-stroke engine family, where the compact coolant volume reflects the limited surface area of one cylinder compared to multi-cylinder designs.
  • The Adventure, Enduro, and Supermoto variants all share the identical 1-liter coolant capacity, indicating a common engine and cooling system architecture across the three body configurations built around the 640 LC4 platform.
  • The Adventure variant spans two overlapping specification entries covering 1999-2005 and 2005-2008, both listing the same 1-liter capacity, which reflects a consistent cooling system design across the full production run of that variant.
  • The Enduro variant entries begin in 2002, with coverage running through 2005-2008, while the Adventure and Supermoto variants both have entries starting from 1999, placing the Enduro as a later addition to the 640 LC4 lineup within the same shared cooling specification.
  • All six specification rows carry a normal use condition, meaning the 1-liter capacity figure applies to standard operating conditions rather than a severe-use or first-fill scenario.