Buell 1125

Coolant capacity & service interval

Buell 1125 uses coolant with a capacity of 3 liters. The service interval for coolant is 40000 km. The data covers 2 configurations.

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

TypeSpecifications
1125CR (2009-2010)
  • Use: Normal
  • Capacity 3 liter
  • Change 40000 km
1125R (2008-2010)
  • Use: Normal
  • Capacity 3 liter
  • Change 40000 km

Additional Notes

  • Both the 1125CR and 1125R share a cooling system capacity of 3 liters, which reflects a full system fill including the radiator, hoses, and engine passages rather than a partial top-off volume.
  • The Buell 1125R covers model years 2008-2010, while the 1125CR entered the lineup in 2009, giving the 1125R one additional model year of production under the same coolant specification.
  • The 40,000 km change interval listed for both variants applies under normal use conditions, meaning standard riding environments without the added thermal stress associated with severe or track use.
  • A 3-liter coolant capacity is relatively modest compared to multi-cylinder automotive systems, consistent with a twin-cylinder motorcycle engine where total fluid volume is kept low to reduce weight.
  • The identical capacity and change interval across both the 1125CR and 1125R indicates the two models share the same underlying cooling system architecture despite their differing chassis configurations.