Gas Gas Contact

Manual transmission fluid capacity & service interval

Gas Gas Contact manual transmission fluid capacity ranges from 0,37 to 0,4 liters. Service intervals include checking at 30 hours and changing at 60 hours. The data covers 4 configurations.

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

TypeSpecifications
Contact 250 ES (2017-2021)
  • Use: Normal
  • Capacity 0,37 liter
  • Check 30 hours
  • Change 60 hours
  • Code: 6
Contact 280 ES (2017-2021)
  • Use: Normal
  • Capacity 0,37 liter
  • Check 30 hours
  • Change 60 hours
  • Code: 6
Contact 250 (2015-2017)
  • Use: Normal
  • Capacity 0,4 liter
  • Check 30 hours
  • Change 60 hours
  • Code: 6
Contact 280 (2015-2017)
  • Use: Normal
  • Capacity 0,4 liter
  • Check 30 hours
  • Change 60 hours
  • Code: 6

Additional Notes

  • Service intervals for the Gas Gas Contact manual transmission are measured in engine hours rather than distance or calendar time, which is standard practice for off-road competition and trials motorcycles that accumulate heavy use in short mileage spans.
  • The Contact 250 (2015-2017) and Contact 280 (2015-2017) share an identical manual transmission fluid capacity of 0.4 liter, indicating a common gearbox architecture across both displacement variants in that generation.
  • The ES variants of the Contact 250 and Contact 280, covering 2017-2021, carry a slightly reduced transmission fluid capacity of 0.37 liter compared to the 0.4 liter specified for the 2015-2017 non-ES models, reflecting a difference in the internal volume of the gearbox used in the electric-start configuration.
  • A 0.37 to 0.4 liter transmission fill is characteristic of compact, single-cylinder trials bike gearboxes, where the primary and gearbox share a common oil bath in a relatively small crankcase assembly.
  • The check interval of 30 hours across all four configurations represents a mid-cycle inspection point, falling exactly halfway between drain intervals, allowing for fluid condition and level assessment without a full fluid replacement.
  • The 60-hour change interval applies uniformly under normal use conditions across all listed Contact variants, meaning the same drain schedule governs both the 250 and 280 displacement models regardless of generation.

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