Two different spark plugs are approved for the Rotax Max Challenge.
- GR8DI
- GR9DI
For colder and humid weather we recommend GR8DI which makes the engine run a little warmer, for normal weather 15-30 degrees GR9DI is what you should have.
Rotax
Spark Plug NGK GR8DI
7167
€21.05
In Stock
Fast shipping
Easy returns
Worldwide delivery