VP’s best fuel yet for 4-stroke applications that can tolerate lower octane values, makes more power for powersport applications than any fuel on the market. Dyno tests proved up to 5% more power than VP’s MR9 and up to 6% more power than VP’s MRX01! Although currently not legal in AMA Pro Racing, MR12 passes fuel rules for AMA Pro/Am, CCS, WERA, AFM, NMA, WORCS, SCORE and Best in the Desert as well as club level racing and more.
When using MR12, to keep your fuel cool and prevent vapor lock on hot days, e.g. 90 ° or higher, we recommend: