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Maxima Hi-Test Octane Booster

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Maxima Hi-Test Octane Booster

Maxima Hi-Test is an all organic octane booster containing no lead, manganese or phosphorus. It readily mixes with all types of gasoline, alcohol and nitro mixtures. Hi-Test will suppress detonation and pre-ignition by modifying the burn rate and increasing the auto-ignition temperature of the air/fuel mixture. The use of Hi-Test in your gasoline will eliminate pinging and knocking and the potentially destructive results of them. It will allow for higher compression ratios and therefore more horsepower. 

Recommended mix ratio of 1oz to 1 gallon of gasoline.


  • 1 oz. per gallon raises octane level up approximately 4 points
  • Can be use in 2-stroke and 4-stroke engines
  • Will not effect plastic gas tanks
  • Stops knocks and pings
  • Increases horsepower
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Maxima Hi-Test Octane Booster 5 5 2 2
Well, what can i say... I put this in my tank not expecting much, it was recommended when i bought the bike and ive been putting it off, finally picked this stuff up and wow, i could feel the difference right from first gear, it didnt struggle as much and it pulled me longer and harder then before. Absolutely pick this up, you will not regret it, i used this in my 1985 Kawasaki Gpz 750. May 15, 2015
Good stuff! Engine really sounds and feels solid with this stuff in the tank. August 5, 2014
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Maxima Hi-Test Octane Booster
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RevZilla Store asked: Why did you choose this?
Micah D: It works! Make my bike more responsive and runs way smoother. Mar 27, 2014
Product Style RevZilla Item # Manufacturer Product # Availability
16 OZ 166914 83916 In Stock: Ships within 24 hours