Amsoil’s Motorcycle Octane Booster

Stops Predetonation or Pre-Ignition while enhancing the overall ride

Increases octane for power and efficiency. It is designed to improve startup performance and eliminate engine pre-ignition or ping and knock for increased power at low-rpm operation. Contains detergents that help combustion chambers and fuel delivery systems maintain cleanliness for optimum performance. The side effect per our customer feedback is substantial. Please read the reviews at the bottom of this page!!!

Maximizes Power & Performance

When treated at 1.3 oz. per gallon of fuel, Motorcycle Octane Boost increases the octane of gasoline up to three numbers. Increased octane improves power and can eliminate performance-robbing and potentially damaging engine knock or ping (see below).

Motorcycle Octane BoostImproves Low-rpm Performance

Engine knock is especially noticeable in some motorcycles during idle or low-rpm operation and high-temperature driving. Most modern bikes are equipped with sophisticated knock-detection systems that can alter spark timing and the air-to-fuel mixture until pre-ignition ceases. Although these systems protect the engine from damage, they can also cause reduced horsepower and poor low-rpm operability. AMSOIL Motorcycle Octane Boost helps reduce the need for knock-detection systems to compensate, ensuring maximum low-rpm power and performance in modern bikes.

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Printable Product Data Sheet for Motorcycle Octane Boost.

Download PDFProduct Datasheet

 

Cleans Harmful Deposits

Because Motorcycle Octane Boost contains active detergents, it can help maintain efficiency. For clean up, however, AMSOIL recommends treating gasoline First with AMSOIL Quickshot, which contains a greater concentration of cleaning agents. Once the quench area has been cleaned, the octane boost will have much more of an effect.

What is engine knock and why does it matter?

The tendency of a hydrocarbon fuel, such as gasoline, to knock is measured by its octane number. Lower numbers denote a greater knock tendency; higher numbers denote greater knock control. Engine knock or predetonation is a reference to the sound made from an uncontrolled and early ignition of fuel in the combustion chamber. It causes a knocking or pinging sound, robs the engine of power and can cause catastrophic engine damage. Knock may be eliminated by increasing the fuel’s octane. Read more on engine knock in an older AMSOIL article on the subject.

What is Research Octane Number?

Research Octane Number (RON), Motor Octane Number (MON) and Anti-Knock Index (AKI) are the three most common octane ratings. AKI, the rating with which most North American motorists are familiar, is typically displayed on gas pumps as the average of the fuel’s RON and MON [(R+M)/2]. RON, however, is the most common industry rating. Therefore, AMSOIL uses the RON rating when conducting performance tests and product validation. Gasoline’s RON generally is a few numbers higher than the AKI posted on the gas pump (e.g. 87 octane fuel, or regular pump gas, has a RON of about 91-92).

When marketing their products, some additive manufacturers have adopted a points system where 10 points equals one octane number. A claim that an additive increases octane 30 points translates into an increase of three octane numbers. This approach is often used only to artificially strengthen marketing claims and is not endorsed by AMSOIL.

Treat Rate

One 4-oz. bottle of AMSOIL Motorcycle Octane Boost treats four to six gallons of gasoline.

APPLICATIONS

Motorcycle Octane Boost is primarily recommended for use in four-stroke air- or liquid-cooled motorcycles manufactured by Harley-Davidson®, Yamaha®, Honda®, Ducati®, BMW®, Triumph® and all other four-stroke motorcycles. It may be used in off-road applications, including ATVs, UTVs and snowmobiles, as an alternative to AMSOIL DOMINATOR® Octane Boost. Note: Clean spills immediately using a clean towel. If left standing, Motorcycle Octane Boost can stain painted or metal surfaces. If cleaned immediately, there is no need for concern.

HEALTH & SAFETY

This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS). USA and Canada (M)SDS are available upon request at 715-392-7101 or on the AMSOIL Website. Keep Out of Reach of Children. Don’t pollute.

For AMSOIL warranty information, visit www.amsoil.com/warranty.aspx.

Before you use the octane boost, consider cleaning up everything up which may solve your problem with Quickshot!

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Motorcycle Octane Boost Customer Reviews

Octane boost

By  JOHN,  a  Verified Buyer  from  Tweed Ontario   on  June 21, 2025
I have only used this product In my older Atv. The bike is a 2003 and was idling rough and had poor performance when cold. The 1st tank of fuel i seen an incredible improvement in the bike idling and driving . Bike doesn’t even need the choke when first starting the bike. Totally amazed!

Ping Prevention Insurance

By  BootCampBob,  a  Verified Buyer  from  Upstate New York  on  June 10, 2025
My bike requires high-octane fuel, which I can’t always find in rural areas, so I grabbed a bottle of this for those times I can’t get what the bike needs. Haven’t used it yet, but it’s good to know I have it when the only thing I can find is 87 or 89 octane. I haven’t gone wrong with any other AMSOIL product, so I’m counting on this in a pinch.

NEEDED

By  RODNEY,  a  Verified Buyer  from  Union county Illinois  on  November 14, 2024
When traveling in areas where 93 octane is not available, adding this to your tank gives you confidence and peace of mind you will get quality performance and reliability out if each tank of gas!

Highly Recommend

By  JOHN,  a  Verified Buyer  from  Arvada, CO  on  June 22, 2024
I use the octane boost in my 2019 HD Roadglide. I upgraded my motor with a stage IV kit & improves the performance exceptionally by using regularly. Also is great for road trips when you fuel multiple times, you never know the quality of premium fuel on the road. My wife has a 2019 Spyder, which we use the octane boost in too.

Great product

By  FRED,  a  Verified Buyer  from  Holyoke, CO  on  May 30, 2025
Premium fuel isn’t always available at fuel stops, knowing that adding the octane boost to a lower octane gas makes my Harley run smooth

 

Performance Plus
By  Bruce,  a  Verified Buyer  on  July 30, 2019
On several occasions I have had to refuel with lower octane gasoline and then ride through mountains. The pinging was especially bad and my bike basically lost acceleration. One of my friends suggested your octane boost. I tried and performance back where it should be if not better. I actually believe it is better. Now, I always travel with a bottle on my bike. Great product.
Works well, doesn’t harm sensors like others
By  Chris,  a  Verified Buyer  on  July 04, 2019
This octane boost is fantastic. My 2013 Road Glide Ultra runs so much smoother, quieter, and more powerfully that it seems to be an entirely different motorcycle. With 91 octane being the highest available in my area, this octane boost has proven to be a wonderful solution to the ping pang ting tang that had made my rides less enjoyable. Thanks Amsoil!