Hi Test Octane Booster By Maxima Racing Oil 83916 Fuel Additive 83916 Parts Unlimited
The image shows a logo for "MAXIMA Racing Oils" featuring bold, aggressive lettering with the word "MAXIMA" in black outlined text with angular, racing-inspired styling. A red oval shape appears on the left side, and "RACING OILS" is written below in smaller red text with white outlines, creating a dynamic motorsports brand identity.
Hi Test Octane Booster By Maxima Racing Oil 83916 Fuel Additive 83916 Parts Unlimited
The image shows a logo for "MAXIMA Racing Oils" featuring bold, aggressive lettering with the word "MAXIMA" in black outlined text with angular, racing-inspired styling. A red oval shape appears on the left side, and "RACING OILS" is written below in smaller red text with white outlines, creating a dynamic motorsports brand identity.
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Maxima Hi Test Octane Booster 16 oz

$9.99 USD
Normally ships in 2-3 business days

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SKU: 83916

Pickup available at Elm Rd. Warehouse

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SKU: 83916

Getting fuel and oil right is key to performance and engine life. Maxima Hi Test Octane Booster 16 oz (part number 83916) is a fuel and mixing product from Maxima Racing Oils (16 oz). Concentrated booster raises pump gas octane.

Witchdoctors carries Maxima oils, fluids and chemicals for motorcycles, ATVs, side-by-sides and more. Read the specs below, and contact our team if you have questions before you order.

Why Choose Maxima

Maxima Racing Oils has formulated oils and chemicals for motorcycles, ATVs, side-by-sides, snowmobiles and watercraft for decades, and its products are widely used in motocross and off-road racing.

Key Features

  • Concentrated booster raises pump gas octane
  • Helps eliminate pre-detonation
  • Mix with straight gas or alcohol and nitrous mixtures
  • For 2- and 4-stroke engines

Specifications

  • Brand: Maxima Racing Oils
  • Part number: 83916
  • Product type: fuel and mixing product
  • Size: 16 oz

Compatibility

Always follow your owner’s manual for the correct type, grade and capacity. If you’re not sure which product your machine needs, contact our team with your year, make and model.

Buying Guide

Use these points to choose the right product:

  • Measure accurately when mixing oil and fuel.
  • Follow your engine’s octane requirement; booster helps when pump fuel falls short.

Use Cases

  • Premix fuel prep
  • Race-day fuel

How to Use

Follow the directions on the label, work in a ventilated area and keep products away from hot surfaces.

Safety

Wear gloves and eye protection, keep products away from children and pets, and recycle used oil and fluids at an approved collection center.

Why Buy From Witchdoctors

Witchdoctors carries genuine Maxima Racing Oils products, and our team can help you choose the right oil or fluid for your machine. Most orders ship fast, and we stand behind what we sell.

Pair It With

Fuel Stabilizers & Cleaners · Maxima Oils & Aerosols

Helpful Guides From the Witchdoctors Blog

Frequently Asked Questions

Is this genuine Maxima?

Yes. Witchdoctors sells genuine Maxima Racing Oils products.

Which grade or weight do I need?

Use the grade in your owner’s manual. If you’re unsure, contact our team with your year, make and model.

How should I store it?

Keep containers sealed, upright and out of direct sun and freezing temperatures.

How do I dispose of used fluids?

Take used oil and fluids to an approved recycling center or parts store collection point.

Where to Ride

Fresh fluids, then go ride:

  • Great River Road (Minnesota and the Mississippi River): river towns and bluffs along the Mississippi
  • Going-to-the-Sun Road (Glacier National Park, Montana): a 50-mile alpine crossing of the Continental Divide

Order Today

Add Maxima Hi Test Octane Booster 16 oz (83916) to your cart and Witchdoctors will ship it fast. Questions? Contact our team.

General Safety Warning & Installation Requirements

Your safety is our top priority. Whether you are maintaining a Victory® or Indian® Motorcycle, or servicing a UTV, ATV, or Side-by-Side, proper installation is vital to the performance and safety of your vehicle.

Important:
Warning: Failure to follow manufacturer-specified installation procedures and safety requirements can result in mechanical failure, loss of vehicle control, serious injury, or death.

Important Fitment Disclosure

At Witchdoctors, we want to ensure you get back on the road or trail as quickly as possible. Correct fitment is the most critical step in purchasing parts for your Victory® or Indian® Motorcycle. Also for your Polaris®, CFMoto®, Arctic Cat®, Yamaha®, Honda®, Can-Am®, Kawasaki® UTV and ATV.

Verification Required: While we strive for 100% accuracy, vehicle manufacturers often make mid-year production changes. Always verify your specific year, make, and model before finalizing your order.
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Shipping

Qualifying Retail orders $159.99 or more will receive free ground shipping. Free Shipping Terms and conditions.

All orders over $500 will require a signature.

Please see International Shipping page for orders shipping outside the US.

See our full Shipping Policy page for further details.

Product Availability

We show real time product availability. These products normally ship the same business day but may ship from one of our warehouses across the country. If an item requires additional processing time you will be notified.

Returns

If your order arrives and it is not right, we will we'll fix it. We promise!

Doesn't fit or just not happy with it? You can return any new, unopened, unused or unaltered item within 30 days of delivery receipt of your item. We will issue a refund to your original payment method.

See our full Return Policy for all of the pertinent details.

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