Ratio Rite

About Ratio Rite

If you have ever twisted the throttle on a two-stroke motorcycle, ripped through a motocross track on an ATV, or fired up a chainsaw before a long day of work, you already understand how critical the right fuel-to-oil ratio is. Too lean and you risk seizing an engine; too rich and you foul plugs and waste expensive premix oil. Ratio Rite was built to solve that problem once and for all with a single, elegantly simple tool: the original Ratio Rite measuring cup.

For decades, Ratio Rite has been a staple on the workbenches of professional mechanics, motocross racers, landscapers, and weekend riders alike. The brand's philosophy is straightforward — remove all guesswork from the fuel mixing process so riders and operators can focus on what they actually enjoy. The result is a measuring cup that has become nearly synonymous with two-stroke premix in the powersports world.

The Original Ratio Rite Measuring Cup

The core product is deceptively simple but meticulously engineered. Ratio Rite cups are molded from durable plastic that is completely safe for use with fuels and oils, and the measurement markings are raised directly into the cup rather than printed on — meaning they never fade or rub off with use. The cup is calibrated in fluid ounces, cubic centimeters (cc/ml), and pints, covering a wide range of mixing ratios from 16:1 all the way to 70:1, making it suitable for virtually any two-cycle engine on the market.

Measuring capacity reaches up to 24 oz (700 ml), which is enough to prepare premix for 1.0 to 2.5 gallons of gasoline. The dual-scale design also makes the Ratio Rite useful beyond just premix fuel — it is equally handy for measuring fork oil, shock oil, transmission fluid, and other lubricants where precision matters. Many riders keep one permanently mounted in their garage or trailer for quick, accurate service every time.

Why Riders and Mechanics Trust Ratio Rite

• Pre-calibrated ratio markings eliminate math and measurement errors on the spot
• Dual-unit scales (oz, cc, pints) cover premix fuel and all common powersports lubricants
• Durable polypropylene construction resists fuel and oil without degrading over time
• Snap-on lid option keeps contaminants out of the mix when the cup is stored or in transit
• Universal compatibility — works with any two-cycle engine, from 50cc kart motors to full-size chainsaws and dirt bikes

Who Uses Ratio Rite?

The Ratio Rite cup appeals to a broad audience. Motocross and off-road riders rely on it for consistent premix before every ride. Karting enthusiasts use it at the track to ensure the right oil-to-fuel blend for their two-stroke kart engines. Landscapers, arborists, and outdoor power equipment operators depend on it for chainsaws, trimmers, and blowers where an incorrect ratio can mean an expensive engine rebuild. Even aviation enthusiasts and marine users have found value in the cup's precise liquid measurement markings.

Whether you are a seasoned professional tuning a race machine or a first-time rider learning the basics of two-stroke maintenance, the Ratio Rite measuring cup is one of those tools that pays for itself the very first time it prevents a costly mixing mistake.