DuroMax XP16HPE 420cc Engine

DuroMax XP16HPE 420cc Engine Review

So, I recently got my hands on the DuroMax XP16HPE 420cc Engine, and I’ve got some thoughts to share with you. If you’re in the market for a powerful and versatile engine for your go-kart, then you’re in the right place. I’ve had the chance to put this engine through its paces, and I’m here to give you the lowdown on what you can expect from it. Stick around to find out if this engine is the right fit for your kart!

DuroMax XP16HPE 420cc Engine
  • 420cc 4 Stroke OHV Engine
  • Large 1.75 Gallon Fuel Tank
  • Runs on Standard 87 Octane Gasoline
FeatureIdeal Use Case
Target Go-Kart & DriverCasual/Recreational karts, beginners & casual drivers
StrengthsPowerful for recreational use, electric start, affordable, easy maintenance
WeaknessesNot for racing, throttle compatibility issues, air-cooled limits performance
Track SuitabilityFlat or mildly inclined tracks, more straights suitable
Best ForModerate speeds, inclines, budget-minded users
AlternativesHonda GX200 (similar power, potentially higher reliability), Briggs & Stratton Vanguard (more demanding applications)

Quick Verdict

My Score: 7.33/10

My experience with the DuroMax XP16HPE 420cc Engine has been nothing short of positive. It’s a reliable and powerful option for many uses, and the electric start feature sets it apart from the competition. If you’re looking for an engine that offers a great balance of performance, convenience, and value, then this could be the one for you.

If you want to find out how I came up with the score of 7.33/10, make sure you keep reading.

If you want to see this engine compared to others, read Best Go-Kart Engines of 2024.


  • Power Source: Gas
  • Engine Type: 4 Stroke OHV
  • Horsepower: 16 HP
  • Engine Displacement: 420cc
  • Start Type: Electric/Recoil
  • Weight: 83 Pounds
  • Dimensions: 20.47L x 18.5W x 22H inches
  • Price: $419
  • Download the Manual here.

Pros and Cons

What I Liked

  • The electric start feature is a game-changer for quick and effortless engine starts.
  • With a large 1.75-gallon fuel tank, you can keep working for longer without constant refueling.
  • The smooth and powerful performance of the 420cc engine really impressed me, providing ample power for my go-kart.
  • It’s great that this engine runs on standard 87-octane gasoline, making it convenient to fuel up.
  • The ease of installation and compatibility with various equipment made it a hassle-free upgrade for me.

What Can Be Improved

  • The engine could benefit from improved throttle cable compatibility for a more seamless user experience.
  • Customer service and response time from DuroMax could be better, especially for addressing technical queries and issues.

This engine is a great match for go-kart enthusiasts, from those building their own karts to competitive racers seeking a reliable power source. Its robust construction, coupled with user-friendly features, makes it an excellent choice for a range of go-kart applications, satisfying both performance seekers and casual riders.

Practical Applications in Go-Karting

In practical go-karting scenarios, the DuroMax XP16HPE 420cc engine proves to be a formidable choice. Its robust horsepower and smooth operation translate well on the track, offering the acceleration and power needed for competitive racing.

Its fuel efficiency and large tank capacity mean fewer pit stops for refueling, which is crucial in endurance races. The engine’s ease of installation and compatibility with various kart models make it a preferred choice for both hobbyist kart builders and professional racers.

How I Scored DuroMax XP16HPE 420cc Engine


The DuroMax XP16HPE is a 420cc 4-stroke OHV engine that delivers a maximum output of 16 horsepower at 3600 RPM. This power level makes it a robust engine suitable for various heavy-duty applications.

Horsepower Grade: 8/10

Fuel Efficiency

The engine is equipped with a large 1.75-gallon fuel tank. It has an average run time of 1/2 gallon per hour at 1/2 load, which is quite efficient for an engine of this size. The engine operates on standard 87-octane gasoline.

Fuel Efficiency Grade: 7/10


The DuroMax XP16HPE is built for durability. It features a cast iron sleeve and stainless steel ball bearings, which are known for their longevity and resistance to wear. The engine cooling is managed by a forced air system, and the oil cooling type is splash. The engine also comes with a 3-year limited factory warranty, indicating the manufacturer’s confidence in the product’s durability.

Durability Grade: 8/10

Ease of Use

The engine features both electric start and recoil start options, providing convenience and reliability in starting the engine. It also includes a key switch box for easy operation. The engine is EPA and CARB-approved, making it safe for use.

Ease of Use Grade: 8.5/10


The price of the DuroMax XP16HPE engine is competitive, considering its features and capabilities. It is listed at $419.00 on one retail website, suggesting it is widely available and priced for the consumer market.

Price Grade: 7.5/10


The weight of the DuroMax XP16HPE engine is listed as 83 lbs. This is pretty heavy for an engine of this size and power, making it a bit of a challenge in racing situations.

Weight Grade: 5/10

In conclusion, the DuroMax XP16HPE 420cc engine scores well in all the evaluated categories, making it a reliable and efficient choice for any karting enthusiast.

Best combination

To enhance the functionality and lifespan of your DuroMax engine, consider pairing it with the PGN #40 Roller Chain. This chain, built with durable carbon steel and featuring 239 links, is perfect for a variety of machinery including go-karts and mini bikes. It’s a strategic investment, ensuring your equipment runs smoothly and effectively, thereby maximizing the potential of your DuroMax engine.

PGN #40 Roller Chain PGN #40 Roller Chain No ratings yet $10.95Amazon Prime


the DuroMax XP16HPE 420cc engine stands out as a versatile powerhouse suitable for go-kart enthusiasts. Its blend of power, efficiency, and ease of operation makes it ideal for both competitive racing and leisure go-karting. Scoring 7.33/10, it demonstrates reliability and performance essential for the demands of go-kart tracks, offering great value for hobbyists and racers alike.

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