The engine is often considered the heart of a go-kart. It’s arguably the most essential component of any go-kart and without it you won’t be able to drive. If you are planning on replacing your existing go-kart engine with an upgraded engine or if you are looking to build your own go-kart and are deciding to install a new engine, you’ve come to the right place!

Keep in mind that there is a wide variety of engines that can be used for go-karting and in this review list we’ll be comparing the best petrol engines for go-karts. You’ll typically see four-stroke or two-stroke engines that have an output of around 3.5 to 20 hp, depending on the type of go-kart it’s meant for. These engines will have an air cooling system, overhead valve, vertical shaft, and various other features.

1. Tillotson 212cc Engine

The Tillotson 212cc is the best go-kart racing engine on the market, as it features the greatest cost-to-performance ratio and is equipped with a lot of high-quality features. It’s a 4-stroke overhead valve engine that has a maximum output of more than 9+ hp at 3,600 rpm. This Tillotson engine also features an electric start, which makes it ideal for go-kart racing!

It’s also very fuel efficient. Combined with a large fuel tank and a consumption rate of about a quarter gallons of fuel per our (at half load), it can run for about many hours before it requires any refuelling.

The engine runs on 87 octane rated fuel (or better) and features a max torque of 9.5 – 10.5 ft-lb (@ 2,500 rpm). A special feature of this engine is that has hemispherical combustion chamber design, which means that the piston head is angled, instead of flat. Overall, the Tillotson 212cc is extremely high in quality with exceptional performance. In essence, it’s the perfect engine for go-karts!

Tillotson 212cc Specifications:

• Max Output: 9+ hp
• Displacement: 212 cc
• Type: 4-Stroke OHV
• Dimensions: 17″ x 12.75″ x 14.5″
• Weight: 38 lbs

2. Predator 6.5 HP

The Predator 6.5 HP is another great engine that is ideal for go-karts. Like most engines on this list, the Predator engine features an overhead valve system that is designed to be fuel-efficient. It’s also known to have a high degree of durability, smooth performance, and a good tolerance for extreme conditions.

The engine is designed with a horizontal shaft that has been mounted on a ball bearing. It’s build quality is also decent, as it’s manufactured with durable and long-lasting cast iron cylinder that protects it from wear and tear. This makes it ideal for all types of weather conditions.

Additionally, it has an auto-shutdown sensor for low oil situations. This prevents the engine from operating when it’s low on oil, which otherwise can damage the engine’s working efficiency. The starting and operation controls of the engine have been designed to be very user-friendly making it suitable for use for beginner and intermediate go-karts.

Predator 6.5 HP Specifications:

• Max Output: 6.5 hp
• Displacement: 212 cc
• Type: 4-Stroke OHV
• Fuel Capacity: 0.9 gallons
• Dimensions: 15.4″ x 12.6″ x 13.6″
• Weight: 37.5 lbs

3. Lifan LF 168F-2BDQ

The Lifan LF 168F-2BDQ takes the third spot in our list of best engines for go-kart racing. The industrial-grade OHV 4-stroke gasoline engine with .75″ keyway shaft is rated with high-efficiency, great power and impressive durability. Lifan markets the LF168 variants as true 1600 hour engines. It also features a compression release for E-Z starting and has the ability to automatically shut down in case of low il to protect the engine’s working efficiency.

Moreover, this go-karting engine has an electric start ignition that allows for easy starting of the engine without the need of a pull cord. The cast-iron cylinder sleeve and automotive-grade parts make this engine not only very durable and also long-lasting. it’s very efficient as compared to other engines of its kind.

The fuel tank capacity of 0.95 gallons allows you to run your kart for longer periods without the need of frequent refueling. In short, if you are a go-kart racer in need of a high-quality racing engine you should definitely consider this 196 cc marvel.

Lifan LF 168F-2BDQ Specifications:

• Max Output: 6.5 hp
• Displacement: 196 cc
• Type: 4-Stroke OHV
• Fuel Capacity: 0.95 gallons
• Dimensions: 17″ x 16″ x 17″
• Weight: 43 lbs

4. BILT HARD 301cc

The BILT HARD 301cc has a whopping 10 hp and is a beast of a go-kart racing engine. This is due to the high-performance nature and features that this engine has to offer. It also runs very efficiently and is made of high-quality parts, as it is an EPA certified engine. This high-performance motor has a 4-stroke OHV system that outputs a maximum of 10-horsepower at 3,600 rpm, making it a very powerful go-karting engine that is capable of high-speed racing conditions.

Moreover, it’s equipped with a reliable air cleaning system that prevents dirt, dust and other foreign elements from hindering its smooth running. It’s also equipped with a built-in forced air-cooling and splash lubrication system, ensuring that the engine runs at optimal temperatures.

To conclude, the BILT HARD 301ccc is a high-performance go-kart racing engine that is, durable and efficient for all types of races, particularly for races. This engine may not be suitable for your if you’re looking to build an entry-level go-kart or are replacing your existing engine with a small or mid-range kart engine.

BILT HARD 301cc Specifications:

• Max Output: 10 hp
• Displacement: 301 cc
• Type: 4-Stroke OHV
• Fuel Capacity: 1.2 gallons
• Dimensions: 20.87″ x 20.67″ x 18.5″
• Weight: 57 lbs

5. Briggs and Stratton 550 Series

The Briggs and Stratton 550 Series is another great go-kart racing engine, due to its high-efficiency and excellent build quality. This engine features overhead valve technology, which allows for a more compact design and greater fuel efficiency. This technology enables the engine the quality of running efficiently without heating up too much.

The single-cylinder 4-stroke engine meets the compliance requirements to operate in all 50 states.  It has a DuraLube™ Splash Lubrication System which keeps the 550 Series running smoothly. The Dura-Bore™ cast iron cylinder sleeve keeps the engine well protected and safe from wear and tear, thus rendering it a longer life.

One very important feature that makes this engine great for go-kart racing is it has a great size-to-performance ratio. Due to its compact size, it fits on nearly all types of go-karts. Additionally, the Magnetron electronic ignition system allows you to start the engine with a simple push of a button.

Briggs and Stratton 550 Series Specifications:

• Max Output: 3.5 hp
• Displacement: 127 cc
• Type: 4-Stroke OHV
• Fuel Capacity: 0.42 gallons
• Dimensions: 10.3″ x 13.7″ x 12.9″
• Weight: 28.7 lbs

6. AlphaWorks 7 HP

The AlphaWorks 7 HP has a displacement of 209 cc and a maximum output of 7 hp, as its name suggests. The engine is manufactured to OSHA/ISO regulation and is also CARB and EPA certified.

It’s equipped with a Transistorized Magneto Ignition (TCI) system and the forced air-cooled system ensures that the engine is kept at optimal running temperature for go-kart racing. It’s also recommended to let the engine run on 87+ unleaded fuel with a higher than 10% amount of ethanol for optimal performance.

This engine is optimal for go-kart racing, as it has a horizontal cylinder configuration with a 4-stroke OHV. At 2,500 rpm it has a torque rating of 8.85 ft/lb or 12.4 Nm, which is good. Additionally, it’s equipped with an automated engine shut-off sensor to prevent engine damage in case of low oil levels. The AlphaWorks 7 hp is a great mid-range engine for your go-kart and has respectable technical specifications for off-road or racing go-karts.

Alphaworks 7 HP Specifications:

• Max Output: 7 hp
• Displacement: 209 cc
• Type: 4-Stroke OHV
• Fuel Capacity: 0.7 gallons
• Dimensions: 16.6″ x 15.8″ x 14.5″
• Weight: 32.6 lbs

7. BILT HARD 212cc

The BILT HARD 212cc is a 4-stroke gas engine, which provides great performance with relatively good durability and reliability. Even though it has an average-sized fuel tank, it consumes minimal fuel per hour running at 3,600 rpm. It’s therefore quite a fuel efficient engine, with an output of 7 hp and has a maximum torque 8.1 ft-lbs @ 2500 RPM.

This engine has been built with very lightweight materials and highly lubricated parts, allowing it to function quietly. Moreover, it features cast-iron sleeves, a fuel shut off system, automotive grade rods, among various other features.

It also features a very ergonomic and heavy-duty recoil starting system. While it’s user-friendly, it still requires you to pull the cord, in order to turn start the engine. Unfortunately, it doesn’t have an electric starter for added convenience.

On a positive note this engine is EPA certified, which shows that it meets the emission requirements and is therefore eco-friendly and less polluting. Even though it may not have the latest features, it’s still a great and robust engine for go-karts.

BILT HARD 212cc Specifications:

• Max Output: 9 hp
• Displacement: 212 cc
• Type: 4-Stroke OHV
• Fuel Capacity: 1.5 gallons
• Dimensions: 15″ x 13″ x 13.4″
• Weight: 34 lbs

8. XtremepowerUS 7HP

The XtremepowerUS 7HP gas engine features a horizontal keyway shaft and tapered output shaft that gives the engine a smooth running environment and enables it to perform in all types of weather conditions.

The engine has been built with industrial-grade materials, which lets it run efficiently for longer durations of time. The cast-iron cylinder frame gives the entire engine increased durability. It features a low-oil shutdown functionality that automatically turns off the engine, in order to prevent structural damage to the engine. This comes in handy if you don’t have an oil level gauge installed on your go-kart.

It’s designed to be low-maintenance with great fuel efficiency. The recommended operating fuel used for this go-kart engine is a standard 87 octane or higher quality gasoline. It’s clear that the XtremepowerUS 7HP engine is marketed more as an affordable entry-level engine but make no mistake,  it definitely does pack a punch!

XtremepowerUS 7HP Specifications:

• Max Output: 7 hp
• Displacement: 212 cc
• Type: 4-Stroke OHV
• Fuel Capacity: 1 gallon
• Dimensions: 12.5″ x 15″ x 14.25″
• Weight: 38 lbs

9. Briggs and Stratton CR950

The Briggs and Stratton CR950 is another Briggs and Stratton engine that made it into the list of best go-kart engines. Similar to the 550 Series, this engine comes with a cast-iron cylinder sleeve, which is ideal for go-kart racing as it protects the engine from wear, tear and abrasions due to friction and therefore extends the engine’s life.

In addition to that, this engine has a Magnetron electronic ignition that allows easy starting and operation. It’s also designed to be as maintenance-free as possible, thus relieving you from the hassle of frequent maintenance issues. It also features an overhead valve technology that allows cooler working and increases the durability of the valves.

The CR 950 comes with a dual-element cartridge that filters the air. The foam pre-cleaner prevents dust, dirt and foreign particles from trapping into the engine. It also features the Dura-Lube Splash Lubrication system that Briggs and Stratton are famous for. Under the bottom line, this engine a more powerful variant of the 550 Series for go-karts.

Briggs and Stratton CR950 Specifications:

• Max Output: 9.5 hp
• Displacement: 208  cc
• Type: 4-Stroke OHV
• Fuel Capacity: 0.8 gallon
• Dimensions: 11.4″ x 13.2″ x 14.6″
• Weight: 33 lbs

10. Titan TX200

The Titan TX200 is also an excellent go-kart engine, regardless if you are replacing an existing motor or building your own go-kart. The reason this engine if great is because it’s equipped with a recoil start and is throttle cable ready. This means that hooking up throttle cables for your go kart is a breeze with this engine.

At 6.5 hp, the Titan TX200 gives your kart great performance for a mid-range engine. Additional features include a splash lubrication system, a dual element air cleaner and a Transistorized Magneto Ignition (TCI) system. It also features a carburetor with a butterfly valve, that allows the reduction of air intake in, order to allow more fuel to enter the 4-stroke single cylinder that helps with cold engine starts.

The engine is extremely well-built and designed for motorsport vehicles such as go-karts. For a 6.5 hp engine and with at 2,500 rpm it has a torque rating of 9.1 ft/lb or 12.4 Nm, which is impressive. This justifies the TX200’s high cost-to-performance rating and it’s one of the top contenders for best go-kart engines.

Titan TX200 Specifications:

• Max Output: 6.5 hp
• Displacement: 196 cc
• Type: 4-Stroke OHV
• Fuel Capacity: 0.82 gallons
• Dimensions: 12.6″ x 14.8″ x 13.6″
• Weight: 35 lbs