Honda ATC 70 Specs and Review 2022

Honda ATC 70: Watching a Honda ATC 70 race across dirt roads brings back the excitement of the past. The past was when children did not require fancy equipment to go out in the wild. 

A sturdy and flotation tire and a powerful engine could increase the confidence of riders when climbing over rocks or traversing lightly snow. 

Honda ATC 70

Changes in the terrain? All it took was paddle tires that had chevron-type clamps and the car was ready to go through the sand and mud.

It was the Honda ATC 70 was the first vehicle designed for children that carried the All-Terrain Cycle (ATC) trademark. With a four-speed transmission, semi-automatic clutch flotation tires, foot protectors, and brakes that are easy to operate The Little Red was the perfect trike for adults and kids.

The process of spawning the production of young three-wheelers isn’t the sole reason which makes this Honda ACT 70 a standout. The updated design of its body and impressive power-to-weight ratio makes it a great pit bike for families and families compact but strong enough for children and children at heart. 

Keep reading and let this manual lead you through the specs, improvements, and the story of this beloved trike in red.

Honda ATC 70

History of the Little Red

The successor to the groundbreaking US90 The Honda ATC 70 was produced between 1972 and 1984, for the models ’73-’85. 

While technically it was the second all-terrain vehicle produced by Honda, however, it was one of the very first vehicles off-road that was to have the ATC trademark that was acquired by the company just prior to it being launched. 

The small trike was designed with the Honda engineering team for children and was first launched as a trike with a capacity of 72 ccs. Over the next few years, the three-wheelers were able to incorporate engines ranging between 70 and 200-cc.

In the course of its 12-year production it was temporarily put off the market, and during this, the Honda further refined the styling of the ATC 70’s body as well as its engine and drivetrain. These improvements were introduced in two parts – first in 1978, and the second in 1982. 

Honda ATC

But these improvements did not suffice to stop the dangers of riding ATCs that by the time they were introduced had earned them the notorious name “Three Wheels of Death.” The ATC70 just like every trike was prone to accidents and was not suitable for use on rough terrain. 

In addition, the lack of a suspension that was mechanical just made the situation worse for the car. With this in mind, the ban on the three-wheelers was inevitable.

Improvements Post 1978

Many are unaware that The Honda ATC 70 had a three-year absence from 1975 between 1975 and 1977. 

While many are able to think of the cause for the trike’s absence out of its Honda line-up, the gap allowed Honda the chance to improve the design and certain components that comprised the car. 

Two additional modifications were made just after the ATV’s youth return in 1978. Here is a brief listing of the improvements made on ATC 70. ATC 70:

  • The 1978 models were available models in Scarlet Red versus the 1973 model that was offered with Daytona Orange with a flame decal on the tank.
  • Modifications were made to the way the carburetor idle as well as the mixture of air and fuel as well as the brake was adjusted.
  • The tension of the drive chain specifications, torque specifications, and cleaning methods was also changed.
  • Models from 1980 had white number plates (VIN TB03-2000001 or higher).).
  • Overall dimensions are slightly larger with the caster angle decreased to 20 degrees.
  • 1981 ATC 70s had a fuel tank decal change. They were available in the New Passion Red color.
  • The transmission was upgraded from a three-speed to a constant mesh of 4 speeds in 1982.
  • In turn, the linkage between gears as well as the oil pump and transmission assemblies were also altered.
  • A 3-Kg increase in curb weight in the 1982 model can be attributed to the transmission change.
  • Reserve and fuel tank capacities increase to 0.66 US gallons/2.5 liters with a reserve of 0.13-US gallon reserve, to 1.1 US gallons/4.3 liters with a reserve of 0.2-US gallon/0.8-liter reserve.
  • Changes to technical features and maintenance procedures such as cables and routing and locking the rear brake lever mechanism along with wiring and routing diagrams were made on 1984 and 1983 models (VIN JH3TB030*DC800006 and higher).
  • There were cosmetic changes as well on the ’83-’84 versions. The 1984 model was the only one to receive an unpleated Honda ATC 70 seat cover.
  • It was the 1985 ATC70 (VIN JH3TB030*FK000001 or higher) is the sole one that was available in white with blue seat covers as well as the “70” logo and an automatic tensioner for cam chains.
  • Honda Updated and required special tools to service maintenance and servicing ATC 70. ATC 70 in its last three years of production.

The distinct characteristics of the first and second generations of ATC 70s distinguish them from other models. The first generation models were based on earlier Honda motorcycle models that had large shell-like frames made of stamped steel. 

The bearing assembly and exhaust system were contained within the chassis. In addition, flare-like rear fenders were attached to the side of the chassis.

Honda ATC70 Specs and Features

Honda ATC70 Specs and Features

  • Engine The HTML0 engine is powered with a four-stroke air-cooled single-cylinder OHC engine with an 80deg in the vertical direction. It has a bore-stroke ratio of 41.4 x 41.4 millimeters (1.85 1 1.63 inches). 
  • The engine’s displacement is 72 cubic centimeters (4.4 in3) produced by a 17-mm PZ17 Keihin carburetor. The compression ratio stands at 7.5:1. It comes with a forced-pressure and wet sump lubrication system. The weight of the engine as a stand-alone unit can be measured at 41.8 lbs/18.95 kg. 
  • The fuel tank capacities are 0.66 US gallons/2.5 liters with an 0.13-US gallon reserve. The maximum horsepower can be found at 3.6 BHP at 6500 RPM (SAE) and was slightly decreased to 3.4 BHP at 9,900 RPM (SAE 245) for the 1982 and later versions. The maximum power is 3.04 pounds (0.42 kg-m) at 5000 RPM. If you’d like to add more power, you can opt for a big-bore carb rebuild kit 88-cc or transform your ATC 70’s power mill to a Piranha 140-cc unit with 22, mm Mikuni carb and electronic (view at Amazon).
  • drivetrain The three-speed mesh gearbox, as well as overhead camshaft, is driven by chain, giving energy to wheels. Additionally, it comes with an automatic centrifugal, semi-automatic, and multi-plate wet clutch. 
  • The main reduction is 4.058 which is the maximum, and the last number is 2.500 (35/14) It was changed to 36/12 after the transmission was changed to a 4-speed transmission in 1982. The gearshift is operated by the left foot.
  • Instability: It has a flywheel magneto ignition system and a pull-cord and recoil starter system. 
  • The charging system includes an AC generator. The device needs some NGKC7HS or NDU22FS spark plug, as well as a 12-volt battery (view at Amazon) with measurements that are 5.31 and 3.54 and 6.57 inches (L x W x H). The recommended spark plug is likely to be different for cold climates and extended high-speed rides NDU20FS or NGKC6HS, and NGKC8HS or NDU24FS in turn.
  • The lubrication Capacity of the oil to drain can be 0.8 US quarts/0.8 liters. Make use of Honda GN4 4-stroke motor oil or a similar one with the viscosity of SAE10W-30 or 10W-40, and the API classification for service of at most SJ (manufacturer recommends SE is no longer in use) for the highest performance. Based on the temperature of the ambient the SAE 5Wor 20W-40 or 20W-50 motor oils.
  • The tires are: The front and rear wheels are fitted with AT16 8-7 Honda ATC 70 tires – both of which have a prescribed tire pressure of 2.8 psi/19.3 kg (0.197 kg/cm2). The wheelbase of the vehicle measures 35.2 inches (895 millimeters). The Carlisle Knobby ATV tire (view the full listing on Amazon) can be a great alternative in the event of tire wear.
  • Brakes Front brakes are not present, however, rear brakes are equipped with brake shoes that expand inside and a drum that is operated by cable. 
  • If you’re looking to replace front brakes, make sure you check for the complete front brake rebuild kit (view the item on Amazon) which comes with springs with grooves for brakes, grooved brake shoe wheel cylinders, and hardware.
  • Dimensions Overall, the dimensions of this trike is 51.1 x 31.5 3.15 x 30.9 inches (1,300 800 x 785 mm L x W x). Its seat is 22.4 inches, and its wheelbase measures 35.2 inches. Dry weights are 163.1 pounds/74 kg, while curb weights are 170 lbs/77 kg (changed to 176.4 pounds/80 kg at the time of 1982).
  •  GVWR can reach 220 lbs. This is the result of a mixture of cargo weight, curb weight, and accessories, as well as the weight of the rider. The minimum radius for turning of 4.66 feet (55.9 inches) and allowing perfect cornering.
  • Exterior This Honda model features a backbone-like frame with a plastic body with the signature red color of the company with the white seat cover. It is equipped with foot guards as well as brakes that are easy to operate, and a spark arrester that is USDA-approved. 
  • The speed limiter screw is located on the right-hand bar. The Trail Tech 752-115 Black Vapor Digital Speedometer and Tachometer gauge kit (view the item on Amazon) is a great accessory for your bike as it doesn’t have an instrument cluster. 
  • Other essential Honda ATC 70 parts include the Maier rear Fender red (view at Amazon) for replacing worn-out plastics, as well as a complete suspension kit.

ATC 70 Troubleshooting

ATC 70 Troubleshooting


The solution is to adjust the timing of the ignition and valve timing or the gap between spark plugs, in the event that it is found to be inadequate or defective.

 Verify that the gap between the spark plugs is within the interval of 0.6 to 0.7 mm/0.024 or 0.028 inches. In addition, the inlet valve’s seating must also meet the specs. 

Incorrect or poor-quality fuel may also trigger this issue so be sure to adhere to the manufacturer’s recommendations.

No-Start Issue

The most likely causes of the problem include:

  • A piston ring that is worn out to the max.
  • Cylinder
  • Head gasket
  • A valve or piston that has been seized
  • A gasket surface that is warped the cylinder as well as the head of the cylinder.
  • Valve timing is not working correctly.
  • Inadequate compression pressure

Parts that are damaged or stuck are the most straightforward to repair because they just require replacement. 

The timing of the valve is not correct and must be adjusted, and damaged gaskets surfaces must be fixed.

Poor Idling

Some of the main reasons for inefficient engine idling include incorrect tappet clearance, inadequate (or insufficient or) compression pressure, or excessive clearance of the valve stem. Clearance-related problems require the adjustment of the component to meet specifications and compression-related ones require repair. 

Note down the year of manufacture of your trike whenever one such thing happens, as it may affect specifications. Be careful with models made in 1978 or later.

Power Loss

This particular issue shares the majority of the possible reasons with the underlying issue and this is the reason for the confusion in trying to determine the causes based on symptoms. 

The only difference is that you’d have to consider the possibility of damage or obstruction in the valve mechanism prior to taking a different path. The state that the plug is in will indicate a potential electrical issue.

Smoking Exhaust

It’s a bit simpler to determine the root of this problem than other Honda ATC 70 problems. Smoke from white indicates a problem with one of the factors of the following issue: pressure and level of oil the quality of the engine oil, or the condition of the cylinder or piston. 

The black smoke indicates an overly rich fuel mixture that would need to be adjusted in the carburetor. Your owner’s guide will help when you encounter these kinds of situations. While you’re at it be sure to wash your carburetor completely. 

A sonic cleaner or hot-water carb soak will greatly assist in removing any buildup and clearing any obstructions within the path from the pilot jet to the pilot screw.

Other problems that can be found in the three-wheeler include gear shifting issues, excessive engine noise as well as heavy steering, and broken brakes. This set requires repairs or replacements for damaged or worn-out parts.

About Honda

Honda Motor Company Ltd. established the sport ATV industry and is the manufacturer of Honda ATC 70. Since its inception at the time of 1946 in 1946, the Japanese company has made quite away in the field of automotive. 

Honda is an internationally renowned maker of top-of-the-line vehicles as well as power equipment and commuter motorcycles. It is well-known for its work in robots, AI in energy, mobility, and transportation. 

Despite its huge success riders and its large following continue to anticipate Honda returning with an innovative and class-leading sports car.

Conclusion – Honda ATC 70

The days of three-wheelers dominating the ATV landscape might be gone. However, it is still an enjoyable experience to ride a vintage, powered trike driven by a knowledgeable driver who isn’t prone to flipping the trike on its side. 

Watching this iconic machine in action will always serve as a reminder of the early days of off-roading, and how larger the market for ATVs will continue to grow. With the help of pioneers such as ATC 70, the Honda ATC70 ATC 70, 4x4s have advanced quite a ways from only a recreation vehicle. 

They are now a valuable part of daily life and continue to provide everyone with a sense of excitement and enjoyment.

How much is a Honda ATC 70 worth?

What is the value of a Honda ATC 70 worth? The original MSRP for a model in 1983 was $549. Due to the car’s rarity, the current retail price ranges from $165 up to $4,360.

What is the fastest Honda ATC?

Honda ATC 250R

It’s those 1986/1985 versions that are known as the most potent and fastest versions of the ATC250R Honda. The front and rear suspension travels were now 9.8 inches, and it utilized the same ProLink technology used in the previous generation.

How much is a Honda 3 wheeler worth?

What is the price of the Honda Big Red 3 Wheeler? In its initial launch, prices suggested for the retail of the Honda Big Red 3 Wheeler was $1,648 for the ATC 200 and $1,848 for the 200E/ES. The trike’s price can range between 1100 to $1830, depending on whether the vehicle is properly maintained or not.

What does Honda ATC stand for?

The first Honda ATV was an ATC with three wheels, also known as an All-Terrain Cycle, initially dubbed the US90 and eventually changed back to ATC90.

Why did Honda stop making the 250R?

Honda stopped producing the 250R due to the consent decree-law (a relatively unknown fact). Honda was the only one associated with the government; other manufacturers just performed “follow who is leading” Honda sacrificed Trikes and performance quads to reduce the tax burden on their cars coming to America.)

Are 3 wheelers safer than motorcycles?

The trike’s stability means it is safer to ride in adverse conditions, on gravel or sand, than a traditional motorcycle. Its stability also ensures it is less likely to fall over. Trikes also have the advantage of being more prominent and, therefore, more noticeable than a standard motorcycle.

Honda ATC 70 FAQs

1. Where can I buy the 1983 Honda ATC 70 Christmas Special?

It isn’t possible to buy this model or discover it on auction or trader websites. The units were offered for raffles to dealers in the area and have become extremely scarce. You might be able to locate clones. But, you’d be able to tell if you’ve found an original model since their price is much higher than basic models.

2. What is the value of a Honda ATC 70 worth?

The original MSRP of the 1983 model was $549. Because of its rarity and its current pricing, it can range from $165 to $4,360. The vehicles that cost $3500 and upwards are typically in good condition, run flawlessly, and come with an aluminum frame coated with powder, a rebuilt power mill, and original plastics. 

There are some of these collectibles that are highly sought-after (1983-1984 versions) within Osaka, Tokyo, and Shizouka, Japan. The remainder is scattered throughout various US regions. Fun Facts: For hard-core collectors, there’s Daytona-Orange 1973 Honda ATC 70 (custom-built by Honda and donated to Jackson 5) waiting in Barber Motorsports Museum in Birmingham. Get in touch with Motor Cycles (US) for more details.

3. Which is Honda ATC 70 top speed? 

The maximum speed of the Honda ATC 70 is 30 miles per hour.

If you increase the bore to 75-80cm3, it can reach up to 40 mph/64 km/h. Adding a high-performance exhaust system and larger-sized carburetors can provide an additional 2-3 miles.

4. What is where Where is Honda ATC 70 VIN located? 

It is possible to locate the VIN (which is the car’s date and year) in the frame on Little Red. Take the 13-digit code and insert it into the VIN decoder in order to identify the specifics for your Honda ATC 70.

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