Suzuki Quadzilla 500 Specs & Review QuadRacer LT500R 2022

Suzuki Quadzilla 500: A nickname derived from Gojiraor Godzilla and the Suzuki Quadzilla 500 is equally powerful and terrifying like the Japanese “King of Monsters.

Since its introduction, this legendary sport quad left all riders and enthusiasts stunned. 

Suzuki Quadzilla 500

The apparent turn argued powerband and incredible agility have captivated the riders to a large degree – an experience that is similar to the fictional creature from 1954 that terrorized all of Tokyo and caused the city to fall into ruin.

The Suzuki Quadzilla 500 (a.k.a. Suzuki QuadRacer LT500R) is widely regarded as the most powerful production ATV ever built and is one of the most powerful models in the world. 

It was manufactured from 1987 to 1990 the sport quad had the power of 51 horses and a displacement of 499 cm3 for the piston which was the first 2-stroke model on the market.

In spite of its brief existence, however, even though it was a short-lived affair, the Suzuki 500 Quadzilla continues to be hailed among the best racing machines ever made. 

Find out details about this ATV which shaped contemporary performance quads, along with the specs of the machine, its highs and lows, and other notable features that put the Quadzilla among the same class as Japan’s fire-breathing beast.

Suzuki Quadzilla 500

The Tale of the Beast – Quadzilla 500

Its Quadzilla 500 was, at least among the most intriguing sports quads that have ever been produced by an ATV manufacturer. 

It’s not because of its size or the fact that it has a fire-breathing engine, but its name, which is well-known.

For the majority of ATVs available it is the manufacturer who gives them a name to make it easier for consumers to recall and to promote. But this wasn’t the case for the LT500R.

Although it was initially released in the form of the Suzuki QuadRacer LT500R in 1987 The four-wheeler was later well-known as Quadzilla which is a reference to the Japanese Godzilla. 

Similar to the huge capacity and size of this 1950’s silver-screen beast, the Quadzilla was massive powerful, fast, and quick to crush any quad on track. 

In spite of its flaws with the suspension’s design and geometry, it was perfectly logical to designate the machine with an appropriate name to reflect the capabilities it offered.

Alongside its massive dimensions and speed as well as its incredible speed and size, it is also incredibly fast and large.

LT500 Quadzilla is famous for its fame. While there’s no such thing as over-the-top in the sport of cycling, some enthusiasts considered the LT500R as too strong and risky.

In reality, the riders’ indifference to the power of the quad and their disregard for the safety of the rider led to the machine acquiring a negative reputation, which could have led to its demise as well as its current value as a collectible.

Suzuki Quadzilla 500 Specs & Features Engine

It is the Suzuki LT500R is powered by two strokes of a liquid-cooled SAEC motor mill. 

It has a bore-to-stroke ratio of 86×86 millimeters (3.386 and 3.386 inches). Piston displacement is 499 cubic centimeters (30.4 in3) and the corrected compression ratio stands at 6.3:1. 

A flat-slide Mikuni TM38SS carburetor handles air-fuel mixture, supplemented by polyurethane-foam-element air filtration.

Suzuki’s Automatic Exhaust Control (SAEC) power valve increases the LT500R’s powerband at all RPMs and results in the test on the Dyno Quadzilla 500 maximum speed of the speed of 82 miles per hour (132 kilometers/h) and a power output that is 51 RWHP (37.5 kW). 

Certain owners report their machines with 70 horsepower, 62.37 Nm (6.36 kg-m 46.6 ft-lb) max torque, and well above 100 miles per hour (161 km/h) when modified to the right level and the correct gearing.

It is important to note that the configuration of the engine of the Suzuki LT500RH model of 1987 differs from those of models made later in the year. Below are some changes to the Quadzilla beginning with the 1988 LT500RJ

  • A wear-resistant molybdenum layer has been affixed on the inside of the piston. In addition, the circular groove’s diameter has been dominated from 19.9 millimeters to 19.5 millimeters, and its length was increased by 1 millimeter.
  • The shaft for the oil seal balancer size/I.D. was increased from 23.6 millimeters to 30.8 millimeters. The same is true for the shape of the crank balancer. Suzuki modified the form that the balancer for cranks.
  • The cover for the cylinder head has been replaced and cannot be swapped between the ’87 and 1988 models.
  • The 1987 LT500Rs came with eight (8) Reed valves and models that followed included the equivalent of six (6).
  • The markings on the valve’s retainer for the exhaust varied from 250 up to 500.
  • The method of mounting the polyurethane foam element has changed from screw-type to clip type.
  • Main pilot, main, and start-up jetting was different between the original and subsequent versions that comprised Suzuki LT500. Suzuki LT500.

Fuel & Lubrication

The fuel tank’s capacity is 13 Liters (3.4 US gallons, inclusive of reserve of 1.3-liter/0.34-US gallon reserve) of low-lead gasoline that has an optimum PON 85-95/RON89+ rating, with five percent of MTBE (Methyl Tertiary Butyl Ether) with a minimum of 10 percent ethanol or five percent methanol. It is also formulated with appropriate corrosion inhibitors and cosolvents.

The sport quad’s Lubrication system comes with a fuel-oil premixture 20:1 that calls for SAE 20W-40 Suzuki CCI/CCI Super 2 Cycle oil or equivalent. 

The capacity of oil ranges from 1.0 1 liter (1.06 US quarts – change) or 1.1 1 liters (1.16 US quarts – overhaul). 

For the best results, choose motor oils that have a minimum API quality of SJ+ that meets JASO the T903MA standards.


A constant-mesh 5-speed transmission as well as a multi-plate, wet eccentric clutch (with an up-down and down-down shift sequence) provide motor power of the LT500R. 

A Takasago RK520 SMOZ10S O-ring seal chain (96 links plus joint) manages wheelspin and is able to be substituted with an RK GB520XSO120 racing chain (view at Amazon) in the event of damage or wear. 

A counterbalancer driven by gears reduces vibrations in the engine and contributes to the vehicle’s smooth and stable performance – whether on trails that are wooded or on technical tracks.

Primary Reduction Ratio 2.142 (60/28)
Final Reduction Ratio 3.076 (40/13)
Transmission Gear Ratio (Low) 2.416 (29/12)
Transmission Gear Ratio (2nd) 1.733 (26/15)
Transmission Gear Ratio (3rd) 1.333 (24/18)
Transmission Gear Ratio (4th) 1.100 (22/20)
Transmission Gear Ratio (Top) 0.909 (20/22)


It’s powered through a kick-start system that is the primary one as well as Suzuki “PEI” CDI with an operating time of 4deg- 1.5deg BTDC @ 1000 RPM, 15deg + 0.5deg at 5,500 RPM. 

The battery also features an encapsulated flywheel magneto that has an output of 13-14V with a 5000 RPM which functions as a charging system.

Additionally, it needs the NGK B8EGV Spark plug, which has an 0.55-0.65 millimeter (0.022-0.026 inches) gap, and a 12V 12Ah/(10 HR) YTX14AH-BS battery (view on Amazon) with a total size of 134x89x 163 mm (5.31 3.50 x 3.50 6.56 inches). 6.56 in).

Notice: Canada releases require an NGK BRO8EV (0.5-0.6 millimeters, 0.020-0.024 inch gap) spark plug.

Tires & Brakes

The stock rubber comprises AT21 7-10 front and AT20 11-10 back tires with 5/130 mm and 4/166 mm bolt patterns. 

They are completely roped tires that fit onto aluminum wheels. Triple hydraulic discs (view on Amazon), each with a single-piston-caliper design, complete the Quadzilla’s tire-and-wheel assembly.

The recommended cold tire pressure in front tires would be at least 30kPa (0.30 kg/cm2, 4.4 psi) and 25 kPa (0.25 kg/cm2, 3.6 psi) for the rear tires. 

It is possible to increase the tire pressure up to 35 kPa (0.35 kg/cm2, 5.1 psi) if the capacity of your tire is between 80 and 120 kg (175-265 pounds.). 

Do not exceed the limit between 45 and 45 kPa (0.45 kg/cm2, 6.5 psi) when inflating tires or up to 250 kPa (2.50 kg/cm2 36 PSI) when placing tires.


Suzuki Quadzilla


The front suspension is comprised of dual A-arms, each with an adjustable spring preloads and 4 ways of rebound damping. 

The rear has a progressive-rate/Full Floater linkage (box-type aluminum swingarm and remote gas-charged damper) with adjustable preload, 21-way compression, and 26-way rebound damping.

Each configuration offers 9.1 inches/231 millimeters in wheel movement (already considered adequate in the past) and others could be unable to match with modern trail quads.

The angle of the steering at 32deg (inside) and 25deg (outside) The toe-in is between 11 and 19 mm (0.4-0.7 millimeters). 

The minimum ground clearance is 110 millimeters (4.3 inches) at the rear axle, and the wheelbase is 1,345 millimeters (53 inches). 

Turning radius of 2.8 meters/9.2 feet, and while it’s not as big as Suzuki’s own Vinson 500, makes for easy maneuverability on technical trails and corners.

It is true that the Suzuki 500 Quadzilla did receive some refinements to its chassis throughout its four-year production. But, the majority of these improvements are cosmetic (changing color of the A-arms) in addition to cost-effectiveness in manufacturing.

 The rear rebuildable Showa damper was built to the specifications of Suzuki (after that of the RM range of MX bikes from the 1980s) however

it was not able to add any enhancements to the quad’s tiniest ground clearance. Fortunately, taller tires, as well as a lift kit, can increase the rear suspension and create room to install an additional skid plate.


The overall dimensions include 75.6 7.4 x 47.4 75.6 x 47.4 43.7 inches (1,920 1205 1110 mm to W to H).

The seat height is 790 mm/31.1 inches, while the front and rear track are 1,030 millimeters (40.6 inches)/900 millimeters (35.4 inches).

The dry weight of the car is 178 kilos (392 lbs. ) and the GVWR (Gross Vehicle Weight Rating) is estimated to be 311 kilograms (686 pounds.) 

which includes a complete tank, weight of the rider and cargo as well as accessories.

Notice: Even with improvements to the chassis the quad’s length width and height remained the same during its entire production.


It is the Suzuki LT500R is a huge machine, and is even slightly bigger than its predecessor, the Vinson 500. Its exterior appears like a more powerful variant of the 1985 model that comes of the QuadRacer family. 

Both are similar to the sporty designs that are available in blue and yellow color schemes. 

There is only one difference in the location of the vane location on the grille on the radiator of both machines.

In terms of differences in the LT500R versions, the earlier models featured silver-colored dual A-arms.

Later, they were switching to white in 1989-1990 models. The 1987 LT500RH had large A-arms constructed of square tubing.

The ’88 LT500RJ’s A-arms had circular tubing. It was slightly shorter, and 45percent lighter than the previous. 

The graphics were different for every year. Apart from the 1987 Model LT500RH, all models included a reinforced rear crossbar since it was more prone to be bent.

Apart from that aside from the above, other than that, the Suzuki Quadzilla 500 received very few improvements during its lifetime. 

It is worth noting that an extended front bumper, a fiberglass skid plate, and aerodynamic fenders come with the car. 

These features are not just there to shield the quad’s bottom and sides from scratches but also enhance the overall race-inspired design.

Worth of a Suzuki LT 500

The price list for the Quadzilla 500 began at $3,299 but only increased by $1,000 for its production version (or with increments of $300 to $400 each year). 

Its value is between $7,900 and $10,350 in the present. 

Because it was in an entirely distinct category at the time, there’s no way to compare its value with the other models.

Year – Trim – Model # List Price Retail/Trade-In Values
1987 Suzuki LT500RH QuadRacer $3,299 $255 – $1,935
1988 Suzuki LT500RJ QuadRacer $3,599 $300 – $2,045
1989 Suzuki LT500RK QuadRacer $3,999 $300 – $2,140
1990 Suzuki LT500RL QuadRacer $4,299 $325 – $2,250

Listings for auctions on Craigslist, eBay, and other trading sites have a resale value ranging from $3,600 and $4,000. 

The majority of these are older models from 1987 and 1988. It is rare to find the ’89 or ’90 Quadzillas available for sale since they were on the center of all of the improvements Suzuki offered to the quad, which made it very difficult for those who love the quad to sell. 

There are however a few available listings for less than $1,000. Make it a habit to examine these units prior to purchasing, since they’re usually in a poor state or are being offered as parts.

A secondhand model that is in good condition will normally require only the following items: the brand-new Stage-4/5 Elka shocks (view on Amazon) polished aluminum as well as paddle tires for the dunes.

 The most costly mod you could require is a complete motor rebuild that includes the cylinder porting, the exhaust clamps in billet, new silencer and air filter clamped on, as well as a larger carburetor that costs around $6,000 for the entire. 

If you just need to build up the rear professional outfitters like Duncan Racing can fabricate a chrome-plated +2 Laeger swingarm for the 500cc Quadzilla at a cost of around $1000.

Quadzilla – The Good and Bad

The Good and Bad

It was the Quadzilla 500 was an incredible powerhouse in performance that left many riders in a state of shock. 

The fear of failure turned into recklessness for a few of these riders, who resulted in them getting hurt.

Then, these incidents caused the four-wheeler to get an image of being a sham, causing Suzuki to stop manufacturing of LT500R within just four years.

A lot more could have been done to enhance the quad’s capabilities with more time. 

The Quadzilla would’ve been extremely amazing if the Quadzilla were still manufactured in mass quantities in the present and had advanced technologies like IRS as well as fuel injection. 

We are, however, now trapped with a rare and three-decade-old design. We can only pray that its previous owners showed the dog the best care possible so that we don’t end up with the quad that is in need of lots of assistance.

Quadzilla 500 Problems

The LT500R’s shortcomings are due to the breathing and jetting that it has in stock which is a drawback of power valves that are not refined (variable outlets for exhaust). 

Many enthusiasts and test drivers would like a more tight gap between the 2nd/3rd gears as well as 3rd/4th gears, to lessen the inconsistencies within both the transmission and powerband.

 Riders who aren’t experienced may discover that they have missed shifts because of the old-fashioned shift mechanism as well as the clutch.

Fortunately, an aftermarket engine kit can change the appearance of the motor in a positive way. 

Obtaining the gears from stock or altering the location of 3rd/4th and 2nd/3rd gears (a DIY solution by certain mechanics) can also help get a better ratio of gears. 

There is a wealth of details online and in dedicated forums that offer the most effective tips on how to tune or restore the LT500R until it is near-perfect.

Requires Skill and Experience

Fans of jumpers will be glad to know that it doesn’t require a lot of revs to lift the Quadzilla quite a distance above the ground. But, not everyone has the chance to enjoy experiencing this thrill.

 In contrast to sport quads with 250cc that are a great choice for beginners as well as more experienced riders, The Suzuki LT500R is not as friendly to beginners and more advanced riders. 

It requires a certain amount of expertise and knowledge as well as an able grip to prevent your machine (and your heart) from escaping you.

About Suzuki

Suzuki Motor Corporation is one of the Big 4 Japanese forces to be considered in the motorsports and automotive industries. 

Established at Hamamatsu in 1909 The Japanese company was initially weaving looms and then expanded its products within 28 years.

 Suzuki started manufacturing small cars in 1937, and later to ATV manufacturing in the 1980s, which led to Suzuki Quadzilla 500.

Since its inception, Suzuki has successfully pioneered innovative concepts and technologies and continues to lead the way even today. 

It’s this unwavering pursuit of excellence that helped make the company a juggernaut in the automobile sector and one of the most successful automakers in terms of production across the globe. 

Today, Suzuki has over 133 distributors across 192 countries that provide premium 4WD automobiles, vehicles, motorcycles, as well as marine/internal combustion engines to the end-users.

Conclusion – Suzuki Quadzilla LT 500 Review

It might not be the most powerful stock sport quad available however it is the Suzuki Quadzilla 500 continues to be adored by racing enthusiasts all over the world. 

It’s simply unfortunate that technologically adept racers have ascended to respect the quad even though it’s no longer available for sale. Absolutely, it is a must-have.

Quadzilla 500 is a filth-eating beast that is hard not to fall in love with. In the meantime, until Suzuki revives the LT500R The racing community will continue to feel unfinished – much like the situation in Tokyo during the time in the form of Godzilla.

How fast is a Suzuki LT500R?

It is believed that the Suzuki LT500 hit a top speed of 80 miles per hour when it was tested in 1988. What exactly do you know about the speedy ATV model that earned it Quadzilla?

How much HP does a LT500R have?

The Suzuki Quadzilla 500 (a.k.a. Suzuki QuadRacer LT500R) is thought to be the fastest production ATV ever built and is one of the most influential models in the world. From 1987 until 1990, The sport quad was equipped with 50-hp power output and an engine displacement of 499 cm3, the first two-stroke engine on the market.

Are quadzilla any good?

The engine is very noisy and vibrates when you pull hard. It feels rough in comparison to other quads with petrol. The suspension is firm and has decent range and damping, so the ride quality is good. The already heavy steering weighs more when you corner under power.

How many gears does a quadzilla have?

How Many Gears Does A Quadzilla Have? An additional Suzuki PEI (CDI-type) ignition system allows you to start engines for Quadzilla. In the list of parts are the Mikuni flat slide carburetor, TM38SS and the #520 chain, which is an O-ring sealed drive as well as a five-speed manual clutch.

How many cc’s is a Suzuki quadzilla?

Two-stroke high-performance, water-cooled, 499.5cc engine that comes with “Suzuki Automatic Exhaust Control” powered the Suzuki LT500R – also known as “Quadzilla” -.

What years did Suzuki make the lt500?

The majority of riders of today don’t even imagine what a car similar to that could look identical to. However, Suzuki provided the powerful 500 between 1987 and 1990. Its powerhouse performance brought it the name “Quadzilla,” and it gained a fan base that is active even today.

Where are CFMOTO quads made?

But the JV is more tangible than the one with the brand new, modern manufacturing facility located in Hangzhou, where the future CFMOTO bikes will be produced.

What is the fastest side by side?

The RZRXP 4000 power is the top model in this class of machine, with the most potent engine available in a 4-passenger side-by-side. With 107 HP, it offers the highest speed of all UTV side-by-side.

Who makes the best quad?

Honda ATVs are the fastest quads. They have an explosion-proof transmission and utilize metal gears. They can withstand challenging terrains, are durable and will continue to kick even after enduring a lot of abuse. Other trusted ATV brands are Kawasaki, Polaris, Yamaha, Arctic Cat, Argo, SYM, Can-Am, and CFMoto.

How common are ATV deaths?

In the United States, around 135,000 people are injured in accidents involving ATVs. There are about 300-400 people killed each year in these accidents, with the majority of them being children younger than 16 years old.

Suzuki Quadzilla 500 FAQ

1. How fast is a Suzuki quadzilla 500?

The Suzuki Automatic Exhaust Control power valve amplifies LT500R’s powerband across every RPM, resulting in a Dyno-tested Quadzilla 500 top speed 82 mph (132km/h) and a horsepower rating of 51 RWHP (37.5 kW).

2. What years did Suzuki make the 500 quadzilla?

The Suzuki Quadracer 500 was also available in 1987/88/89/89/90. These legendary machines were made only for four years. It’s the machine that ATV riders who are serious about their sport seek out and restore.

3. Is quadzilla any good?

This machine is easily the most fuel-efficient, consuming over 70% more fuel than the Honda around the same course. The disc setup has average stopping performance but the lever feel is poor.  It feels a little crude compared to other petrol quads. However, the firm suspension offers decent travel and damping so ride quality.

4. Is CF Moto quadzilla?

CFMOTO is a world-class ATV manufacturer that has over 58% of Europe’s ATV market.

5. How much is a quadzilla 500 worth?

The Quadzilla 500’s list price was $3,299 and increased by just $1,000 when it became a final production model. Or in increments $300-$400 per year. It would have a value between $7,900 to $10,350 today.

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