Suzuki LTR 450 QuadRacer (Specs and Review)

2006 noticed the delivery of the LTR 450 – a high-performance machine aimed toward excelling on the motocross observe. Enlisting the racing experience of WPSA Professional ATV racer Doug Gust, Suzuki’s crew of specialists began designing the four-wheeler that may quickly be the progenitor of new-generation sport quads. The end result? A race-ready beast that was fast and nimble, dealt with beautifully and fed off the adrenaline of thrilled, gutsy riders.

The Suzuki LTR 450 (a.ok.a. QuadRacer LT-R450) is undoubtedly among the many high sport ATVs of all time. Sporting a 450-cc RM-Z450 engine, sturdy chassis, spectacular suspension, and aggressive styling, this purpose-built machine rallied true sport ATVs within the early 2000s.

No different automobile may have carried out a greater job at succeeding the smaller-displacement however revolutionary LT250R. Like its sibling, the LTR 450 boasts award-winning options and has accolades etched within the historical past books. Extra importantly, it efficiently amplified sport driving – a distinct segment that its predecessor created nearly 4 many years again.

Proceed studying this information and be taught extra in regards to the specs and options, praiseworthy traits, and design enhancements of the Suzuki QuadRacer LTR 450.

White Suzuki QuadRacer R450 ATV

Born for the Racetracks

Since its launch, the 2006 LTR 450 (Suzuki QuadRacer LT-R450) has established itself as a dominant pressure on the earth of motocross and GNCC racing – the identical manner that champion racer Dustin Wimmer has commanded respect within the ATV Professional MX scene. From the get-go, each Wimmer and the purpose-built machine have received back-to-back championships within the stated sequence.

However it was not solely Wimmer who positively contributed to the four-wheeler’s repute. Racing champ Doug Gust performed an important position within the machine’s analysis and growth, whereas manufacturing facility Suzuki rider Chris Borich triumphed over 10/13 rounds of the 2009 GNCC sequence aboard the LTR 450.

Take a look at riders can affirm the competencies of the Suzuki LT-R450, because it additionally performs excellently on numerous sorts of terrains exterior of GNCC-style MX tracks, corresponding to wooded trails, mud holes, and steep inclines. The machine’s fuel-injected, 4-stroke RM-Z450 energy mill, broad stance, centered exhaust, and long-travel suspension make this doable, even when recent from the showroom flooring.

Not like its opponents, it doesn’t produce abrupt energy. Nonetheless, the entrance finish can elevate off the bottom fairly simply – because of its very good throttle responsiveness.


There’s much more than energy that units the QuadRacer aside from same-class quads. Whereas everybody claims to supply the typical client one thing distinctive or completely different, the LTR 450 was the one inventory sport ATV throughout its time that broke via the cliché.

It was competitively race-ready with out the necessity for an costly chassis, suspension mods, and different bolt-on aftermarket elements. If it did want something, really useful add-ons can be LTR 450 nerf bars, Yoshimura Cherry Bomb, and a kill swap, which might be extra for aesthetics (or on account of rider desire) than enhancing efficiency.

2007 LTR450 QuadRacer Onwards

Issues solely bought higher with the 2007 LTR450 QuadRacer onwards, with Suzuki being laser-focused on eradicating the 4×4’s weaknesses and amplifying its strengths. There are little to no adjustments on the surface. However internally, there are over 100 alterations carried out to its engine and suspension techniques.

Essential adjustments embody improved low-end energy, resprung/revalved suspension, and different minor updates. Because of this, the QuadRacer acquired a 3-hp enhance in claimed horsepower, plusher suspension, and enhanced experience high quality.

Suzuki LTR 450 Specs & Options (QuadRacer LT-R450)


A liquid-cooled, 4-stroke DOHC engine with a 95.5 × 62.8 mm (3.76 × 2.47 inches) bore-stroke ratio and 11.7:1 compression ratio brings this mid-size sport ATV to life. Engine displacement is 450 cm3 (27.5 in3) delivered by digital gas injection, which is extra responsive and fuel-efficient than a typical carburetor.

The engine configuration lends to its 78-mph (125-km/h) high pace and a most horsepower of 41 hp (41.6 PS). As for torque, it might be protected to say the utmost worth for the LT-R450 is round 43.9 Nm (4.48 kg-m, 32.44 ft-lb) ± 18% @ 7,600 RPM – if referencing to the dad or mum RM-Z450 powerplant.

Gas & Lubrication

The Suzuki LTR 450’s carburetion system is gas injection with a multi-hole injector and 42-mm throttle physique (dimension elevated to 43 mm for post-2007 fashions). Gas capability together with reserve is 10 L/2.6 US gallons of unleaded gasoline with a RON 90 or increased score (RON 95 exterior North America) containing < 5% MBTE, < 10% ethanol, or < 5% methanol.

It has a dry-sump lubrication system with a polyurethane foam air filter. The lubrication system (known as Suzuki Superior Sump System) is new and makes use of two feed pumps – one supplying the transmission and one other scavenger pump feeding the crankshaft and different engine elements. Utilizing two separate feed pumps make for extra compact crankcases whereas enhancing the LTR 450’s shifting and clutch really feel.

Alternatively, oil capacities are as follows – 1.2 L/1.3 US quarts (change), 1.3 L/1.4 US quarts (filter change), and 1.4 L/1.5 US quarts (overhaul). Producer suggestion is SAE 10W-40 Suzuki Efficiency 4-stroke oil with an API grade of SJ+ assembly JASO T903 MA requirements. Relying on ambient temperature, it’s possible you’ll go for different viscosity grades – SAE 10W-30, 10W-50, 15W-40, 15W-50, or 20W-50.


A guide (close-ratio) 5-speed fixed mesh return system (left-foot operated) and a moist, multi-plate clutch meeting with a 1-down-4-up gearshift sample ship energy to the wheels. An RK 520SMOZ10S O-ring chain (with 96 hyperlinks + joint) handles wheel spin.

Gas injection re-mapping with the assistance of a Yoshimura Cherry Bomb enhances energy supply of the quad. Set up of this part works finest with adjusting the gearing – particularly switching to a 12-tooth entrance sprocket, which will increase low-end grunt and makes the automobile higher suited to trails with out sacrificing floor clearance.

The inventory gear ratios are as follows:

Major Discount Ratio 2.851 (77/27)
Ultimate Discount Ratio 2.571 (36/14)
Transmission Gear Ratio (Low) 2.076 (27/13)
Transmission Gear Ratio (2nd) 1.647 (28/17)
Transmission Gear Ratio (3rd) 1.333 (28/21)
Transmission Gear Ratio (4th) 1.095 (23/21)
Transmission Gear Ratio (High) 0.913 (21/23)

Ignition & Lighting

The LTR 450 has a fully-transistorized digital CDI (Capacitor Discharge Ignition), whereas an electrical starter powers up the four-wheeler. A triple-phase A.C. generator with a rated output of roughly 240 W @ 5,000 RPM powers up the automobile’s lighting system and different digital equipment. Ignition timing is 8° BTDC @ 1,800 RPM (preliminary “F” mark). Required fuses are 20 Amp (fundamental) and 10 Amp (fan, ignition).

All fashions are fitted with a 12V 21.6 kC (6 Ah)/10 HR YTX7A-BS battery (view on Amazon) with dimensions of 150 x 87 x 94 mm (6.00 x 3.44 x 3.75 inches – L x W x H). Moreover, the quad requires an NGK CR8EB spark plug with a 0.028 – 0.031 inch hole and tightening torque of 11 Nm (1.1 kgf-m, 8.0 lb-ft).

Relying on how scorching your automobile’s engine runs, it’s possible you’ll go for an NGK CR7EB (hotplug) or NGK CR9EB (chilly plug). A 16-bit CPU and 64-kilobyte ROM ECM management the LTR 450’s gas injection system.

GSX-R and Hayabusa-inspired 40-watt multi-reflector headlights and compact LED brake/taillight add to the QuadRacer’s aggressive styling and sporty nature. The headlights are purposely designed for simple elimination with a single bolt. Warning lights include 12V 3.4-watt bulbs indicating impartial, gas degree, gas injection, and coolant temperature and mount on the handlebar cowl.

Yellow 2007 Suzuki LTR 450 ATV

Tires & Brakes

Inventory rubber consists of tubeless Dunlop KT381/KT385 compound tires measuring AT20 × 7 R10 on the entrance and AT18 × 10 R8 (view on Amazon) on the again. Rim sizes are 10 x 5.5 AT and eight x 8.0 AT, respectively, with a 4/110 bolt sample and 10 x 1.25 mm lug nuts. When airing the tires, the really useful stress is 45 kPa (0.45 kgf/cm2, 6.5 psi), offered payload capability doesn’t exceed 110 Kg (243 lbs).

Entrance-wheel hubs are aluminum, with rear ones product of solid metal. 160-mm (6.3-inch) twin hydraulic discs with 25.4-mm dual-piston Nissin calipers connect to the entrance hubs. In the meantime, alone 190-mm (7.5-inch) hydraulic disc with a 34-mm single-piston Nissin hydraulic caliper mounts on the rear axle. A operated by hand parking brake completes the braking system of the QuadRacer.


Enclosed within the diamond-type spine metal body is an unbiased, double-wishbone with oil-damped coilovers and a beefy rear swingarm with piggyback-reservoir Kayaba air/oil shocks. Each back and front shocks are adjustable, have a fade-resistant coating, and supply a respective wheel journey of 254 mm (10 inches) and 277 mm (10.9 inches). 

The steering angle is 41°, and the caster angle is 8° with a path size of 30 mm (1.18 inches). Distance between the axles (wheelbase) is 1,285 mm/50.6 inches. The turning radius is 3.5 m (11.5 ft), and the bottom clearance is 240 mm (9.44 inches).

Your entire suspension setup of the LTR 450 contributes to the automobile’s low middle of gravity whereas offering a beneficiant quantity of wheel journey on all fours. Each spring preload and rebound damping may be totally tweaked, with each high- and low-speed compression damping independently adjustable.

The swingarm materials delivers the suitable rigidity wanted for a racing machine and clean motion over uneven, gnarly terrain. All in all, the Suzuki QuadRacer has the widest tracks, longest wheelbase and wheel journey, and lowest seat peak and middle of gravity in its class.


Total automobile dimensions are 72.6 x 49 x 42.7 inches (1,845 x 1,245 x 1,085 mm – L x W x H) and are the identical set of measurements for all LTR 450 models launched throughout all markets. Entrance and rear tracks are 1,045 mm (41.1 inches) and 985 mm (38.8 inches), respectively.

Seat peak is good for accommodating medium-built to taller riders at 30.7 inches (780 millimeters). Dry mass is 167 Kg (368 lbs) – barely heavier however nonetheless throughout the similar vary as its counterparts, the Honda TRX 450R and the Yamaha YFZ450.


A contributing issue to the LTR 450’s dry weight is its body, composed of high-tensile metal (the identical composition as its swingarm). Suzuki determined to maintain it unchanged and never swap it out for an aluminum framework regardless of market tendencies. As an alternative of changing the chassis, the rear fender brace and brake pedal had been aluminum/solid aluminum. Equally, the outer clutch and magneto covers had been product of light-weight magnesium alloy, serving to cut back weight.

Different weight financial savings efforts embody elements just like the machine’s cylinder bore, plated with a nickel-phosphorus-silicon-carbide coating (a.ok.a. SCEM or Suzuki Composite Electrochemical Materials). SCEM plating is lighter, thus resulting in weight discount – on high of higher warmth switch, tighter piston-to-cylinder clearance, and improved put on discount.


The driving place is extremely engineered and primarily based on Doug Gust’s inputs throughout the conceptualization of the LTR 450 in 2006. It takes after the skilled racer’s driving kind, with a perfect relationship between the 46-mm serrated footpegs, conventional T-shaped seat, and handlebars.

The general styling is aggressive and made obtainable in Champion Yellow and White. The 2008 Suzuki LT-R450, particularly, has a Restricted Version trim that featured all-black wheels, body, and bodywork with a purple graphics package deal.

Yellow 2008 Suzuki LTR 450 ATV

Suzuki LTR 450 Value

Relying on the mannequin 12 months and trim, public sale listings for the LTR 450 vary between $1,500 and somewhat over $12,800. Secondhand automobiles with numerous add-ons/aftermarket elements promote for a mean of $4,500. Close to-mint models are valued at $7,000, not less than, and equip nerf bars, heel and body guards, Professional taper fats bars, and a custom-made graphics package. As if these weren’t sufficient, some pre-loved LTRs are powder-coated and street-legal.

Most of what you will notice on-line are ’06 and ’09 fashions, however there may be additionally a handful of 2007 LTR 450s in Champion Yellow and White. Out of the lot, the ’07 variations of the QuadRacer appear to be essentially the most reasonably priced. Not like most sport ATVs, these machines will not be scarce. So long as you see the fitting vendor and have the price range to spend, you may get your fingers on a well-maintained quad.

Listed here are the record costs for all LTR 450 fashions launched in North America. (Notice this desk doesn’t embody models offered by Suzuki exterior of the U.S. till 2012):

Yr – Trim – Mannequin # Record Value Retail/Commerce-In Values
2006 Suzuki LTR 450K6 $7,299 $2,970 – $3,905
2007 Suzuki LT-R450K7 $7,399 $3,010 – $3,960
2008 Suzuki LTR 450K8 (White) $7,399 $3,190 – $4,195
2008 Suzuki LT-R450ZK8 Particular Version (Black) $7,499 $3,220 – $4,240
2009 Suzuki LT-R450K9 $8,099 $3,395 – $4,470
2009 Suzuki LT-R450ZK9 Particular Version (Black, Black/Crimson) $8,199 $3,475 – $4,575

7 Highlights & Enhancements Put up 2007

With the variety of upgrades on the LTR 450 since its inception, its avid following can solely count on higher efficiency from its later-year fashions. And boy, does it not disappoint! Here’s a non-exhaustive record of exceptional enhancements seen on the quad since present process the stated adjustments:

1. High Pace

The Suzuki LTR 450 high pace in inventory kind improved from 74 to 78 mph on its third 12 months of manufacturing, besting the YFZ450 by 3 mph. Placing the entrance sprocket one (1) tooth forward and including a Yoshimura Cherry Bomb chip and open filter field lid furthers the pace score to 90 mph.

2. Suspension Internals

Entrance shocks got the identical Toshima coating because the rear ones. All different suspension internals had been modified (if not improved) for plusher suspension and general higher absorption, dealing with, and efficiency. These upgrades made an enormous distinction in 2008+ fashions and made the QuadRacer extra appropriate for absorbing landings from 90-foot jumps – an inconceivable feat on 2007 and earlier LTR 450 fashions.

3. Yoshimura Cherry Bomb

The Yoshimura Cherry Bomb bolts proper into the Suzuki LTR 450, permitting the QuadRacer to actually come to life (sans main overhauls) whereas bypassing built-in emission restrictions. Coupled with gearing adjustments and barely taller all-terrain tires like Carlisle Trail Wolf ATV Tires (view on Amazon), it turns the LTR 450 right into a woods-friendly quad.

4. ECM Logics System

Suzuki’s “ECM Logics System” screens throttle place and RPMs and the pace at which these components are hit. It’s also chargeable for measuring the timing of the rider’s response and adjusting the spray that helps management traction and wheel spin. Paired with barely taller tires, this added management made for higher cornering.

5. Anti-Vibration Steering Stem

An all-new anti-vibration steering stem on the 2008 Suzuki LT-R450 significantly diminished arm fatigue in rougher path circumstances. It additionally labored nicely with the quad’s metal body. However even with out the anti-vibe stem, the steering feels mild and nimble, plus there isn’t any arm pump.

6. Width

The automobile’s 49-inch width eliminates the necessity for Suzuki LTR 450 elements corresponding to MX-requisite aftermarket A-arms. Nonetheless, it doesn’t make the machine the most suitable choice for driving on tight, twisty trails. Inventory motocross-style tires and plastic skid plates are puncture-resistant and maintain up nice on wooded trails.

7. Upkeep

Regardless of having digital gas injection and an electrical begin system, basic servicing on the Suzuki LTR 450 is uncomplicated and a breeze to carry out. Periodic oil change and chain adjustment are as easy as filling up the gas tank, requiring solely primary instruments and know-how – and your trusty service guide.

Room for Enchancment

White 2008 Suzuki LTR 450 ATV

The Suzuki LTR 450 QuadRacer’s praiseworthy traits overshadow its flaws, making it seemingly good. Nonetheless, there are two standout objects riders would have favored to see modified on the quad.

  • Firstly, it has an enormous 49-inch width, which works to its drawback when it comes to the machine’s attraction to informal weekend riders.
  • Secondly, its footpeg peak is a tad excessive and makes the 4×4 really feel top-heavy when cornering.

Whereas the QuadRacer’s width is a given due to its motocross focus, nerf bars with built-in pegs (two inches decrease than inventory) simply clear up the machine’s propensity to tip over.

About Suzuki

Suzuki Motor Company is a Japanese company identified for industry-leading product choices just like the Suzuki LTR 450. And like most ATV producers, the agency has a wealthy and fascinating historical past and didn’t fairly begin within the automotive area. Based in 1909, Suzuki was first a weaving loom enterprise earlier than it turned the world-class automotive chief that it’s.

The corporate is globally identified for its slew of high-quality cars, bikes, 4WD automobiles, outboard marine engines, wheelchairs, and inside combustion engines. With over 133 distributors in 192 international locations, Suzuki is presently one of the vital profitable automakers by manufacturing worldwide.

Conclusion – Suzuki LTR 450 QuadRacer

The rationale behind the making of the LTR 450 is as noble because the automobile itself. Greater than creating an industry-leading ATV, Suzuki’s intention is inclusivity – getting extra folks concerned in racing by bringing down the price of buying a track-worthy 4×4. With the machine’s enjoyable issue and talent to tear via trails and clear sky-high jumps, it was inconceivable even for not sure leisure riders to say no.

Regardless of its stature, some riders really feel there may be extra available with the LTR 450 – even with its post-2007 fashions. For others, its price ticket continues to be considerably hefty and past what the typical client can afford. When it comes to inclusivity, the quad is like some other sport ATV whose affect on sport driving shouldn’t be as enormous as its producer want to consider.

So, these questions stay – “Did Suzuki handle to create a best-in-class sport quad?”, “Did the game driving neighborhood develop due to the QuadRacer’s existence?”. I’d say Suzuki efficiently completed each.

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