Suzuki Eiger 400 4×4 Specs and Review

Camo 2006 Suzuki Eiger 400 ATV

Suzuki has always been a master crafter of standout off-road sport quads. So, when something as basic as the Suzuki Eiger 400 4×4 comes along, the machine cannot help but get lost amid the cluster of rockstar race-type vehicles. For this reason, this article brings to light Suzuki’s unpopular but highly reliable four-wheeler that aims to break the stereotype.

The Suzuki Eiger 400 is a rec-utility vehicle introduced to the public in 2002. Sporting a powerful 376-cm3 engine, cable-actuated 2WD and 4WD, and a classic rugged look, this dual-purpose machine had just the right elements to provide no-frills, old-school fun.

From the onset, the Eiger struggled rising above its more popular siblings – despite targeting the rec-utility sub-segment. But that did not stop the series from producing 25 models between 2002 and 2008. Wondering about getting your own Suzuki Eiger 400? Read on and learn more about this modest but praiseworthy vehicle.

Baptism Through Fire

There is no better way than this section’s heading to describe the beginnings of the Suzuki Eiger 400. Introduced to the public at the turn of the millennia, this 376-cm3 machine superseded iconic legends such as the Suzuki KingQuad, LTZ400 Quad Sport, and LTR 450 Quad Racer. While its predecessors are all sport quads (which should not have mattered), it is the timing of its launch that made the Suzuki Eiger one of the most underrated mid-size ATVs Suzuki has ever made.

It may not have appeared on consumers’ radar of must-ride vehicles until halfway through its production run. But mind you – this brute had (and still has) a lot to offer its riders. The Eiger is packed with features perfect for cruising and outdoor adventures. Among these well-loved attributes are ease of shifting transmission, location of controls/levers, accessibility of engine and other mechanical components, and seamless engagement of 2WD/4WD – all of which ranked high with testers and enthusiasts.

Other practical features of the quad included:

  • High-radius fenders (great for taller tires).
  • A rugged-style grill.
  • Utility racks (front and back).
  • A front bumper designed for hassle-free winch (view on Amazon) installation.

The quad also offered comfortability and toughness that is excellent for any application – either for leisurely rides or all-day work. With all these in place, it was evident that a lot of thought was put into the Eiger’s design and functionality. And eventually, these same qualities earned the big-bore machine its rite-of-passage.

This video by DirtN’Diesel demonstrates how simplicity can be a beautiful thing, as the presenter points this out as the exact reason why he still has his ’05 model (time stamp – 4:45):

Price of a Suzuki Eiger 400

The price range of an Eiger 400 is between $4,349 and $5,899, depending on the year, trim, and driveline mode. The cheapest out of the models is the 2003 Suzuki Eiger LT-F400K3, while the most expensive is the 2007 Suzuki Eiger LT-A400FHK7 (Advantage Camouflage). Interestingly, the 4×4 trims are a tad more affordable compared to the 2×4 versions. Likewise, the camo models did not differ much in price versus base models – a steal for riders who loved hunter-themed body panels.

Auction listings are quite scarce. But if you spot any, resale units would usually show as Suzuki Eiger Quadrunners and fall within the range of $690 – $3,550. These quads are well-maintained, predominantly used in the ranch more than off-pavement, and may have Suzuki Eiger parts like a plow or a 25-gallon lawn and garden sprayer (view on Amazon) with an additional wand. Some may even come with a new battery, lockable top box, gun scabbards, or a bespoke padded shooting rail. However, others may have minor cosmetic damage or require a paint job. Expectedly, secondhand Eigers are sold online without titles.

The table below is a list of all Suzuki Eiger models and their corresponding list values:

Year – Trim – Model #List PriceRetail/Trade-In Values
2002 Suzuki Eiger 400 2×4 – LT-A400K2$4,699$690 – $905
2002 Suzuki Eiger 400 4×4 – LT-A400FK2$5,599$845 – $1,115
2003 Suzuki Eiger 400 2×4 – LT-A400K3$4,499$760 – $1,000
2003 Suzuki Eiger 400 4×4 – LT-A400FK3$5,299$920 – $1,210
2003 Suzuki Eiger 400 2×4 – LT-F400K3$4,349$735 – $965
2003 Suzuki Eiger 400 4×4 – LT-F400FK3$5,149$880 – $1,160
2004 Suzuki Eiger 400 2×4 – LT-A400K4$4,499$870 – $1,145
2004 Suzuki Eiger 400 4×4 – LT-A400FK4$5,299$1,045 – $1,375
2004 Suzuki Eiger 400 – LT-A400FCK4, Advantage$5,499$1,075 – $1,415
2004 Suzuki Eiger 400 2×4 – LT-F400K4$4,349$830 – $1,095
2004 Suzuki Eiger 400 4×4 – LT-F400FK4$5,149$1,020 – $1,345
2005 Suzuki Eiger 400 4×4 – LT-A400FK5$5,349$1,275 – $1,675
2005 Suzuki Eiger 400 – LT-A400FCK5, Advantage$5,549$1,320 – $1,735
2005 Suzuki Eiger 400 4×4 – LT-F400FK5$5,199$1,225 – $1,615
2005 Suzuki Eiger 400 – LT-F400FCK5, Advantage$5,399$1,280 – $1,685
2006 Suzuki Eiger 400 2×4 – LT-A400K6$4,499$1,345 – $1,770
2006 Suzuki Eiger 400 4×4 – LT-A400FK6$5,349$1,510 – $1,985
2006 Suzuki Eiger 400 – LT-A400FCK6, Advantage$5,549$1,560 – $2,050
2006 Suzuki Eiger 400 2×4 – LT-F400K6$5,199$1,560 – $2,050
2006 Suzuki Eiger 400 4×4 – LT-F400FK6$5,399$1,560 – $2,055
2007 Suzuki Eiger 400 4×4 – LT-A400FK7$5,399$1,510 – $1,990
2007 Suzuki Eiger 400 – LT-A400FCK7, Advantage$5,599$1,570 – $2,065
2007 Suzuki Eiger 400 – LT-A400FHK7, Advantage Camouflage$5,899$1,680 – $2,210
2007 Suzuki Eiger 400 4×4 – LT-F400FK7$5,249$1,575 – $2,070
2007 Suzuki Eiger 400 – LT-F400FCK7, Advantage$5,449$1,645 – $2,165

Suzuki Eiger 400 Specs & Features

Engine & Lubrication

Both LT-A400 and LT-F400 models share similar engine specifications from the Suzuki Eiger 400 carburetor to valve clearances to power and torque output. The only difference between these trims is their engine oil capacity – as dictated by the type of transmission each vehicle has. Eigers with automatic transmission has a slightly larger capacity than manual ones.

Suzuki Eiger 400 LT-A400K/FK Suzuki Eiger 400 LT-F400K/FK
Engine Brand Name Keihin
Engine Type 4-Stroke OHC
Cylinder Arrangement Single cylinder
Carburetion System Keihin CVK32
Engine Cooling Air cooling with SACS
Engine Fuel Unleaded gasoline of at least PON 87 or RON 91, containing MTBE (Methyl Tertiary Butyl Ether), < 10% ethanol, or < 5% methanol w/ appropriate cosolvents and corrosion inhibitor
Fuel Capacity 16 L/4.2 US gal (reserve – 2.9 L/0.8 US gal)
Fuel Economy 13.84 L/100 km (17 mpg)
Bore x Stroke Ratio 82 x 71.2 mm (3.23 x 2.80 in)
Compression Ratio 9.0:1
Displacement 376 cm³ / 22.9 in³
Valve Diameter Intake 30.6 mm (1.20 in)
Valve Diameter Exhaust 27.0 mm (1.06 in)
Valve Clearance Cold Intake 0.05 – 0.10 mm (0.002 – 0.004 in)
Valve Clearance Cold Exhaust 0.22 – 0.27 mm (0.009 – 0.011 in)
Horsepower 22 hp/22.3 PS (16.4 kW @ 3,300-3,900 RPM)
Top Speed 45-50 mph (72-80.5 km/h) – marketed
80-85 mph (128-136.8 km/h) – owners’ claim
Air Filtration Polyurethane foam element
Lubrication Wet sump
Engine Oil & Quantity 3 L (3.2 US quarts) – oil change
3.2 L (3.4 US quarts) – filter change
3.5 L (3.7 US quarts) – overhaul
SAE 10W-40, API SJ with JASO MA
SAE 5W-30, 10W-30, 15W-40, 15W-50, 20W-50 – depending on ambient temperature
2.9 L (3.1 US quarts) – oil change
3.1 L (3.3 US quarts) – filter change
3.4 L (3.6 US quarts) – overhaul
SAE 10W-40, API SJ with JASO MA
SAE 5W-30, 10W-30, 15W-40, 15W-50, 20W-50 – depending on ambient temperature

Drivetrain

Depending on trim, some Suzuki Eiger 400s offer selectable 2WD and 4WD driveline modes activated via a lever located on the right handlebar. A two-speed Quadmatic™ V-belt transmission (with reverse) or a 5-speed forward constant mesh and a locking front differential send engine torque to the front wheels via a thumb switch. A wet-shoe, automatic centrifugal clutch handles shifting, and a straightforward up-and-down shifter. Shift sequence differs for models with each type of transmission.


Suzuki Eiger 400 LT-A400K/FK Suzuki Eiger 400 LT-F400K/FK
Clutch Wet shoe, automatic, centrifugal type Wet multi-plate, automatic, centrifugal type
Transmission Type Automatic variable ratio (V-belt) 5-speed forward constant mesh
Transfer 2-speed forward with reverse
Gearshift Pattern L-H-N-R (Hand operated) All up (foot operated)
Drive System Shaft drive
Primary Ratio 2.938 – 0.813 (Variable change) 2.392 (67/28)
Final Drive Ratio 3.600 (36/10)
Transfer Gear Ratio 2.500 (40/16) – Low
1.375 (33/24) – High
2.435 (35/13 x 19/21) – Low
1.296 (35/27) – High
Transmission Gear Ratio N/A 3.083 (37/12) – Low
1.933 (29/15) – 2nd
1.388 (25/18) – 3rd
1.095 (23/21) – 4th
0.913 (21/23) – Top
2.883 (34/12) – Reverse

Ignition

Electrical components are the same across all Suzuki Eiger 400 4×4 models. Should you need to replace stock batteries, you can go for any YTX14-BS battery (view on Amazon) format.


Suzuki Eiger 400 LT-A400K/FK Suzuki Eiger 400 LT-F400K/FK
Ignition Electronic ignition (CDI)
Ignition Timing 10° B.T.D.C @ 1,500 RPM
Spark Plug NGK CR7E or DENSO U22ESR-N
Gap: 0.7 – 0.8 (0.028 – 0.031)
Generator Three-phase A.C. generator
Generator Max Output 13.5 – 15V 225 W @ 5,000 RPM
Fuse 30 Amp; 10 Amp (Hi/Lo headlight, brake light, ignition, power source, fan)
Battery YTX14-BS 12 V 43.2 kC (12 Ah)/10 HR
Battery Dimensions (L x W x H) 6 x 3.44 x 5.75 in (150 x 87 x 145 mm)
Green 2004 Suzuki Eiger 400 4x4 ATV

Tires & Brakes

Quads released in Australia were equipped with Dunlop tires and those marketed in the U.S., Canada, and Sweden with all-terrain Maxxis rubber. Given the vehicle’s high-radius fenders, it is convenient to replace stock rubber with larger tires like Kenda K538 Executioner (view on Amazon), especially if you plan to use your quad for serious mudding.


Suzuki Eiger 400 LT-A400K/FK Suzuki Eiger 400 LT-F400K/FK
Front Tire, off-road/road air pressure Dunlop KT121HD AT25 x 8-12, tubeless (P-24)
Maxxis M913S AT25 x 8-12, tubeless (Others)
Tire Pressure: 32.5 kPa (0.325 kgf/cm2, 4.7 psi)
Rear Tire, off-road/road air pressure Dunlop KT405HD AT25 x 10-12, tubeless (P-24)
Maxxis M909S AT25 x 10-12, tubeless (Others)
Tire Pressure: 30 kPa (0.30 kgf/cm2, 4.4 psi)
Tire Tread Depth, F/R Limit: 4.0 mm (0.16 in)
Front Brake Type Disc brake, twin
Rear Brake Type Drum brake

Remember to take note of the permissible operating pressure for your tires (whether stock or replacement). Never go beyond 45 kPa (0.46 kgf/cm2, 6.5 psi) for maximum pressure, 70 kPa (0.71 kgf/cm2, 10 psi) when filling them, or 25 kPa (0.25 kgf/cm2, 3.6 psi) when airing them down. Suzuki recommends using a manual-type air pump versus a high-pressure air compressor to reduce possible tire damage caused by over-inflation.

Suspension

Enclosed in the vehicle’s steel frame are independent double-wishbone front suspensions and swingarm-type rear suspension with dual mono-shocks, offering 6.7 inches (170 mm) of wheel travel on all fours. The remarkable ground clearance and 50-inch wheelbase lend to the Eiger’s superb handling regardless of the terrain.


Suzuki Eiger 400 LT-A400K/FK Suzuki Eiger 400 LT-F400K/FK
Caster, Trail 3°, 14 mm (0.55 in)
Toe-in 10 mm (0.39 in)
Steering Angle 47° (right & left)
Turning Radius 3.1 m (10.2 ft)
Front Suspension Type, Travel Independent, double wishbone, coil spring, oil damped, 170 mm (6.7 in)
Rear Suspension Type, Travel Swingarm type, coil spring, oil damped, 170 mm (6.7 in)

Dimensions

Manual transmission Suzuki Eigers sold in the U.S. and Canada tend to be heavier than quads released in Australia and Sweden. Interestingly, the inverse is true for their automatic transmission models. Despite the difference in dry weight, all vehicles have the same load capacity limit.


Suzuki Eiger 400 LT-A400K/FK Suzuki Eiger 400 LT-F400K/FK
Length 2,160 mm (85.0 in) P-17, 24; 2,060 mm (81.1 in) P-28,33
Width 1,200 mm (47.2 in) P-17, 24; 1,145 mm (45.1 in) P-28,33
Height 1,220 mm (48.0 in)
Seat Height (Unloaded) 840 mm (33.1 in)
Ground Clearance 250 mm (9.8 in)
Wheelbase 1,270 mm (50.0 in)
Dry Weight 252 Kg (555 lbs) LT-A400
272 Kg (559 lbs) LT-A400F (P-17)
275 Kg (606 lbs) LT-A400F (P-24)
268 Kg (590 lbs) LT-A400F (P-28,33)
253 Kg (557 lbs) LT-F400 (P-24)
269 Kg (593 lbs) LT-F400F (P-24)
250 Kg (551 lbs) LT-F400 (P-17) 266 Kg (586 lbs) LT-F400F (P-17)
246 Kg (542 lbs) LT-F400 (P-28)
262 Kg (577 lbs) LT-F400F (P-28,33)
Vehicle Load Capacity Limit 172 Kg (380 lbs) 172 Kg (380 lbs)
Green 2007 Suzuki Eiger 400 4x4 ATV

Exterior

The four-wheeler has a steel frame and plastic body material in Advantage Camouflage and various color options. Suzuki Eiger 400 parts such as the handlebar, parking brake, and brake light switches are on the left. The other controls and the output terminal are on the right side of the handlebar. The ignition switch is on the center console, and the front bumper has a tab that perfectly fits a recovery winch. Electrical components (battery and fuse box) are under the driver seat.

Instrumentation Suzuki Eiger 400 LT-A400K/FK Suzuki Eiger 400 LT-F400K/FK
Electronic Speedometer Standard
Indicator Lamps Standard
Trip Odometer & Computer Standard
Emergency Off Switch Standard
Engine Stop Switch Standard
Oil Temperature Switch Standard

Lighting

The 4×4 is complete with all the standard lighting, but only Eiger 400s released in Sweden have reversing and high-beam indicator lights. Still, all models can be made street-legal – refer to your state’s guidelines for the next steps.


Suzuki Eiger 400 LT-A400K/FK Suzuki Eiger 400 LT-F400K/FK
Headlight HS1 – 12V 35W x 2
Brake Light/Taillight 12 V 21/5 W
Speedometer Light 12 V 1.7 W
Indicator Lights 12 V 3.4 W (oil temperature, neutral)
High Beam Indicator Light 12 V 3.4 W (P-17)
Reversing Light 12 V 21 W (P-17)

Watch this video by FiredUpOffRoad as the presenter highlights precisely these attributes and more with an honest review of his 2005 Suzuki Eiger 400 4×4. He also shared his reasons for choosing a manual over an automatic transmission version:

Setbacks and Solutions

2002 Recall

Suzuki has voluntarily recalled about 4,700 units of 2×4 and 4×4 automatic transmission Eiger 400 models due to crankshaft issues. This decision was brought about by a manufacturing flaw in the quad, causing its crankshaft to break during operation and resulting in the vehicle quitting altogether (due to an interruption of power transfer). A revamp in the design of later-year models permanently resolved this problem.

Overcharging Regulator

This issue has come up pretty frequently in forums and seems to be one of the chief consumer complaints about the quad. While the reason is often a defective battery, the electronic accessories we put on our wheeler are also to blame. Abnormal driving conditions may also lead to fluctuations in regulated voltage between the battery terminals.

As a best practice, ensure that aftermarket accessories you buy do not use excessive amounts of electricity. Regularly inspect the state of your machine’s wire harness and test the contact between couplers. One-off instances may still point to a leaking battery. But if you have cooked the acid out of batteries way too many times, the regulator/rectifier is definitely at fault.

This video by Mid Nebraska Motorsports is a great guide on how to tear down the vehicle’s top-end – comes in handy when working on a stator/charging issue:

Starter Motor Problems

Going straight for a CDI box replacement is not the best (nor the most practical) way to address a starting problem, as there is more than one aspect of the wheeler needing thorough inspection. Gear selection and electrical components top the list. For beginner owners, it is crucial to note that starting the engine from any other transfer position apart from neutral is never going to work. A blown fuse, shorted relays, or a low-voltage battery are likely to be problem sources too. I also recommend checking for a defective parking brake switch or starter clutch. If you are lucky, the culprit could simply be worn gaskets or a flawed gear selector.

Starting Difficulty

While the preceding issue leans toward an electrical fault, starting issues are almost always about your four-wheeler’s carburetor and air-fuel mixture. Resolving this problem is both easy and challenging, as the remedy could go from cleaning clogged passages, filters, and fuel lines to replacing your entire top-end. Upkeep of your weekend warrior should not only be based on manufacturer-recommended schedules but also on how often you ride your quad in the outdoors or how long you have it sitting unused in your garage.

These are only some of the known issues the Suzuki Eiger 400 has. If you are looking for a more extensive list of common problems and how to rectify them, Suzuki ATV forums and other similar off-roading sites are great resources.

About Suzuki

Suzuki Motor Corporation is a world-renowned corporation founded in 1909 that traces back its humble beginnings to weaving loom. Decades after, it has ventured into the automotive industry and produced several ground-breaking vehicles – including the Suzuki Eiger 400 4×4. Today, the Japanese company is recognized as one of the most successful automakers by production worldwide – with over 133 distributors in 192 countries and a myriad of product offerings ranging from automobiles and motor vehicles to internal combustion engines.

Conclusion – Suzuki Eiger 400 4×4 Review

Between the automatic and manual transmission models, experienced adventurers strongly recommend the latter. True, both versions boast torque-sensing front differentials, foot-operated brake pedals, selectable driveline modes, and impressive fuel consumption. But going for the manual 4WD trims guarantee fewer engine problems, better maneuverability, and more leeway for project builds. Plus, a straight-axle rear suspension is always good to have on bumpy roads.

The attention it is now enjoying from the off-roading community may be late by a few decades – yes. But it does not make the Suzuki Eiger 400 less of a bulletproof machine. Nor does it make this rare gem less deserving.

Kris Peter

Adventure seeker and off-road enthusiast. I love the thrill of going off-road and taking on the elements.

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