2003 Suzuki JR80 Specifications

Name: 2003 Suzuki JR80
Brand: Suzuki

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2003 Suzuki JR80 Overview

The 2003 Suzuki JR80 is a minibike, cross motorcycle built around 79 cc of displacement. Under the tank sits a Single cylinder engine, a compression ratio of 6.8:1. The bore and stroke measures 49 x 42 mm. From a practical standpoint, the 2003 JR80 tips the scales at 58 kg, carries a 4.10-litre fuel tank, offers a seat height of 685 mm and spans a 1,050 mm wheelbase. Scroll down for the complete 2003 Suzuki JR80 spec sheet covering every technical detail from suspension travel to tyre sizes.

2003 JR80 - Pros & Cons

Strengths

Accessible seat height: At 685 mm, the seat height is approachable for a wide range of rider heights and builds confidence in low-speed manoeuvring.

Considerations

Carburetor fuelling: Carbureted engines need occasional jetting attention and can be reluctant in cold weather or at altitude compared to modern fuel-injected alternatives.

Owner Experiences & Common Issues

Carburetor maintenance

Carburetors on the 2003 Suzuki JR80 benefit from a clean and re-jet if the bike has been stored, run on stale fuel, or modified with an aftermarket exhaust. Owners frequently mention that fresh jets and float needle clips transforms throttle response from flat to crisp.

JR80 - Buying & Maintenance Guide

What to check before buying

When inspecting a used 2003 Suzuki JR80, start with the basics: check the service book for oil change frequency, inspect the chain and sprockets for wear, and look for oil seepage around the engine casings and rocker covers. A cold start test is invaluable - a well-maintained JR80 should fire up cleanly and settle to a smooth idle within a few seconds.

Oil and filter changes

Regular oil changes are the single most important maintenance task on any JR80. Stick to the manufacturer's interval - typically every 6,000 km or once a year, whichever comes first. Always use the correct viscosity grade as specified in the owner's manual.

Carburetor upkeep

Keep the carburetors clean and free of deposits. If the JR80 has been stored, strip and clean the carb float bowls before attempting to start it. Pilot jets are the first to block and the last to be checked - always include them in any carb rebuild.

2003 Suzuki JR80 - Frequently Asked Questions

What engine does the 2003 Suzuki JR80 have?

The 2003 Suzuki JR80 uses a Single cylinder engine with 79 cc of displacement.

How much does the 2003 Suzuki JR80 weigh?

The 2003 Suzuki JR80 weighs 58 kg. This is the manufacturer's dry figure.

What is the fuel tank capacity of the 2003 Suzuki JR80?

The 2003 Suzuki JR80 has a 4.10-litre fuel tank.

Is the 2003 Suzuki JR80 suitable for shorter riders?

The 2003 Suzuki JR80 has a seat height of 685 mm. This is a comfortable, accessible height for most riders.

What brakes does the 2003 Suzuki JR80 have?

The 2003 Suzuki JR80 uses Expanding brake at the front and Expanding brake at the rear.

What tyre sizes does the 2003 Suzuki JR80 use?

The 2003 Suzuki JR80 runs 2.50-14-4pr front and 3.00-12-4pr rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.

What fuel system does the 2003 Suzuki JR80 use?

The 2003 Suzuki JR80 uses Carburettor, providing precise fuelling across the rev range and reliable cold-start behaviour.

Suzuki JR80 Spec Evolution

The Suzuki JR80 was produced across 7 model years (2002-2023). The table below highlights the key specifications that changed across the production run - useful whether you are comparing years or tracking down a specific variant.

Specification	2002	2003	2004	2018	2021	2022	2023
Engine Type	Single cylinder	Single cylinder	Single cylinder	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke
Fuel Capacity	4.10 litres / 1.08 gallons	4.10 litres / 1.08 gallons	4.10 litres / 1.08 gallons	4.10 litres / 1.08 gallons	4.10 litres / 1.08 US gallons	4.10 litres / 1.08 US gallons	4.10 litres / 1.08 US gallons
Displacement (cc)	79.00 cc	79.00 cc	79.00 cc	79.00 cc	79.0 cc	79.0 cc	79.0 cc
Wheelbase	1,050 mm / 41.3 in.	1,050 mm / 41.3 in.	1,050 mm / 41.3 in.	1,050 mm / 41.3 in.	1050 mm / 41.3 in.	1050 mm / 41.3 in.	1050 mm / 41.3 in.
Brakes - Front	Expanding brake	Expanding brake (drum brake)	Expanding brake (drum brake)	Expanding brake (drum brake)	Expanding brake (drum brake)	Expanding brake (drum brake)	Expanding brake (drum brake)
Brakes - Rear	Expanding brake	Expanding brake (drum brake)	Expanding brake (drum brake)	Expanding brake (drum brake)	Expanding brake (drum brake)	Expanding brake (drum brake)	Expanding brake (drum brake)
Suspension - Front	-	-	Telescopic, oil damped	Telescopic, coil spring, oil damped	Telescopic, coil spring, oil damped	Telescopic, coil spring, oil damped	Telescopic, coil spring, oil damped
Suspension - Rear	-	-	Link type, oil damped with five preload settings	Link type, spring preload 5-way adjustable	Link type, spring preload 5-way adjustable	Link type, spring preload 5-way adjustable	Link type, spring preload 5-way adjustable

Key Specifications

Engine

Single cylinder

Power

N/A

Torque

N/A

Top Speed

N/A

Weight

58 kg / 127.9 lbs

Fuel Capacity

4.10 litres / 1.08 gallons

Full 2003 Suzuki JR80 Specifications

Bore x Stroke (in,) 1.9 x 1.7 inches

Bore x Stroke (mm) 49.0 x 42.0 mm

Displacement (cc) 79.00 cc

Displacement (ci) 4.82 cubic inches

Engine Type Single cylinder

Stroke 2

Fuel System Carburettor

Compression Ratio 6.8:1

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