Suzuki RM 125 - 2005 Specifications and Reviews

The 2005 Suzuki RM 125 is a competitive motocross machine designed for intermediate to advanced riders seeking aggressive performance in off-road racing. Powered by a liquid-cooled two-stroke engine with fully adjustable suspension on both ends, it delivers responsive handling and precise control. The RM 125 is best known for its reliability and balanced power delivery in the 125cc motocross class.

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General information

CategoryCross / motocross
Year2005
ModelSuzuki RM 125

Engine and Transmission Specifications

Transmission type,final driveChain
Gearbox6-speed
Cooling systemLiquid
Fuel systemCarburettor
Bore x stroke54.0 x 54.5 mm (2.1 x 2.1 inches)
Compression8.7:1
Engine typeSingle cylinder, two-stroke
Capacity:124.00 ccm (7.57 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakesSingle disc
Front brakesSingle disc
Rear tyre dimensions110/90-M19
Front tyre dimensions80/90-M21
Rear suspensionLink-type, spring preload fully-adjustable, 4 high-speed, 16 low-speed compression settings, 19 rebound settings, 12.6 inches (320mm) of wheel travel
Front suspensionTelescopic, 22 compression and 20 rebound settings, 12.2 inches (310mm) of wheel travel

Physical measures and capacities

Fuel capacity8.00 litres (2.11 gallons)
Wheelbase1,450 mm (57.1 inches)
Ground clearance350 mm (13.8 inches)
Overall width840 mm (33.1 inches)
Overall length2,145 mm (84.4 inches)
Overall height1,275 mm (50.2 inches)
Seat height950 mm (37.4 inches) If adjustable, lowest setting.
Dry weight87.0 kg (191.8 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsYellow

Performance Profile & Rider Fit

Best For

Track85%
City5%
Cornering90%
Daily Riding5%
Touring5%
Passenger0%

Rider Profile

Best ForThis is a pure competition motocross bike best suited to experienced or intermediate off-road riders comfortable with a peaky two-stroke powerband.
PurposeBuilt exclusively for motocross track riding and racing, not for street or general recreational use.
Rider FitIts tall 950mm seat height, lightweight 87kg chassis, and aggressive ergonomics demand good rider fitness, strength, and off-road skill to manage standing and cornering loads.
CharacterA raw, high-revving two-stroke racer that rewards aggressive riding, precise clutch and throttle control, and active body positioning on the track.
Not Ideal ForThis is not suitable for commuting, touring, passengers, or casual road riders since it is unregistered, uncomfortable at low speed, and lacks lights or road equipment.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2005 Suzuki RM 125 Rider Ergonomics Assessment

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Feet:

At 950mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2005 Suzuki RM 125, with a cramped knee angle of around 85 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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