2004Aprilia RX 50

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The 2004 Aprilia RX 50 is a lightweight enduro bike designed for young riders and beginners seeking off-road adventure. Its nimble two-stroke engine and responsive handling make it ideal for trail exploration and casual dirt riding. Known for combining playful performance with manageable power, the RX 50 offers an accessible entry point into off-road motorcycling.

Capacity: 49.7 ccm
Engine: Single, two-stroke
Gearbox: 6-speed
Dry weight: 92.0 kg
Seat height: 890 mm
Power: 5.4 HP (4.0 kW)

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Other years 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail65%

Cornering55%

City riding70%

Daily riding40%

Touring15%

Two-up10%

Track15%

Best for: It's designed as a supermoto-styled commuter and playbike for short urban and suburban trips rather than serious performance riding.
Built for: Nimble, light, and eager-revving, it rewards flicking through traffic and tight corners rather than outright straight-line speed.
Not ideal for: It's not the right choice for highway touring, carrying a passenger comfortably, or riders wanting real power on tap.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 890mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2004 Aprilia RX 50, with a cramped knee angle of around 80 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 821-900 mm — Long Legs →

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Full specifications

Engine

Capacity: 49.7 ccm
Power: 5.4 HP (4.0 kW)
Engine type: Single, two-stroke
Power/weight ratio: 0.0587 HP/kg (dry)
Bore x stroke: 40.3 x 39.0 mm
Compression: 12.0:1
Cooling system: Liquid
Fuel system: Carburettor
Starting: Kick
Ignition: Electronic, capacitor discharge
Lubrication system: Separate mixing with variable displacement pump
Torque: Not on record - add it

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Chain
Clutch: Multiple disk in oil bath

Dimensions & weight

Wheelbase: 1360 mm
Overall length: 2060 mm
Overall width: 810 mm
Overall height: 1330 mm
Seat height: 890 mm
Dry weight: 92.0 kg
Wet weight: 104.0 kg
Fuel capacity: 9.50 litres
Reserve fuel capacity: 1.50 litres
Ground clearance: Not on record - add it

Chassis & suspension

Frame: Closed cradle split at exhaust level, in high strength steel tubes
Front suspension: Upside down telescopic fork
Rear suspension: Swing-arm in box section steel
Front wheel travel: 250 mm
Rear wheel travel: 260 mm

Brakes & wheels

Front brakes: Single disc
Front brakes diameter: 230 mm
Rear brakes: Single disc
Rear brakes diameter: 220 mm
Front tyre: 90/90-21
Rear tyre: 110/80-18

Other

Color options: Aprilia black/lemon yellow, Baltic blue/sky blue, Matt black/hot red

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted

Specification	2002	2004	2007	2012	2017	2022
Capacity	50 cc	50 cc	50 cc	50 cc	50 cc	50 cc
Dry weight	92 kg	92 kg	92 kg	92 kg	92 kg	92 kg
Seat height	890 mm	890 mm	830 mm	830 mm	880 mm	880 mm
Fuel capacity	9.5 L	9.5 L	7 L	7 L	7 L	7 L