MotoSpecs

2005 Yamaha YZ250 Specifications

Cross / motocross • Specs last verified 13 July 2026

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2005 Yamaha YZ250 Overview

Yamaha YZ250 is a cross / motocross motorcycle, displacing 249 cc. Power comes from a Single cylinder engine, a compression ratio of 9.1:1. Bore and stroke come in at 66.4 x 72 mm. On the road, the 2005 YZ250 carries a 7.94-litre fuel tank and offers a seat height of 991 mm. The full 2005 Yamaha YZ250 spec sheet below covers every technical detail, from suspension travel to tyre sizes.

2005 YZ250 - Pros & Cons

Strengths

  • Factory engineering: Yamaha built the YZ250 around a straightforward, purposeful specification rather than chasing any single standout feature.

Considerations

  • Carburetor fuelling: Expect to spend more time keeping the carbs in tune, especially after long storage periods or a change in altitude.
  • Tall seat height: At 991 mm, shorter riders will likely be on tiptoes at a standstill - worth sitting on one before you buy.
  • Modest fuel capacity: Range between stops is limited by the 7.94-litre tank - plan fuel stops accordingly on longer routes.
  • Chain final drive upkeep: Budget time for routine chain maintenance - it's cheap to replace but needs consistent attention to avoid premature sprocket wear.

Wear Points & Servicing Notes

Carburetor maintenance

Carburetors on the YZ250 need periodic attention - pilot jets and float needles are the first parts to gum up after the bike sits, and the first thing to check if idle or throttle response degrades.

Brake disc and pad wear

Braking up front comes from Single disc - solid stopping power, with disc and pad wear best checked on the same schedule as tyre changes.

Suspension condition on used examples

The YZ250's suspension runs 48mm Kayaba inverted cartridge fork w/adjustable compression and rebound damping at the front. The rear uses Kayaba single shock w/adjustable preload, compression and rebound damping separate hi/lo-speed compression adjusters. Fork-seal condition and rear linkage play are the two things worth checking before buying used.

Final drive maintenance

The YZ250 uses chain final drive, which is cheap to replace but needs regular cleaning, lubrication and tension checks to get a full service life out of the sprockets.

YZ250 - Buying & Maintenance Guide

What to check before buying

Before handing over money for a used 2005 Yamaha YZ250, cover the fundamentals: service book and oil change history, chain and sprocket wear, and any sign of oil weeping around the casings. Cold-starting it yourself tells you a lot - a healthy YZ250 should catch quickly and settle into a smooth idle.

Oil and filter changes

Nothing protects a YZ250's engine like disciplined oil changes - stay on the manufacturer's schedule (roughly every 6,000 km or annually). Match the viscosity grade to what the owner's manual specifies, not what's cheapest.

Carburetor upkeep

Deposits in the carbs are the usual culprit behind poor running on a stored YZ250 - strip and clean the float bowls before the first start. Pilot jets clog first and get overlooked most, so make a point of checking them.

2005 Yamaha YZ250 - Frequently Asked Questions

What engine does the 2005 Yamaha YZ250 have?
The 2005 Yamaha YZ250 uses a Single cylinder engine with 249 cc of displacement.
How much does the 2005 Yamaha YZ250 weigh?
The 2005 Yamaha YZ250 weight is listed in the full spec table below.
What is the fuel tank capacity of the 2005 Yamaha YZ250?
The 2005 Yamaha YZ250 has a 7.94-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 132-158 km between stops.
Is the 2005 Yamaha YZ250 suitable for shorter riders?
The 2005 Yamaha YZ250 has a seat height of 991 mm. This is towards the tall end of the spectrum and will require most riders under 175 cm to tiptoe at stops.
What brakes does the 2005 Yamaha YZ250 have?
The 2005 Yamaha YZ250 uses Single disc at the front and Single disc at the rear.
What tyre sizes does the 2005 Yamaha YZ250 use?
The 2005 Yamaha YZ250 runs 80/80-21 front and 110/90-19 rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.
What fuel system does the 2005 Yamaha YZ250 use?
The 2005 Yamaha YZ250 uses Carburettor, providing precise fuelling across the rev range and reliable cold-start behaviour.

Yamaha YZ250 Spec Evolution

The Yamaha YZ250 was produced across 21 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 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Wet Weight - - - - - - 103.9 kg / 229.0 lbs 103.9 kg / 229.0 lbs 103.0 kg / 227.0 lbs 103.0 kg / 227.0 lbs 103.0 kg / 227.0 lbs 103.0 kg / 227.0 lbs 103.0 kg / 227.0 lbs 103.0 kg / 227.1 lbs 103.0 kg / 227.1 lbs 103.0 kg / 227.0 lbs 103.0 kg / 227.0 lbs 103.0 kg / 227.0 lbs 103.0 kg / 227.0 lbs 103.0 kg / 227.0 lbs 103.0 kg / 227.0 lbs
Dry Weight 97.5 kg / 215.0 lbs 97 kg / 213.8 lbs - 96 kg / 211.6 lbs 96 kg / 211.6 lbs 96.2 kg / 212.0 lbs - - - - 210.5 kg / 464.1 lbs 59 kg / 130.1 lbs - - - - - - - - -
Engine Type Single cylinder Single cylinder Single cylinder V2 Single cylinder Single cylinder Single cylinder Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, four-stroke Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke Single cylinder, two-stroke
Seat Height - 990 mm / 39.0 in. 991 mm / 39.0 in. 997 mm / 39.3 in. 993 mm / 39.1 in. 993 mm / 39.1 in. 993 mm / 39.1 in. 993 mm / 39.1 in. 993 mm / 39.1 in. 993 mm / 39.1 in. 993 mm / 39.1 in. 993 mm / 39.1 in. 993 mm / 39.1 in. 976 mm / 38.4 in. 976 mm / 38.4 in. 976 mm / 38.4 in. 976 mm / 38.4 in. 976 mm / 38.4 in. 970 mm / 38.2 in. 970 mm / 38.2 in. 975 mm / 38.4 in.
Fuel Capacity - - 7.94 litres / 2.10 gallons 8.00 litres / 2.11 gallons 7.94 litres / 2.10 gallons 7.94 litres / 2.10 gallons 7.94 litres / 2.10 gallons 7.94 litres / 2.10 gallons 7.95 litres / 2.10 gallons 7.95 litres / 2.10 gallons 7.95 litres / 2.10 gallons 7.95 litres / 2.10 gallons 7.95 litres / 2.10 gallons 8.00 litres / 2.11 gallons 8.00 litres / 2.11 gallons 8.00 litres / 2.11 gallons 8.00 litres / 2.11 US gallons 8.00 litres / 2.11 US gallons 8.00 litres / 2.11 US gallons 8.00 litres / 2.11 US gallons 8.00 litres / 2.11 US gallons
Oil Capacity (Quarts) - - - - - - - - - - - - - 0.05 quarts 0.05 quarts 0.05 quarts 0.85 US quarts 0.85 US quarts 0.85 US quarts 0.85 US quarts 0.85 US quarts
Ground Clearance (mm) 391 mm 391 mm 396 mm 385 mm 381 mm 381 mm 381 mm 381 mm 381 mm 381 mm 381 mm 381 mm 381 mm 367 mm 367 mm 367 mm 361 mm 361 mm 361 mm 361 mm 361 mm
Ground Clearance (in.) 15.4 inches 15.4 inches 15.6 inches 15.2 inches 15.0 inches 15.0 inches 15.0 inches 15.0 inches 15.0 inches 15.0 inches 15.0 inches 15.0 inches 15.0 inches 14.4 inches 14.4 inches 14.4 inches 14.2 inches 14.2 inches 14.2 inches 14.2 inches 14.2 inches

Key Specifications

Engine

Single cylinder

Power

Not published by manufacturer

Torque

Not published by manufacturer

Top Speed

Not published by manufacturer

Weight

Not published by manufacturer

Fuel Capacity

7.94 litres / 2.10 gallons

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Full 2005 Yamaha YZ250 Specifications

Colours Team Yamaha Blue/White
Ground Clearance (in.) 15.6 inches
Ground Clearance (mm) 396 mm
Wheelbase (in.) 2.3 inches
Seat Height 991 mm / 39.0 in.
Height 1,308 mm / 51.5 in.
Length 2,182 mm / 85.9 in.
Width 828 mm / 32.6 in.
Fuel Capacity 7.94 litres / 2.10 gallons
Bore x Stroke (in,) 2.6 x 2.8 inches
Bore x Stroke (mm) 66.4 x 72.0 mm
Displacement (cc) 249.00 cc
Displacement (ci) 15.19 cubic inches
Engine Type Single cylinder
Stroke 2
Fuel System Carburettor
Compression Ratio 9.1:1
Valve System 1
Final Drive Chain
Gearbox 5-speed
Suspension - Front 48mm Kayaba inverted cartridge fork w/adjustable compression and rebound damping
Suspension - Rear Kayaba single shock w/adjustable preload, compression and rebound damping separate hi/lo-speed compression adjusters
Wheel Travel - Front 300 mm / 11.8 in.
Wheel Travel - Rear 315 mm / 12.4 in.
Brakes - Front Diameter (in.) 9.8 inches
Brakes - Front Diameter (mm) 250 mm
Brakes - Rear Diameter (in.) 9.6 inches
Brakes - Rear Diameter (mm) 245 mm
Brakes - Front Single disc
Brakes - Rear Single disc
Tyres - Front 80/80-21
Tyres - Rear 110/90-19

Specifications are compiled from manufacturer documentation and cross-referenced technical sources, and corrected on an ongoing basis. Spot an error? Let us know.

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