Triumph 500 Grand Prix Specs (Top Speed | Horsepower | Weight)

The Triumph 500 Grand Prix motorcycle specifications include a 498 cc (30.39 cu in) engine, power of 40 hp (29.2 kW) @ 7,200 rpm, and a listed weight of 142 kg (313.1 lb).

Key specifications

1947-1950Model years
498 ccDisplacement
40 hpPower
142 kgDry weight
Model years covered
1947194819491950

Year-specific specification changes

No material specification changes from the 1947 baseline were found in the available data.

How the Triumph 500 Grand Prix compares

This compares the motorcycle with all Triumph models in this specifications database. The blue marker is this model and the grey line is the Triumph database average.

Engine power40 hp
Low 10 hpAverage 87.2 hpHigh 165 hp

About 54% lower than the Triumph database average. Around the 10th percentile across Triumph models.

Displacement498 cc
Low 199 ccAverage 949 ccHigh 2,294 cc

About 48% lower than the Triumph database average. Around the 13th percentile across Triumph models.

This model Triumph database average

Triumph database percentile rankings

Percentiles show where this motorcycle sits across the Triumph specifications database. They are descriptive database rankings, not performance ratings.

Engine power10th

40 hp — more powerful than about 10% of Triumph models with power data.

Displacement13th

498 cc — larger displacement than about 13% of Triumph models.

Mechanical overview

Engine layout snapshot

Twin, four-stroke • 498 cc • Air cooled • 40 hp
Chassis snapshot

Chain (final drive)

Additional useful specifications

Power-to-weight ratio 0.282 hp/kg
Power-to-weight 281.7 hp/tonne
Specific power 80.3 hp/L
Bore/stroke ratio 0.79:1 (Undersquare)

Engine specifications

Engine type Twin, four-stroke
Displacement 498 cc (30.39 cu in)
Power 40 hp (29.2 kW) @ 7,200 rpm
Bore × stroke 63.0 x 80 mm (2.5 x 3.1 inches)
Cooling system Air
Fuel control Overhead Valves (OHV)

Transmission and drivetrain

Final drive Chain (final drive)

Brakes, wheels and tires

Front brakes Expanding brake (drum brake)
Rear brakes Expanding brake (drum brake)
Wheels Spoked

Dimensions and weight

Dry weight 142 kg (313.1 lb)

Performance

Power/weight ratio 0.2817 hp/kg

Other specifications

Seat Single

Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from Triumph models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Triumph information before relying on them. Visit the official Triumph website.