DERBI GPR50 Nude (2004 - 2009) Review


  • Naked 50cc learner bike
  • Ultra-low running costs
  • Great chassis, two-stroke engine

At a glance

Owners' reliability rating: 5 out of 5 (5/5)
Power: 9 bhp
Seat height: Low (29.9 in / 760 mm)
Weight: Low (265 lbs / 120 kg)

Overall rating

Next up: Ride & brakes
4 out of 5 (4/5)

The Derbi GPR 50 Nude was the naked version of the firm's sexy GPR 50 race replica, officially brought into the UK from 2004-2009. The Spanish firm are part of the massive Piaggio group, which includes Piaggio, Vespa, Aprilia, Gilera and Derbi.

It’s the 49cc two-stoke, moped answer to one of the big super naked hitters like the Super Duke, Streetfighter, Speed Triple…except it only does 30mph. A funky little moped for lucky 16-year olds.

Ride quality & brakes

Next up: Engine
5 out of 5 (5/5)

Later models had a chunky steel beam frame, braced swingarm, wide tyres, single shock and upside forks, so the GRP 50 Nude’s chassis was more than a match for its engine. Fit sticky tyres and you’ll never have to back off for a corner.

If you ever do need to brake, there’s a big 300mm single disc and twin-piston radial caliper up front for stoppies on demand. Ride quality is ok, but not really relevant on a tiny 50cc machine like this.


Next up: Reliability
5 out of 5 (5/5)

The GRP 50 Nude is powered by an electric start, single-cylinder, liquid-cooled 49.9cc two-stroke engine, restricted to 30mph, with a six-speed gearbox. The motor is fed by a single 17.5mm carburettor.    

Reliability & build quality

Next up: Value
5 out of 5 (5/5)

This is a very well put together motorcycle and left in standard condition the little two-stroke engine will run on forever. Reliability issues can arise when used and abused by first-time riders.

Our Derbi GPR 50 Nude owners' reviews show very positive results. There are no comments about reliability issues at this point. 

Value vs rivals

Next up: Equipment
3 out of 5 (3/5)

This is a moped for the lucky few. Depending on age, you were looking around £2000 for a well looked after machine, which is a lot for a bike you’ll probably only keep for a year until you’re able to ride a 125cc. 


5 out of 5 (5/5)

For a moped, the Derbi is very well equipped with proper big bike brakes, wheels, suspension, styling and an underseat pipe. 


Engine size 49cc
Engine type Single-cylinder two-stroke
Frame type Twin spar aluminium
Fuel capacity 13 litres
Seat height 760mm
Bike weight 120kg
Front suspension Non-adjustable
Rear suspension Preload adjustable
Front brake 300mm disc
Rear brake 180mm disc
Front tyre size 130/70 17 in
Rear tyre size 100/80 17 in

Mpg, costs & insurance

Average fuel consumption 68 mpg
Annual road tax £25
Annual service cost -
New price -
Used price -
Insurance group 2 of 17
How much to insure?
Warranty term One year unlimited mileage

Top speed & performance

Max power 9 bhp
Max torque 4.4 ft-lb
Top speed 30 mph
1/4 mile acceleration -
Tank range 231 miles

Model history & versions

Model history

Model imported into the UK from 2004-2009

Other versions

Derbi GPR 50 (fully-faired)

Owners' reviews for the DERBI GPR50 (2004 - 2009)

1 owner has reviewed their DERBI GPR50 (2004 - 2009) and rated it in a number of areas. Read what they have to say and what they like and dislike about the bike below.

Review your DERBI GPR50 (2004 - 2009)

Summary of owners' reviews

Overall rating: 5 out of 5 (5/5)
Ride quality & brakes: 5 out of 5 (5/5)
Engine: 5 out of 5 (5/5)
Reliability & build quality: 5 out of 5 (5/5)
Value vs rivals: 3 out of 5 (3/5)
Equipment: 5 out of 5 (5/5)
5 out of 5
30 October 2017 by Tijn

Year: 2009

naked version of Derbi’s sexy GPR 50 race replica

Ride quality & brakes 5 out of 5
Engine 5 out of 5
Reliability & build quality 5 out of 5
Value vs rivals 3 out of 5
Equipment 5 out of 5

naked version of Derbi’s sexy GPR 50 race replica

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