Derbi GPR 125

The Derbi GPR 125 is a captivating blend of sporty aesthetics and balanced performance in the 125cc motorbike space. Lauded for its sharp styling reminiscent of higher-end sports bikes, it offers a composed handling experience, making it a joy to ride. Transitioning to a four-stroke engine in 2010, it aligns with modern efficiency standards, making it a worthy consideration for both new and seasoned riders. While its compact size is a boon for urban manoeuvrability, it might fall short for taller riders, mirroring a minor trade-off for its sleek design.

Technical Specs

Dimensions & Weight

Seat Height 810 mm
Wheelbase 1,355 mm
Dry Weight 120 kg


Engine & Performance

Engine Type

Four-stroke, single cylinder

Engine Size/Displacement 124.7 cc
Horsepower and Torque 15 bhp
14 Nm


Transmission & Fuel

Number of Gears 6-speed
Fuel Capacity 13 Litres
Fuel Economy 60.9 mpg


Chassis & Suspension

Frame Type Aluminium Chassis
Front/Rear Suspension 40 mm upside-down fork /
Rear mono-shock suspension
Front/Rear Brake Disc braking system


History and Evolution

The history and evolution of the Derbi GPR 125 reveal a journey of innovation and adaptation to market demands, particularly catering to the needs of younger riders and those with a penchant for sporty, sleek motorcycles.

Early Beginnings

The Derbi GPR 125 was introduced to the market in 2004, with the original models being powered by a single-cylinder two-stroke engine manufactured by Yamaha​​. This period saw the emergence of the GPR 125 as a reputable entry-level sportbike, capturing the attention of youthful riders. Between 2002 and 2004, Derbi updated the GPR with new plastics, 17″ wheels, Sebac forks, and a matching livery to that of their GP race bikes, enhancing its appeal further​​.

Transition to Four-Stroke Engine

A significant transition occurred in 2010 when the GPR 125 was upgraded to a liquid-cooled DOHC four-stroke four-valve engine, marking a departure from the two-stroke engine of earlier models​​. This shift mirrored a broader industry trend towards four-stroke engines, noted for their better fuel efficiency and reduced emissions. The new engine also brought with it changes in bore and stroke dimensions, showcasing Derbi’s commitment to evolving its engine technology​​.

Performance Enhancements

The year 2010 also saw performance enhancements with the GPR 125 sporting a 124cc single-cylinder powerplant paired to a six-speed manual transmission, capable of producing a claimed 15 horsepower and 14 Nm of torque​​. The design continued to evolve, with the 2012 model, for example, featuring a compact 125 cc 4-stroke 4-valve Euro3 single-cylinder engine with double overhead camshafts​​.

Model Expansion

Following the success of the GPR50, Derbi expanded its model lineup in 2005 with two new 125cc models, the GPR125 Racing and GPR125 Nude, reflecting a strategic move to capitalize on the growing popularity of the 125cc category​.

Aesthetic Appeal

Throughout its production years, the GPR 125 was often praised for its beautiful styling, which at times could have it mistaken for a baby Ducati or MV Agusta motorcycle, especially between 2005 and 2009​.

Performance and Handling

The Derbi GPR 125 has garnered praise for its outstanding performance and handling characteristics which are largely attributed to its engine evolution and chassis design. Initially powered by a two-stroke engine, the Derbi GPR 125 transitioned to a more efficient four-stroke engine in 2010, which is capable of delivering a maximum power of 15 horsepower at 9,250 rpm​​. This transition not only enhanced its fuel efficiency but also its environmental friendliness.

Specification Two-Stroke Model (Pre-2010) Four-Stroke Model (2010 onwards)
Maximum Power 33 bhp 15 bhp
Engine Type Two-Stroke Four-Stroke
Handling Characteristics Precise, road-racing like Composed, fun to ride

The handling of the Derbi GPR 125 is often celebrated for its precision, mirroring the handling of road-racing motorcycles. This precision is largely attributed to its twin-beam setup which enhances stability and control on the road​​. Riders have also found the Derbi GPR 125 to be a fun and composed ride, with its sharp styling adding to the overall enjoyable experience​.

In terms of design, the compact dimensions of the Derbi GPR 125, especially notable in the 2013 model with a length of 1,977 mm and width of 795 mm, contribute to its agility and ease of handling in urban settings​​.

Additionally, the Derbi GPR 125’s performance, handling, and sleek design make it a strong contender in the 125cc motorcycle category. Its well-rounded attributes provide a delightful riding experience, making it a solid choice for riders exploring the 125cc segment.

Maintenance and Reliability


  • Routine Checkups:
    • Regular maintenance is crucial for ensuring the long-term performance and reliability of the Derbi GPR 125. Owners are advised to adhere to the periodical maintenance schedule, which includes inspection and maintenance of various components such as lubrication points, seats, fairing, and the fuel tank.
  • Use of Genuine Parts:
    • Utilising genuine Derbi spare parts and recommended lubricants is advisable for maintenance tasks. During any re-assembly, it’s recommended to use new oil seals, gaskets, piston rings, and grommets to ensure the longevity and reliability of the motorcycle.
  • Detailed Maintenance Guidelines:
    • Service manuals provide a wealth of information on general technical data, tightening torques, and specifications for the electrical system, which are vital for proper maintenance. They also provide guidelines on troubleshooting and detailed instructions on how to service and repair various components of the motorcycle.


  • Rider and Expert Ratings:
    • The reliability ratings from various riders and experts indicate a good level of reliability for the Derbi GPR 125. Repair and maintenance costs are also rated relatively positively, showcasing a perception of affordability in upkeep.
  • Performance in Tests:
    • In some tests, the Derbi GPR 125 demonstrated a strong performance, handling extensive usage without significant issues, although some minor aesthetic or functional concerns were noted.
  • Yearly Model Ratings:
    • Various models of the Derbi GPR 125 over different years have received decent reliability ratings, indicating a continued level of trust in the model’s reliability among the rider community.

In conclusion, the Derbi GPR 125 seems to offer a good balance of maintenance-friendly features and reliable performance. Adherence to the recommended maintenance schedule and the use of genuine parts for any repairs or replacements are crucial factors in ensuring the bike remains reliable over time.

Reviews and Testimonials

The Derbi GPR 125 is a sporty, sleek motorcycle that appeals to riders looking for an attractive, performance-oriented bike in the 125cc category. Its transition from a two-stroke to a four-stroke engine in 2010 marked a significant evolution, aligning with industry trends towards better fuel efficiency and lower emissions. The bike’s aesthetics, particularly its sharp styling, have been a major selling point, often earning praise for its resemblance to higher-end sports bikes. Its compact size makes it a good choice for riders who prioritize maneuverability and ease of handling, particularly in urban settings.


  1. Stylish Design: The GPR 125 is often lauded for its sporty and attractive design, which stands out in the 125cc category.
  2. Good Performance: The bike’s four-stroke engine provides a balanced performance, making it a suitable choice for both new and seasoned riders.
  3. Composed Handling: Riders appreciate the bike’s composed handling, which lends a sense of control and fun to the riding experience.
  4. Affordable Maintenance: The perceived affordability of maintenance and the availability of genuine parts make it a cost-effective choice for many.
  5. Positive Rider Feedback: Many riders have expressed satisfaction with their purchase, often recommending it over other 125cc bikes.


  1. Size: The compact size, while beneficial for maneuverability, might not be comfortable for all riders, particularly taller individuals.
  2. Finish Quality: Some reviews pointed out concerns with the finish quality, which might not meet everyone’s expectations.
  3. Matte Plastics: The use of matte plastics in some models was not to everyone’s taste and might not appeal to riders who prefer a gloss finish.