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Diamo RS 250
1999Sportbike

Diamo RS 250

Key specifications

Engine
249 cc
Power
55 HP
Torque
35 Nm
Fuel type
petrol
Fuel capacity
5.2 L
Transmission
6-speed
Seat height
32 mm
Front brakes
Dual disc
Rear brakes
Single disc

Overview

Introducing the 1999 Diamo RS 250, a compact powerhouse that carved out a niche in the sport motorcycle category during its production run. With a sleek, aggressive design and an unmistakable presence on the road, the RS 250 was aimed at riders looking for a lightweight yet potent machine. Diamo, a name known for its innovative approach to motorcycling, positioned the RS 250 as an ideal entry point for enthusiasts seeking a blend of performance and agility without breaking the bank. At the heart of the Diamo RS 250 lies a 249cc V2 two-stroke engine that churns out a remarkable 55 horsepower at 11,000 RPM. This high-revving engine is coupled with a 6-speed gearbox that ensures a thrilling ride, allowing the bike to reach a top speed of 203 km/h (126.1 mph). The torque delivery is equally impressive, peaking at 35 Nm at 10,700 RPM, which provides exhilarating acceleration and responsiveness. With a compression ratio of 12.0:1 and a liquid cooling system, the engine is designed to maintain performance even during spirited rides. Fuel efficiency is an attractive feature, boasting an incredible 151.5 km/l, making the RS 250 a cost-effective choice for both daily commutes and weekend adventures. The Diamo RS 250 is not just about raw power; it also showcases thoughtful engineering in its chassis and suspension design. The motorcycle features dual disc brakes at the front with a generous 298 mm diameter for superior stopping power, while the rear single disc measures 220 mm. This braking setup provides confidence-inspiring performance for cornering and emergency stops. The suspension offers a balanced ride with 120 mm of front travel and 130 mm at the rear, allowing for nimble handling and stability on various terrains. The 19.5-litre fuel tank ensures that riders can enjoy long rides without frequent stops, and with a seat height of 820 mm, it caters to a wide range of riders, ensuring comfort and accessibility. **

Pros

  • Impressive Performance: The 55 HP engine delivers exhilarating acceleration and high top speeds, making it perfect for sport riding.
  • Exceptional Fuel Economy: With a fuel consumption of just 0.66 litres/100 km, the RS 250 is highly economical, keeping running costs low.
  • Lightweight and Agile Handling: Weighing in at 168 kg, the bike offers nimble handling and easy maneuverability, ideal for both new and experienced riders.

Cons

  • Limited Storage Options: The sportbike design may lack practicality for riders looking for storage solutions for daily use.
  • Two-Stroke Maintenance: The two-stroke engine may require more frequent maintenance and attention compared to four-stroke counterparts.
  • Kick Starter Only: The absence of an electric starter might be seen as outdated by some riders, especially in today’s market where convenience is key.

Technical details

Source specification data

Make
Aprilia
Model
RS 250
Category
Sport
Starter
Kick
Power
55.00 HP (40.1 kW)) @ 11000 RPM
Torque
35.00 Nm (3.6 kgf-m or 25.8 ft.lbs) @ 10700 RPM
Gearbox
6-speed
Top Speed
203.0 km/h (126.1 mph)
Bore X Stroke
56.0 x 50.6 mm (2.2 x 2.0 inches)
Compression
12.0:1
Displacement
249.00 ccm (15.19 cubic inches)
Cooling System
Liquid
Engine Details
V2, two-stroke
Fuel Consumption
0.66 litres/100 km (151.5 km/l or 356.40 mpg)
Greenhouse Gases
O2
g/km. (
O2
-
Carbon
dioxide emission)
Zero To One Hundred
4.300 seconds
Sixty To One Hundred And Forty
33.000 seconds
Transmission Type Final Drive
Chain
Seat Height
820 mm (32.3 inches) If adjustable, lowest setting.
Fuel Capacity
19.50 litres (5.15 gallons)
Weight Incl Oil Gas Etc
168.0 kg (370.4 pounds)
Front Percentage Of Weight
50.6
Rear Tyre
150/60-ZR17
Front Tyre
120/60-ZR17
Rear Brakes
Single disc
Front Brakes
Dual disc
Rear Wheel Travel
130 mm (5.1 inches)
Front Wheel Travel
120 mm (4.7 inches)
Rear Brakes Diameter
220 mm (8.7 inches)
Front Brakes Diameter
298 mm (11.7 inches)