Peugeot Speedfight 4 50 2T LC - Technical Specifications

The Peugeot Speedfight is a true classic when it comes to sporty 50cc scooters in Europe. Since the late 90s, the Speedfight has been characterised by its very distinctive look, a carefully designed chassis and agile handling in city traffic. Part of the Speedfight family is the Peugeot Speedfight 4 50 2T LC - a liquid-cooled two-stroke version for those seeking maximum performance within the 50cc class.

Produced between 2015 and 2019, the Speedfight 4 50 2T LC shares the frame and a large part of the fairing with the 4T AC versions, but relies on a liquid-cooled 2-stroke engine with a front radiator, as well as disc brakes on both axles and an upside-down fork with a larger diameter.

Technical Features Peugeot Speedfight 4 50 2T LC

Engine

• Type: 2-stroke single cylinder
• Cooling: Liquid-cooled
• Displacement: 49.9 cc
• Maximum power: 4 kW (≈ 5.4 hp) at 7,000 rpm
• Intake system: Reed valve
• Carburettor: Dellorto
• Starter: Electric starter and kickstarter
• Ignition: CDI
• Transmission: Variator with V-belt
• Spark plug: NGK CR7EB
• Recommended fuel: Unleaded 95 octane petrol

Maintenance of the 2T LC engine: Compared to 4-stroke engines, 2-stroke engines require more frequent inspection of components such as piston, piston rings and exhaust, especially on tuned vehicles. It is important to adhere to the recommended mixture, monitor the condition of the oil pump or mixing system and follow the maintenance intervals specified in the official user manual. Spark plug changes should be carried out according to specifications and with the tightening torque specified by the manufacturer.

Chassis

• Frame: Tubular steel frame scooter design
• Front suspension: Upside-down telescopic fork Ø 32 mm
• Rear suspension: Hydraulic mono shock absorber
• Front brake: 215mm brake disc
• Rear brake: 190mm brake disc
• Rims: 13" alloy wheels
• Front tire: 130/60-13
• Rear tire: 130/60-13
• Seat height: 800 mm
• Stated dry weight: 100 kg
• Fuel tank: 8 litres

Chassis maintenance: In addition to the usual wear and tear of tires, brake pads and brake discs, a regular check of the upside-down fork (oil seals, dust caps and oil condition) as well as the cooling system (coolant level, hoses, water pump and radiator) is recommended. The tightening torques for the frame, wheels and steering should be maintained according to the instructions in the Speedfight 4 2T LC user manual.

2T LC vs 4T AC: Advantages and Disadvantages

Within the Speedfight 4 range, the 50 2T LC and 50 4T AC versions cover different needs:

• Performance and riding feel: The liquid-cooled 2T engine is more powerful and offers higher peak performance than the air-cooled 4T. This ensures better acceleration and pull, which is particularly appreciated for sporty use and tuned setups.
• Tuning and modifications: 2T engines are generally better suited for tuning. There is a wide selection of cylinders, exhausts and performance components specifically for the Speedfight 4 2T LC to increase performance for permitted use and/or for the race track.
• Maintenance: In exchange for the higher performance, the 2T LC requires more maintenance: regular inspection of the cylinder and piston, monitoring of lubrication, cleaning of the exhaust and a higher sensitivity to the quality of oil and fuel. The air-cooled 4T, on the other hand, usually offers longer maintenance intervals and quieter operation in everyday use.
• Consumption and everyday use: The 4T AC is more economical and generally quieter and smoother, making it more suitable for daily city trips and for users who prioritise cost per kilometre and simplicity. The 2T LC sacrifices these advantages in favour of performance.
• Cooling: The liquid cooling of the 2T LC version offers better temperature management during intensive use or in warm climates, keeping the engine in a more stable temperature range than the air-cooled 4T versions.

In summary, the Peugeot Speedfight 4 50 2T LC is the more interesting option for those looking for a sporty 50cc scooter with better performance out of the box and greater potential for tuning projects, while the Speedfight 4 50 4T AC is aimed more at sensible, economical use and is easier to maintain.

Peugeot Speedfight 4 50 2T LC in our online shop

In our online shop, there is a large selection of spare parts and accessories specifically for the Peugeot Speedfight 4 50 2T LC: from consumables for maintenance (2T oils, spark plugs, V-belts, CVT weights, brake pads and brake discs, tyres, batteries, etc.) to engine components (cylinders, pistons, gaskets, reed valve blocks, carburetors, exhausts) and chassis (shock absorbers, forks, discs, brake calipers, radiators and coolant hoses).

Furthermore, there are fairing parts, handlebars, grips, levers, dress up screws and other visual and functional parts to keep the Speedfight 4 2T LC in perfect condition and to adapt the look to every rider's taste.