SYM Jet4 50R Naked: review, history, specs

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SYM Jet4 50R Naked
Manufacturer
SYM
Production 2014
Class Scooter
Engine
Single cylinder, 4-stroke, SOHC
Compression ratio 12.2:1
Top Speed 60 km/h / 37 mph
Horsepower 2.01 HP (1.5 KW) @ 8500RPM
Torque 2.21 ft/lbs (3.0 Nm) @ 6500RPM
Fuel System Carburetor (CV)
Ignition CDI
Spark Plug A7RC
Battery 12V 6 Ah
Transmission CVT
Final Drive Belt
Frame Steel, monocuna split steel tube
Suspension Front: Telescopic fork
Rear: Twin sided swing arm
Brakes Front: Hydraulic disc, 226 mm
Rear: Drum, 110 mm
Front Tire 120/60-13 tubeless
Rear Tire 130/70-12 tubeless
Wheelbase 1320 mm / 52.0 in.
Seat Height 775 mm / 30.5 in.
Weight 98 kg / 216 lbs (dry), 109 kg / 240 lbs (wet)
Fuel Capacity 5.2 L / 1.4 US gal
Manuals Service Manual

The SYM JET4 50R NAKED was a Single cylinder, 4-stroke, Air-cooled scooter produced by SYM in 2015. Max torque was 2.21 ft/lbs (3.0 Nm) @ 6500 RPM. Claimed horsepower was 2.01 HP (1.5 KW) @ 8500 RPM. It could reach a top speed of 60 km/h / 37 mph.

Engine[edit | edit source]

The engine was a Air cooled cooled Single cylinder, 4-stroke, SOHC. The engine featured a 12.2:1 compression ratio.

Drive[edit | edit source]

Power was moderated via the Centrifugal.

Chassis[edit | edit source]

It came with a 120/60-13 tubeless front tire and a 130/70-12 tubeless rear tire. Stopping was achieved via Hydraulic disc, 226 mm in the front and a Drum, 110 mm in the rear. The front suspension was a Telescopic fork while the rear was equipped with a Twin sided swing arm. The Jet4 50R Naked was fitted with a 5.2 L / 1.4 US gal fuel tank. The bike weighed just 98 kg / 216 lbs. The wheelbase was 1320 mm / 52.0 in. long.

2015 SYM JET4 50R NAKED[edit | edit source]

In 2014 SYM launches 50R version of Jet 4, a scooter with air-cooled engine which has the same qualities of his older brother valve engine, but with lower weight: 98 kgs. The new scooter is with sporty appearance and with special body design. Jet 4 undoubtedly provides a popular form of sporty spirit.

Photos[edit | edit source]

Overview[edit | edit source]

Designed for a younger, sportier look, SYM launches R 50cc version of Jet 4, a scooter with air-cooled engine which has the same qualities of his older brother valve engine, but with lower weight: 98 kgs.

Combined with practical details such as flatbed, lockable glover bos, the front brake disc with large profile, more space under the seat and rear grill racks with integrated handles, make the Jet 4 50cc R scooter 100 % urban - also thanks to its wheels 13" front and 12″ rear, and suspension that provides an optimal combination of stability, agility and comfort.




Make Model SYM Jet4 50R Naked
Year 2014
Engine Type Single cylinder, 4-stroke, SOHC
Displacement 49.5 cc / 3.0 cub in.
Bore X Stroke 39 mm / 41.4 mm
Cooling System Air cooled
Compression 12.2:1
Engine Oil Capacity 0.85 L / 1.8 US pints
Transmission Oil Capacity 0.11 L / 0.23 US pints
Lubrication Dry sump
Exhaust Single
Fuel System Carburetor (CV)
Induction Electronic
Ignition CDI
Spark Plug A7RC
Battery 12V 6 Ah
Starting Electric & kick
Max Power 2.35 kW / 3.2 hp @ 8500 rpm
Max Torque 3.1 Nm / 0.32 kgf-m / 2.18 ft/lbs @ 6500 rpm
Clutch Centrifugal
Transmission CVT
Final Drive Belt
Frame Steel, monocuna split steel tube
Front Suspension Telescopic fork
Front Wheel Travel 70 mm / 2.8 in.
Rear Suspension Twin sided swing arm
Rear Wheel Travel 68 mm / 2.7 in.
Front Brakes Hydraulic disc, 226 mm
Rear Brakes Drum, 110 mm
Wheels Aluminum
Front Tire 120/60-13 tubeless
Rear Tire 130/70-12 tubeless
Dimensions Length: 1900 mm / 74.8 in. Width: 655 mm / 25.8 in. Height: 1040 mm / 40.9 in.
Wheelbase 1320 mm / 52.0 in.
Seat Height 775 mm / 30.5 in.
Dry Weight 98 kg / 216 lbs
Wet Weight 109 kg / 240 lbs
Fuel Capacity 5.2 L / 1.4 US gal
Average Fuel Consumption 2.1 L/100km / 67 km/l 110 US mpg
Top Speed 60 km/h / 37 mph
Colours Black, Red, Yellow, Light blue