CSC Motorcycles RX4 - 2021 Specifications and Reviews

The 2021 CSC Motorcycles RX4 is a versatile 450cc all-rounder designed for riders seeking affordable everyday practicality without compromising performance. Powered by a liquid-cooled single-cylinder four-stroke engine producing 40.2 horsepower, it delivers reliable mid-range torque ideal for commuting and recreational riding. Known for its approachable handling and straightforward mechanics, the RX4 appeals to new riders and budget-conscious enthusiasts seeking dependable transportation.

2021
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General information

CategoryAllround
Year2021
ModelCSC Motorcycles RX4

Engine and Transmission Specifications

Exhaust systemStainless steel twin pipe
Transmission typeChain   (final drive)
Gearbox6-speed
Cooling systemLiquid
Fuel controlSingle Overhead Cams (SOHC)
Fuel systemInjection. Delphi
Valves per Cylinder4
Bore x Stroke94.5 x 64.0 mm (3.7 x 2.5 inches)
Compression11.0:1
Top speed156.9 km/h (97.5 mph)
Torque37.0 Nm (3.8 kgf-m or 27.3 ft.lbs) @ 7000 RPM
Power40.2 HP (29.3 kW) @ 8000 RPM
Engine typeSingle cylinder, four-stroke
Capacity:450.3 ccm (27.48 cubic inches)
 
 

Brakes, suspension, Frame and wheels

WheelsSpoked wheels, black anodized aluminum rims
Rear brakesSingle disc
Front brakesDouble disc
Rear tire150/70-17
Front tire110/80-19
Rear SuspensionAdjustable dual shock absorbers with reservoirs
Front SuspensionInverted forks

Physical measures and capacities

Fuel capacity20.06 litres (5.30 US gallons)
Overall width881 mm (34.7 inches)
Overall length2101 mm (82.7 inches)
Overall height1389 mm (54.7 inches)
Seat height1,425 mm (56.1 inches) If adjustable, lowest setting.
Power/weight ratio0.1980 HP/kg
Dry weight203.1 kg (447.7 pounds)
 
 

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
CommentsAdjustable windscreen. Brand previously called California Scooters. Bike imported from China.
Factory warrantyTwo year unlimited mileage
Carrying capacityMolded side cases, mounting racks, top box
InstrumentsSiemens Chip LCD dash with digital speedometer, tachometer, odometer, trip odometer, fuel gauge, gear indicator, neutral light, temperature gauge, clock, turn signal and high beam indicators
StarterElectric
Color optionsFire Yellow, Sapphire Blue

Performance Profile & Rider Fit

40.2 hp
Peak Power
7.5s
0-60 mph
97.5 mph
Top Speed

Best For

Track15%
City55%
Cornering45%
Daily Riding60%
Touring65%
Passenger45%

Rider Profile

Best ForSuits beginner to intermediate riders comfortable with a tall adventure-style seat height and a single-cylinder power delivery.
PurposeBuilt as a budget-friendly adventure-touring allrounder for mixed pavement and light off-road use rather than outright speed or track performance.
Rider FitThe 1425mm seat height and 203kg dry weight mean shorter or less experienced riders may find low-speed maneuvering and stops a bit demanding.
CharacterA practical, no-nonsense single-cylinder ADV with modern electronics, long-travel suspension, and factory luggage options for real-world versatility.
Not Ideal ForNot for riders seeking high-speed highway performance, sharp cornering agility, or premium build refinement.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Reviews

Total comments: 1
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MotorcycleDB Review

The 2021 CSC Motorcycles RX4 is a powerful and versatile adventure bike that is perfect for all types of terrain. With a 450cc engine, this motorcycle offers plenty of power for long-distance rides and off-road adventures. The rugged design and durable construction make it a reliable choice for any rider looking to tackle challenging trails and explore new destinations. Whether you're cruising on the highway or navigating rocky paths, the RX4 delivers a smooth and stable ride with excellent handling. CSC Motorcycles has truly delivered a game-changing adventure bike with the 2021 RX4. The combination of power, performance, and durability make it a top choice for riders who demand versatility and reliability from their motorcycles. With its impressive off-road capabilities and comfortable riding position, the RX4 is the perfect motorcycle for exploring remote areas and taking on new challenges. Whether you're a seasoned adventurer or a beginner looking to tackle new terrain, the 2021 CSC Motorcycles RX4 is a solid choice that won't disappoint.
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