Category:
Sportbike / Performance Motorcycle
Target Audience:
Enthusiasts, track day riders, mechanics
Key Competitors:
Yamaha TZR250, Kawasaki KR-1/KR-1S, Honda NSR250
Engine Type:
Liquid-cooled, 2-stroke, 90-degree V-twin (Suzuki's 'RG-Gamma' engine architecture)
Performance Focus:
High-revving, power-band oriented performance
Chassis Design:
Aluminum twin-spar frame (later models), advanced suspension for its era
Technological Advancements:
Cylinder Reed Valve (CRV), Suzuki Tacho Booster (STB) on some models, Apexcooling system
Engine:
Two-stroke V-twin, cooling system, lubrication, ignition, fuel delivery (carburetion), exhaust
Transmission:
6-speed gearbox, clutch, shift mechanism, lubrication
Chassis And Suspension:
Frame, front fork (Telescopic, upside-down variants), rear shock absorber (Monoshock, linkage), swingarm, steering head
Brakes:
Front and rear disc brakes, hydraulic system, caliper, master cylinder specifications
Electrical System:
Wiring diagrams, lighting, ignition system, battery, charging system, sensors, ECU (if applicable), instrument panel
Fuel System:
Carburetor tuning and rebuilding (Mikuni T25/T30 variants), fuel tank, fuel lines
Bodywork And Cosmetics:
Fairings, seat, fuel tank, body panel removal and installation, graphics
Maintenance:
Scheduled maintenance, oil changes, filter replacements, chain adjustment, spark plug service, brake fluid flush
Troubleshooting:
Diagnostic flowcharts, common problems and solutions, electrical system diagnostics
Repair:
Engine rebuild, gearbox overhaul, suspension component replacement, brake caliper servicing, electrical component repair
Component Disassembly And Assembly:
Detailed step-by-step instructions with torque specifications
Wiring Diagrams:
Complete and detailed electrical system schematics
Depth:
Complete rebuild and diagnostic procedures
Diagnostic Capabilities:
Advanced troubleshooting for engine performance and electrical issues
Customization Support:
Information relevant to stock configurations, not aftermarket tuning
Engine Type:
Liquid-cooled, 2-stroke, 90-degree V-twin
Bore X Stroke:
54.0 mm x 54.5 mm
Compression Ratio:
7.8:1 (typical, varies slightly by year/model)
Valvetrain:
Reed valve induction
Horsepower Peak:
Approx. 55-60 HP (claimed, varies by market and year)
Torque Peak:
Approx. 30-33 lb-ft (claimed, varies by market and year)
Redline:
10,500 RPM (approx.)
Carburetors:
Dual Mikuni VM26SS (VJ22A) or Mikuni T25 (VJ23A)
Fuel Type:
Unleaded gasoline (95-98 RON recommended)
Fuel Induction:
Carburetor
Oil System:
Total loss 2-stroke oil injection system
Length:
Approx. 2000 mm (varies by year)
Width:
Approx. 710 mm (varies by year)
Height:
Approx. 1130 mm (varies by year)
Wheelbase:
Approx. 1370 mm (varies by year)
Dry Weight:
Approx. 135-140 kg (varies by year/spec)
Wet Weight:
Approx. 155-160 kg (fully fueled, varies)
Crash Test Ratings:
N/A (Motorcycle, no formal ratings comparable to cars)
Braking System:
Dual front disc brakes, single rear disc brake
Suspension:
Performance-oriented front and rear suspension for stability
Lighting:
Halogen headlight, taillight, turn signals
Frame Structure:
Rigid twin-spar frame for rider safety and handling
System:
N/A (No modern infotainment system)
Display:
Analog speedometer, tachometer, odometer, trip meter, basic indicator lights
Features:
N/A (No electronic rider aids)
Oil Change Recommendation:
Every 3,000 km or 6 months (engine oil)
Spark Plug Replacement:
Every 6,000 km or 12 months
Chain Cleaning And Lubrication:
Every 1,000 km or after riding in wet conditions
Brake Fluid Flush:
Every 24,000 km or 24 months
Engine Oil Type:
2-stroke specific, JASO FD certified (e.g., Motul 800 2T Factory Line, Castrol TTS)
Transmission Oil Type:
SAE 80 or SAE 10W-40 API GL-3 or GL-4 gear oil (capacity approx. 0.75 L)
Coolant Type:
Ethylene glycol-based coolant (50% mixture with distilled water)
Common Problems:
Carburetor synchronization issues, reed valve wear, crank seal leaks, C.D.I. unit failures, power valve sticking, electrical connector corrosion
Maintenance Focus Areas:
Regular decarbonization, careful carb jetting, proper oil mixture, cleaning of powervalves
Manufacturer:
Suzuki Motor Corporation
Racing Legacy:
Direct lineage from Suzuki's successful Grand Prix racing machines (RG series)
Generation 1:
VJ21A (1987-1989), 80-degree V-twin, leading axle front forks
Generation 2:
VJ22A (1990-1993), 90-degree V-twin, upside-down front forks, revised aerodynamics, possibly SRAD branding on some later models
Generation 3:
VJ23A (1994-1996), further refinements, often considered the 'final' iteration before being replaced by 4-stroke models in Suzuki's lineup
Manufacturing Location:
Japan
Market Availability:
Global (Japan, Europe, North America, Australia, etc.)
Category:
Performance Motorcycle of its Era
Recognition Details:
Consistently praised for its handling, potent two-stroke engine, and racing pedigree by motorcycle publications of the time.
Track Performance:
Highly regarded for track day capability and competitive racing in its class.
