Market Segment:
High-performance sportbike (Daytona 955i) and naked sportbike (Speed Triple), popular in the late 90s and early 2000s for their characterful triple engines.
Competitors 2002:
Daytona 955i: Yamaha YZF-R1, Suzuki GSX-R1000, Honda CBR954RR. Speed Triple: Ducati Monster S4, Yamaha FZ1, Aprilia Tuono.
Engine Character:
Renowned for the unique torque delivery and sound of Triumph's inline triple engine.
Chassis Design:
Daytona: Sport-focused ergonomics and suspension. Speed Triple: More upright and comfortable for everyday riding, aggressive styling.
Value Proposition:
Provides essential information for owners and technicians to maintain, diagnose, and repair these iconic Triumph motorcycles, crucial for preserving performance and longevity.
Engine Management:
Fuel injection system, ignition system, ECU diagnostics, sensor testing, emissions control.
Engine Mechanical:
Top-end overhaul (cylinder head, valves), bottom-end overhaul (crankshaft, connecting rods, pistons), timing chain and tensioner replacement, cooling system.
Transmission Drivetrain:
Clutch assembly, gearbox operation, gear selection mechanism, chain and sprocket maintenance, final drive inspection.
Chassis Suspension:
Front forks (cartridge and damper rod service, oil changes, seal replacement), rear shock absorber (spring preload, damping adjustments, rebuild procedures), swingarm and linkage maintenance, wheel bearing replacement.
Brakes:
Front and rear brake caliper service, brake pad replacement, hydraulic system bleeding, master cylinder overhaul, brake hose inspection and replacement, ABS system (if equipped) diagnostics.
Electrical System:
Wiring diagrams, battery maintenance, charging system (stator, regulator/rectifier), starter motor, lighting system, instrumentation, horn, starter solenoid, fuse box and relay identification.
Fuel System:
Fuel tank removal and installation, fuel pump testing, fuel filter replacement, injector cleaning and testing.
Bodywork Fairings:
Fairing removal and installation procedures, seat removal, fuel tank cover, fender replacement, decal application.
Maintenance Procedures:
Routine inspections, oil and filter changes, air filter replacement, spark plug replacement, chain lubrication and adjustment, brake fluid flush, coolant flush and replacement, valve clearance checks.
Troubleshooting Diagnostics:
Step-by-step diagnostic charts for common issues (e.g., starting problems, poor running, electrical faults), fault code interpretation, component testing procedures.
Repair Procedures:
Detailed instructions for component disassembly, cleaning, inspection, repair, and reassembly for all major systems.
Special Tools Requirements:
Identification and usage of specialized tools required for specific maintenance and repair tasks.
Depth Of Coverage:
Comprehensive coverage suitable for both amateur enthusiasts performing routine maintenance and professional mechanics undertaking major repairs and engine rebuilds.
Engine Type:
Liquid-cooled, 12-valve, DOHC, inline three-cylinder
Displacement:
955cc (955 cubic centimeters)
Bore X Stroke:
74.0 mm x 74.0 mm (approximate, refer to manual for exact)
Compression Ratio:
11.2:1 (approximate)
Horsepower:
Daytona 955i: Approx. 149 hp @ 10000 rpm; Speed Triple: Approx. 110 hp @ 9500 rpm (figures vary slightly by specific model year/variant)
Torque:
Daytona 955i: Approx. 102 Nm @ 7500 rpm; Speed Triple: Approx. 97 Nm @ 7500 rpm (figures vary slightly by specific model year/variant)
Fuel Delivery:
Sequential electronic fuel injection (Sagem or Keihin ECU variants may exist, refer to manual for specifics).
Fuel Type:
Unleaded gasoline, minimum 95 RON (91 AKI)
Ignition Type:
Digital electronic ignition with variable ignition timing.
Cooling Medium:
Water-cooled (ethylene glycol and water mixture).
Safety Certification:
Meets relevant national and international motorcycle safety standards for the model year of manufacture.
Braking System Front:
Twin 320mm discs with 4-piston calipers (e.g., Brembo, Nissin). Some later models may have ABS option.
Braking System Rear:
Single 255mm disc with 2-piston caliper. Some later models may have ABS option.
Lighting:
Halogen headlights, LED taillight/brake light.
Instrumentation Type:
Analog tachometer and speedometer, digital odometer, trip meters, clock, coolant temperature gauge, and warning lights.
ABS Availability:
Optional ABS was available on some versions of these models during this period. Manual will cover diagnostic procedures if equipped.
Diagnostic Interface:
On-board diagnostics (OBD) interface for connecting diagnostic tools, allowing for fault code reading and system checks.
Oil Change Interval:
Every 6,000 miles or 12 months, whichever comes first. Refer to manual for specific riding conditions.
Valve Clearance Check:
Every 12,000 miles or 24 months. Crucial for maintaining engine performance.
Coolant Change:
Every 24,000 miles or 24 months.
Engine Oil Type:
SAE 10W-40 motorcycle-specific engine oil, meeting API SG or higher and JASO MA specification. (E.g., Castrol Power RS 4T, Motul 5100).
Engine Oil Capacity:
Approx. 3.7 liters (without filter change), 3.9 liters (with filter change). Refer to manual for exact.
Coolant Type:
Permanent antifreeze coolant, typically a 50/50 mix of ethylene glycol and distilled water. Triumph recommends specific coolant types; consult manual.
Brake Fluid Type:
DOT 4 hydraulic brake fluid.
Clutch Fluid Type:
DOT 4 hydraulic fluid (if hydraulic clutch).
Common Wear Items:
Clutch slave cylinder seals, regulator/rectifier, cam chain tensioner, fuel pump relay, front fork seals.
Electrical Gremlins:
Some owners report occasional issues with the wiring harness or connectors, especially after prolonged exposure to weather. Regular inspection is advised.
Suspension Performance:
Fork oil degradation over time can affect damping. Regular fork service is beneficial.
Brand Legacy:
Triumph Motorcycles Ltd. boasts a rich history dating back to 1902, known for innovative designs and distinctive British character, particularly its triple engines.
Daytona Evolution:
The Daytona 955i evolved from the earlier T509 Speed Triple and Daytona 900 models, representing Triumph's move to larger displacement sportbikes with advanced fuel injection and chassis technology.
Speed Triple Evolution:
The Speed Triple has always been the streetfighter sibling, characterized by its aggressive styling, higher handlebars, and detuned but torquey triple engine, making it a popular choice for discerning riders.
Manufacturing Location:
Hinckley, Leicestershire, England.
