Positioning:
High-performance sportbike targeting discerning riders seeking power and handling
Competitors:
Competed against Japanese inline-fours and twins from Yamaha (R1, R6), Honda (CBR series), Kawasaki (ZX series), Suzuki (GSX-R series), and Ducati.
Engine Layout:
Inline three-cylinder engine
Frame Type:
Aluminum twin-spar frame
Suspension Type:
USD (Upside-Down) front forks, Monoshock rear suspension
Engine:
Detailed engine overhaul, diagnosis, and tuning
Fuel System:
Fuel injection system (throttle bodies, injectors, fuel pump, pressure regulator)
Ignition System:
ECU, ignition coils, spark plugs, timing
Transmission:
Gearbox, clutch operation and adjustment, shift mechanism
Cooling System:
Radiator, thermostat, fan, coolant flow and flushing
Electrical System:
Wiring diagrams, charging system (alternator, battery), starting system, lighting, instruments
Suspension:
Front fork (rebuild, oil levels, adjustments), rear shock absorber (spring preload, damping)
Brakes:
Front and rear brake systems, hydraulic lines, caliper overhaul, pad replacement, bleeding procedures
Wheels And Tires:
Wheel bearing replacement, tire pressures, mounting
Frame And Bodywork:
Chassis inspection, fairing removal/installation, seat, fuel tank
Exhaust System:
Removal and installation, inspection
Maintenance:
Scheduled maintenance, oil changes, filter replacements, chain adjustment, lubrication
Troubleshooting:
Diagnostic flowcharts and common problem resolution guides
Repair:
Step-by-step instructions for component removal, repair, and reassembly
Overhaul:
Complete engine and gearbox rebuild procedures
Adjustment:
Throttle cable, clutch cable, suspension settings
Diagnostics:
Fault finding for electrical and mechanical issues
Depth:
Comprehensive from basic maintenance to full engine rebuilds and complex electrical diagnostics
Engine Type:
Liquid-cooled, 12-valve, DOHC inline three-cylinder
Displacement:
955 cc (955 cubic centimeters)
Bore X Stroke:
74.0 mm x 74.0 mm
Compression Ratio:
11.4:1
Horsepower:
Approximately 114.6 hp @ 9,500 rpm (variant dependent)
Torque:
Approximately 71.2 lb-ft (96.5 Nm) @ 7,000 rpm (variant dependent)
Fuel Delivery:
Electronic Fuel Injection (EFI) with sequential multi-point injection
Fuel Type:
Unleaded gasoline (95 RON or higher recommended)
Ignition Type:
Digital ignition controlled by ECU
Oil Type:
Fully synthetic motorcycle oil, SAE 10W-40 or 15W-50 (API SG or higher, JASO MA certified)
Oil Capacity With Filter:
Approximately 3.5 liters (3.7 US quarts)
Length:
Approximately 2070 mm (81.5 in)
Width At Handlebars:
Approximately 720 mm (28.3 in)
Height At Seat:
Approximately 830 mm (32.7 in)
Dry Weight:
Approximately 184 kg (405.7 lbs)
Wet Weight:
Approximately 203 kg (447.5 lbs) (with fluids)
NHTSA Rating:
Not Applicable (Motorcycle)
Brakes:
Dual 320mm discs with 4-piston calipers (front), Single 220mm disc with 2-piston caliper (rear)
Suspension Adjustability:
Adjustable front forks (preload/rebound), adjustable rear shock (preload/rebound)
Lighting:
Halogen headlight, LED taillight
Display:
Analog tachometer and speedometer, digital odometer, trip meters, fuel gauge, and clock.
ABS:
Optional ABS available on some models/markets for this year.
ECU:
Engine Control Unit (ECU) manages fuel injection and ignition timing.
Oil Change Interval:
Every 6,000 miles (10,000 km) or 12 months, whichever comes first
Major Service Interval:
Every 12,000 miles (20,000 km) for valve clearance checks and other major items
Chain Maintenance:
Inspect and lubricate every 600 miles (1,000 km)
Coolant Type:
Ethylene glycol based coolant, mixed 50/50 with distilled water (e.g., Triumph Coolant or equivalent)
Brake Fluid Type:
DOT 4 hydraulic brake fluid
Fork Oil Type:
Triumph recommends specific fork oil, viscosity often around 5W or 7.5W (refer to manual for exact spec and quantity)
Common Complaints:
Stiff gear changes (especially when cold), potential regulator/rectifier issues on some models/years (though less common on later T595/955i variants than earlier), minor electrical gremlins if not maintained.
Preventative Maintenance:
Regular chain cleaning and lubrication, checking battery terminals, ensuring coolant is fresh.
Manufacturer:
Triumph Motorcycles Ltd., UK
Predecessor:
Triumph T595 Daytona
Engine Development:
The 955i represented an evolution of Triumph's Speed Triple/Daytona engine, increasing displacement for more torque and power.
Production Period:
The Daytona 955i generation ran from 1999 to 2004 (with variations).
