2002 Triumph Speed Triple 955i



2002-2006 Triumph Speed Triple 955i Full Specifications

Get to know the 2002-2006 Triumph Speed Triple 955i in exquisite detail with our meticulously crafted motorcycle specifications tables.

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Dimensions Specifications Table

Overall length2,115 mm
Overall width780 mm
Overall height1,340 mm
Wheelbase1,431 mm
Seat height815 mm
Dry Weight186 kg (without fuel and fluids)
Maximum payload185 kg (rider, passenger, luggage and accessories)

Frame Specifications Table

Frame typeTwin-spar aluminium
Rake / Caster angle22.8 °
Trail length81 mm

Engine Specifications Table

Power120 PS @ 9,100 rpm
Torque100 Nm @ 5,100 rpm
Engine capacity / displacement955 cc
Engine configuration3 Cylinder, 12 Valve DOHC
ArrangementTransverse In-line
Bore and Stroke79 mm x 65 mm
Compression ratio12 : 1
Cylinder numbering / sequencingLeft to Right (No. 3 adjacent to camchain)
Flying order1 - 2 - 3

Cylinder Head Specifications Table

Intake valve seat angle45 °
Intake valve seat width0.9 mm - 1.1 mm
1.5 mm (service limit)
Exhaust valve seat angle45 °
Exhaust valve seat width1.1 mm - 1.3 mm
1.7 mm (service limit)

Valves and Springs Specifications Table

Intake valve lift9.15 mm
Intake valve stem diameter4.975 mm - 4.990 mm
4.965 mm (service limit)
Intake valve guide diamater5.00 mm - 5.015 mm (bore)
Intake valve guide diameter5.043 mm (bore service limit)
Intake valve stem to guide clearance0.010 mm - 0.040 mm
Intake valve seat angle45 °
Intake valve head diameter33.5 mm
Intake valve seat width1.5 mm - 1.9 mm
Exhaust valve lift8.00 mm
Exhaust valve stem diameter4.955 mm - 4.990 mm
4.945 mm (service limit)
Exhaust valve guide diameter5.00 mm - 5.035 mm (bore)
5.063 mm (bore service limit)
Exhaust valve stem to guide clearance0.030 mm - 0.060 mm
Exhaust valve seat angle45 °
Exhaust valve head diameter27.0 mm
Exhaust valve seat width1.5 mm - 1.9 mm

Camshaft and Timing Specifications Table

Intake valve cam timingopens @ 26º BTDC @ 1.0 mm lift
closes @ 38º ABDC @ 1.0 mm lift
244 ° open duration
Exhaust valve cam timingopens @ 43º BBDC @ 1.0 mm lift
closes @ 5º ATDC @ 1.0 mm lift
228 ° open duration
Camshaft journal diameter22.93 mm - 22.96 mm (outer)
23.000 mm - 23.021 mm (bore)
Camshaft journal clearance0.040 mm - 0.091 mm
0.13 mm (service limit)
Camshaft end float0.03 mm - 0.13 mm
0.20 mm (service limit)
Camshaft run-out0.05 mm (service limit)

Crankshaft Specifications Table

Crankshaft big end journal diameter40.946 mm - 40.960 mm
40.922 mm (service limit)
Crankshaft big end bearing clearance0.036 mm - 0.066 mm
0.10 mm (service limit)
Crankshaft main bearing journal diameter37.960 mm - 37.976 mm
37.936 mm (service limit)
Crankshaft main bearing clearance0.019 mm - 0.044 mm
0.07 mm (service limit)
Crankshaft end float0.05 mm - 0.20 mm
0.40 mm (service limit)
Crankshaft run-out0.02 mm
0.5 mm (service limit)

Cylinder and Piston Specifications Table

Cylinder bore diameter79.030 mm - 79.050 mm (bore)
79.100 mm (bore service limit)
Top piston ring to groove clearance0.02 mm - 0.06 mm
0.075 mm (service limit)
Second piston ring to groove clearance0.02 mm - 0.06 mm
0.075 mm (service limit)
Top piston ring end gaps0.28 mm - 0.43 mm
0.55 mm (service limit)
Second piston ring end gaps0.43 mm - 0.58 mm
0.73 mm (service limit)
Piston ring oil end gaps0.33 mm - 0.83 mm
1.03 mm (service limit)
Connecting rod small end diameter19.016 mm - 19.034 mm (inner)
19.050 mm (inner service limit)
Connecting rod big end side clearance0.15 mm - 0.30 mm
0.50 mm (service limit)

Clutch and Primary Drive Specifications Table

Primary Drive typeGear
Reduction ratio1.75 (105 / 60)
Clutch typeWet multi-plate
Clutch actuation methodCable
Clutch lever free play0.4 mm - 0.8 mm
Number of friction plates10
Friction plate thickness3.80 mm
3.6 mm (service limit)

Transmission Specifications Table

Type6 Speed Constant Mesh
Gear ratio1st gear = 2.733 : 1 (41 / 15)
2nd gear = 1.947 (37 / 19)
3rd gear = 1.545 : 1 (34 / 22)
4th gear = 1.291 : 1 (31 / 24)
5th gear = 1.154 : 1 (30 / 26)
6th gear = 1.074 : 1 (29 / 27)
Gear selector fork / claw thickness5.8 mm - 5.9 mm
Gear selector fork /claw thickness5.7 mm (service limit)
Gear selector groove width6.0 mm - 6.1 mm
6.25 mm (service limit)
Gear selector fork to groove clearance0.55 mm (service limit)

Final Drive Specifications Table

Final driveChain
Final drive ratio2.333 : 1 (18 / 42) - single sided swing arm
2.316 : 1 (19 / 44) - twin sided swing arm (option 2)
Chain typeDID X-ring
Number of chain links106 links
Length of 10 links160.5 mm
Drive chain playSingle sided swing arm - 35 mm - 40 mm

Lubrication Specifications Table

System typePressure Lubrication, Wet sump
Oil capacity3.50 litres (dry fill)
3.20 litres (wet fill, includes filter)
3.00 litres (wet fill, excludes filter)
Oil pressure40.0 psi (in main gallery)
Oil pump rotor tip clearance0.15 mm
0.2 mm (service limit)
Oil pump body clearance0.15 mm - 0.22 mm
0.35 mm (service limit)
Oil pump rotor end float0.02 mm - 0.07 mm
0.10 mm (service limit)

Cooling System Specifications Specifications Table

Coolant mixture50/50 Distilled Water / Anti-Freeze
Anti-freeze typeMobil Antifreeze
Freezing point- 35 ℃
Coolant system capacity2.8 litres
Radiator cap opening pressure15.9542 psi
Thermostat begin to open temperature88 ℃
Cooling fan temperatureswitches ON @ 103 ℃
Temperature gauge sensor resistance2.9 KΩ - 3.3 KΩ @ 15 ℃

Fuel System Specifications Table

Fuel typeUnleaded, 95 RON (U.S. 89 CLC/AKI)
Fuel tank capacity22 litres
Low level warning lamp4 litres remaining
Fuel pump typeSubmerged
Fuel pressure43.511 psi (nominal)
Purge control systemElectronic via fuel system ECU

Fuel Injection System Specifications Table

TypeElectronic, sequential
Idle speed1,200 rpm
Injector typeTwin jet, solenoid operated plate valve
ThrottleCable / twist grip / electronic throttle potentiometer
Control sensorsBarometric Pressure Throttle Position, Coolant Temperature Crankshaft Position, Lambda Sensor Induction air temperature

Ignition System Specifications Table

TypeDigital Inductive
Electronic rev limiter9,700 rpm
Timing pick-up coil resistance0.56 KΩ ± 10% @ 20 ℃
Ignition coil typePlug-top
Spark plug typeNGK-CR9EK
Spark plug gap0.7 mm

Front Suspension and Steering Specifications Table

Front axel travel120 mm
Recommended front fork oil gradeShowa SS8
Oil level586 mm (fork fully compressed, sping removed)

Rear Suspension Specifications Table

Rear axel travel140 mm
Rear suspension bearing greaseMobil Grease HP 222

Front Brake Specifications Table

Front brake typeTwo Hydraulically Actuated Four Piston Calipers acting on twin discs
Front disc diameter320 mm
Front disc thickness4 mm
3.5 mm (service limit)
Front disc run-out0.3 mm (service limit)
Recommended front brake fluidMobil Universal Brake and Clutch Fluid DOT 4
Front master cylinder diameter14 mm (inner)
Front caliper piston A diameter33.96 mm (outer)

Rear Brake Specifications Table

Rear brake typeHydraulically Actuated 2 Piston Caliper Single disc
Rear disc diameter220 mm
Rear disc thickness5 mm
4.5 mm (service limit)
Recommended rear brake fluidMobil Universal Brake and Clutch Fluid DOT 4
Rear master cylinder diameter14 mm (inner)
Rear caliper piston A diameter38.18 mm (outer)

Wheels and Tyres Specifications Table

Front wheel rim axial run-out0.5 mm (service limit)
Front wheel rim radial run-out0.5 mm (service limit)
Rear wheel rim radial run-out0.5 mm (service limit)
Rear wheel rim axial run-out0.5 mm (service limit)

Electrical Charging Specifications Table

Battery typeGS GTX14-BS
Battery voltage rating12 volts DC
Battery capacity12 ampere hour (Ah)
Alternator current rating35 amps


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