2003 Triumph Speed Four
2003 Triumph Speed Four
This is the machine that has totally changed perceptions of ‘naked’ 600cc machines. Triumph tends to do things differently, and the new Speed 4 is another visually stunning and mechanically refined example of Triumph’s brave vision, fresh thinking and quality production.
Launched to worldwide acclaim just before a fire at the Hinckley plant brought production to an abrupt halt, the Speed Four has made a new market in the 600 class. Just like the Speed Triple changed the way people thought about the unfaired machinery in the bigger capacity class.
Built as a high specification machine in its own right and not as a bargain version of a Supersports 600, the attention to detail and quality shines out in true Triumph tradition. Using the latest 2002 specification TT600 engine as a platform, the fuel injected, in-line four-cylinder engine features different camshaft profiles and re-mapped fuel injection for a broad spread of mid-range power and torque.
The lightweight chassis offers all the abilities of a supersports package – generous ground clearance, sharp, accurate steering, powerful, progressive brakes and fully adjustable suspension front and rear.
Already coming out on top in tests against its rivals, the Speed 4 is also sweeping to victory on the racetrack too. At the time of writing, a Speed Four has qualified on pole, set the fastest lap and won the race in four out of six rounds of the French Roadster Cup series. Proof, if any were needed, that the Speed label is entirely appropriate.
Its looks are now part of the Triumph trademark styling: twin chromed headlights, a neat instrument cluster behind a racy flyscreen, and this time, those purposeful air scoops either side of the frame rails. And all highlighted in a choice of either typically vibrant or more reserved colours.
Alarm/Immobiliser (Thatcham Category MC1 compliant)
Colour Co-ordinated Radiator Cowls
Colour Co-ordinated Belly Pan
Carbon Fibre Tank Pad
Front Mudguard Extension
Rear Mudguard Extension
34PS Restrictor Kit
Type Liquid-cooled, DOHC, in-line 4-cylinder
Bore/Stroke 68 x 41.3mm
Compression Ratio 12.5:1
Fuel System Multipoint sequential electronic fuel injection with forced air induction
Ignition Digital – inductive type – via electronic engine management system
Primary Drive Gear
Final Drive X ring chain
Clutch Wet, multi-plate
Frame Aluminium beam perimeter
Swingarm Twin-sided, aluminium alloy
Wheels Front Alloy 3-spoke, 17 x 3.5in
Rear Alloy 3-spoke, 17 x 5.5in
Tyres Front 120/70 ZR 17
Rear 180/55 ZR 17
Suspension Front 43mm forks with dual rate springs and adjustable preload, compression and rebound damping
Rear Monoshock with adjustable preload, compression and rebound damping
Brakes Front Twin 310mm floating discs, 4 piston calipers
Rear Single 220mm disc, single piston caliper
Length 2060mm (81.1in)
Width (Handlebars) 690mm (27.2in)
Height 1150mm (45.3in)
Seat Height 810mm (31.9in)
Wheelbase 1395mm (54.9in)
Dry Weight 170kg (374lb)
Fuel Tank Capacity 18 litres (4.7 gal US)
(Measured at crankshaft to DIN 70020, excludes effect of forced air induction)
Maximum Torque 68Nm (50.5ft.lbf) at 11,000rpm
Warranty 2 years, unlimited mileage
Service Intervals 4000 miles or one year, whichever comes first