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Triumph Speed Four

British motorcycle

Summary

British motorcycle

Field	Value
name	Triumph Speed Four
image	Triumph Speed Four 2003.jpg
manufacturer	Triumph
production	2002–2006
predecessor	Triumph TT600
successor	Street Triple
class	Naked bike
engine	599 cc, liquid-cooled DOHC inline-4
bore_stroke	68.0 ×
compression	12.5:1
top_speed	135 mph
power	98 hp @ 11,750 rpm
torque	41 lbft @ 8000 rpm
tires	Front: 120/70 ZR 17
Rear: 180/55 ZR 17
suspension	Front: 43 mm cartridge forks with dual rate springs and adjustable preload, compression and rebound damping
Rear: Monoshock with adjustable preload, rebound and compression damping
brakes	Front: Twin 310 mm floating discs, 4 piston calipers
Rear: Single 220mm disc, single piston caliper
transmission	6 speed, chain drive
rake_trail	24°, 89.1 mm
wheelbase	1394 mm
length	2060 mm
width	665 mm
height	1150 mm
seat_height	810 mm
wet_weight	449 lb
fuel_capacity	18 l
fuel_consumption	41 mpgus
sp	uk

Rear: 180/55 ZR 17 Rear: Monoshock with adjustable preload, rebound and compression damping Rear: Single 220mm disc, single piston caliper

The Triumph Speed Four is a standard or streetfighter motorcycle made by Triumph from 2002 to 2006 as the naked, or non-faired brother of the TT600 sport bike introduced in 1999.

Design

The Speed Four has similar twin round headlights to the Speed Triple, but a different frame and engine. The Speed Four has the clip-on handlebars of the TT600, rather than the motocross-inspired handlebars of the Speed Triple and other streetfighters.

The Speed Four is mechanically similar to its predecessor, the TT600, with the exceptions of the cam profiles, ignition and fuel injection mapping, front spring rate, and other minor concessions to its streetfighter style; the frame and fully adjustable suspension are race-ready.

The engine is a 599 cc inline-four-cylinder engine, as used in the TT600. The bike has a top speed of 135 mph and a 0 - time of 4.5 seconds. Motorcyclist tested the 2002 Speed Four's 0 to time at 11.65 seconds @ 114.9 mph and 0 to time at 3.71 seconds.

Reception

The Speed Four was voted No.1 for handling and suspension in Ride magazine's 2008 Rider Power Survey. The Triumph Daytona 675 was second in the same category.

Productions Totals

Triumph UK After Sales has confirmed that 4,606 Speed Fours were produced from 2002 through 2006. Of those 1,011 were produced for the US market with a further 54 for Canada.

References

[http://www.visordown.com/reviews/motorcycles/naked/triumph-speed-four/specification/86.html Visordown: Triumph Speed Four Specification]
"RiDER Power: The world's best handling motorcycles aren't sportsbikes". Motorcycle News.
"Road Test: Middleweight Test". Visordown.
(December 2002). "Triumph speed four: undressed for success. (Road Test)".

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

triumph-motorcycles-ltd-motorcycles standard-motorcycles motorcycles-introduced-in-2002

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