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{{DISPLAYTITLE:{{PAGENAME}}: history, specs, pictures}}
[[Image:2002-Triumph-Speed-Four.jpg|left|thumb|2002 Triumph Speed Four]]
{{Motorcycle
<br style="clear: left"/>
|name            = Triumph Speed Four
|photo= 2002-Triumph-Speed-Four.jpg
|aka              =
|manufacturer    = Triumph
|parent_company  =
|production      = 2003 - 2006
|model_year      =
|predecessor      =
|successor        =
|class            = Naked
|engine          = Liquid-cooled, DOHC, in-line 4-cylinder, 4-stroke
|bore_stroke      = 68.6mm x 68.6mm
|compression      = 12.5:1
|top_speed        =
|power            = 98.03 HP (73.1 KW) @ 11750RPM
|torque          = 50.16 ft/lbs (68.0 Nm) @ 10500RPM
|fuel_system      = Multipoint sequential [[electronic fuel injection]] with forced air induction
|ignition        = digital - inductive type - via electronic engine management system
|spark_plug      = {{sparkplug|NGK CR9EK}} '03-05
|battery          = {{battery|YUASA YB14L-A2}} '03-05
|transmission    = Gear box: Gears <br>
Final Drive: X-ring [[chain]] <br>
Clutch: Wet, multiplate <br>
 
|frame            =
|suspension      =Front: 43mm forks with dual rate springs and adjustable preload, rebound and [[compression damping]] <br>
Rear: Monoshock with adjustable preload, rebound and compression damping
|brakes          =Front: Twin 310mm floating discs, 4 [[piston]] [[calipers]] <br>Rear: Single 220mm disc, single piston caliper
|front_tire      = {{tire|120/70 ZR17}}
|rear_tire    = {{tire|180/55 ZR17}}
|rake_trail      =
|wheelbase        = 54.88 inches (1394 mm)
|length          = 85.2 inches (2164 mm)
|width            = 27.2 inches (691 mm)
|height          = 43.7 inches (1110 mm)
|seat_height      = 31.89 inches (810 mm)
|dry_weight      = 374.79 pounds (170.0 Kg)
|wet_weight      = 170.0 kg
|fuel_capacity    = 4.39 Gallon (16.60 Liters)
|oil_capacity    =
|fuel_consumption =
|turning_radius  =
|related          = [[Triumph Speed Triple]]
|competition      =
|air_filter= {{airfilter|K&N TB-6000}} `03-05<ref name="kl_2019">{{cite book|title=2019 K&L Supply Co Catalog|publisher=[https://www.klsupply.com/ K&L Supply Co]|date=2019}}</ref>
|final_drive= {{chain|525}} `02-06<ref name="wps_street_2019">{{cite book|title=2019 Western Power Sports Catalog|publisher=[https://www.wps-inc.com/catalogs Western Power Sports]|date=2019}}</ref>
}}
 
The '''[[Triumph]] Speed Four''' was a Liquid-cooled, DOHC, in-line 4-cylinder, 4-stroke Naked [[motorcycle]] produced by [[Triumph]] between 2003 and 2006. Max [[torque]] was 50.16 ft/lbs (68.0 Nm) @ 10500 RPM. Claimed [[horsepower]] was 98.03 HP (73.1 KW) @ 11750 RPM. 
 
==Engine==
The engine was a [[liquid cooled]] Liquid-cooled, DOHC, in-line 4-cylinder, 4-stroke. A 68.6mm [[bore]] x 68.6mm [[stroke]] result in a [[displacement]] of just 599.0 cubic centimeters. Fuel was supplied via a double overhead cams/twin [[cam]] (dohc). 
 
==Drive==
The bike has a Gears transmission. Power was moderated via the Wet, multiplate. 
 
==Chassis==
It came with a 120/70 ZR17 front [[tire]] and a 180/55 ZR17 rear tire. Stopping was achieved via Twin 310mm floating discs, 4 piston calipers in the front and a Single 220mm disc, single piston [[caliper]] in the rear. The front suspension was a  43mm forks with dual rate springs and adjustable preload, rebound and compression damping while the rear was equipped with a Monoshock with adjustable preload, rebound and compression damping. The Speed Four was fitted with a 4.39 Gallon (16.60 Liters) fuel tank. The bike weighed just 374.79 pounds (170.0 Kg). The wheelbase was 54.88 inches (1394 mm) long. 
 
==2003 Triumph Speed Four==
[[File:triumph-speed-four-2003-2003-3.jpg|600px|2003 Triumph Speed Four]]
[[File:triumph-speed-four-2003-2003-2.jpg|600px|2003 Triumph Speed Four]]
[[File:triumph-speed-four-2003-2003-1.jpg|600px|2003 Triumph Speed Four]]
[[File:triumph-speed-four-2003-2003-0.jpg|600px|2003 Triumph Speed Four]]
 
An intriguing presence, the 2002 Speed Four is a naked supersport bike with an ultra-aggressive styling meant to boast both performance and the head-turning factor. Powerful and exceptionally maneuverable, the 2002 Speed Four comes with a lightweight chassis and progressive, predictable brakes and fully adjustable suspensions, front and rear.
 
For both track fun and city slicing, the 2002 Speed Four is a valid choice in case you're looking for high-adrenaline fun and modern British character.
 
 
==2004 Triumph Speed Four==
[[File:triumph-speed-four-2004-2004-2.jpg|600px|2004 Triumph Speed Four]]
[[File:triumph-speed-four-2004-2004-1.jpg|600px|2004 Triumph Speed Four]]
[[File:triumph-speed-four-2004-2004-0.jpg|600px|2004 Triumph Speed Four]]
 
The 2003 Speed Four is a sweet derivation from the acclaimed Daytona 600 machine, but it rather establishes a class of its own. Most likely it's the radical styling which will make heads turn: naked, agile and utterly aggressive, the Speed Four also comes with exceptional handling and a strong feeling of being in control.
 
With powerful brakes and its lightweight construction, the 2003 Speed Four is a sweet choice for urban riding, being an excellent commuter and doubling as a nimble machine for weekends at the track or just leisure riding.
 
 
==2005 Triumph Speed Four==
[[File:triumph-speed-four-2005-2005-2.jpg|600px|2005 Triumph Speed Four]]
[[File:triumph-speed-four-2005-2005-1.jpg|600px|2005 Triumph Speed Four]]
[[File:triumph-speed-four-2005-2005-0.jpg|600px|2005 Triumph Speed Four]]
 
The 2004 Speed Four carries on the naked roadster heritage and brings all the brawn of a supersport machine in a more streetable package which is great for daily riders as it is rewarding on the track or for weekend getaways. Exceptional handling and an upright riding position add a lot of usability for this bike, while the uncompromised, straightforward styling is all radical Triumph DNA.
 
Light and nimble, the 2004 Speed Four is a great sporty all-rounder which will provide enormous fun in pretty much any scenario.
 
 
==2006 Triumph Speed Four==
[[File:triumph-speed-four-2006-2006-4.jpg|600px|2006 Triumph Speed Four]]
[[File:triumph-speed-four-2006-2006-3.jpg|600px|2006 Triumph Speed Four]]
[[File:triumph-speed-four-2006-2006-2.jpg|600px|2006 Triumph Speed Four]]
[[File:triumph-speed-four-2006-2006-1.jpg|600px|2006 Triumph Speed Four]]
[[File:triumph-speed-four-2006-2006-0.jpg|600px|2006 Triumph Speed Four]]
 
One of the last in-line 4 machines manufactured by Triumph, the Speed Four is a high-performance roadster which boasts its ultra-aggressive styling and matches it with equally thrilling performance from the supersport-class 599cc engine.
 
A middleweight naked beast for exceptional fun in the busy urban traffic and even more fun for fast weekend getaways around the city, the Speed Four is a great choice for a daily bike. And with adjustable suspensions, there's no telling how fun time spent aboard it can be.
 
==References==
{{reflist}}


{{Triumph}}
{{Triumph}}


[[Category:Triumph motorcycles|Speed Four]]
[[Category:Triumph motorcycles]]
[[Category:Naked motorcycles]]
[[Category:2000s motorcycles]]

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