2005 crf450r hp

2005 crf450r hp DEFAULT
Sorry Taylor, but weight savings does not create horsepower. It does, however, increase acceleration.

Also sorry again but most of the mods you mentioned are a waste of $.

Keep the stock bore, I've seen first hand more power made on the stock bore than with the Athena kit.

I've been told the 07' head has the best stock porting.

Blend intake port and air box boot to the carb (aka port match)

Port match exhaust port to the header

Rebuild the engine with the essentials (new bearings/seals)

Rebuild the crank with a Falicon Knife rod, have Falicon weld the crank and balance.

13.5:1 high compression piston

05' Airbox boot

Web camshaft / Ferrea springs

Vortex X10 ignition

A full system pipe obviously (Yoshimura has some for your bike on clearance $350, I just bought one)

Bore carb to 42.5mm, Wire your accelerator pump linkage, Boyeson accelerator pump cover with adjustable leak jet.

Hinson billet clutch basket with replaceable rubbers

Manual cam chain tensioner

Boyeson supercooler (water pump)

Factory Pro jet kit, with the perforated emulsion tube.

Tuned on the dyno for race fuel

That should get you started, and mid to upper 50's ;)

Last edited by sand.man on Mon Mar 12, 2012 4:05 am, edited 1 time in total.

Sours: https://crfsonly.com/forum/viewtopic.php?t=36531

Honda CRF450R

The Honda CRF450R is a four-stroke racing motocrossmotorcycle built by Honda Motor Company. It is the successor to the Honda CR250R two-stroke.

The Honda CRF450X is the enduro version of the Honda CRF450R.

Notable changes[edit]

20047/8" Handlebars
2008Honda Progressive Steering Damper
2009Fuel injection
2013Air forks, dual exhaust
2017Spring forks, no more Progressive Steering Damper
2018Electric starter
2021Single exhaust

First generation: 2002–2004[edit]

The CRF450R was introduced in 2002. Unlike the competing YamahaYZ426, the first generation CRF450R has an aluminum frame. In 2003, Honda added a longer shock and new linkage to raise the rear end and steepen the head angle. In 2003, camshaft, exhaust, and ignition map were revised. The handlebar size was changed to 7⁄8 in (22 mm) in 2004.

Second generation: 2005–2008[edit]

PredecessorFirst Generation CRF450R
SuccessorThird Generation CRF450R
Engine449 cc (27.4 cu in) liquid-cooled, SOHC, four-stroke, single
Compression ratio12.0:1
TransmissionClose-ratio five-speed manual
SuspensionFront: 47mm inverted Showa cartridge fork with rebound and compression damping adjustability; 12.4 inches travel Rear: Pro-Link Showa single shock with spring preload, rebound damping adjustability, and high/low-speed compression damping adjustability; 12.5 inches travel
BrakesFront: Single 240 mm (9.4 in) disc with twin-piston caliper Rear: Single 240mm disc
TiresFront: 80/100-21 Rear: 110/90-19
Rake, trail26.79°, 109.4mm
Wheelbase58.7 in (1,490 mm)
Seat height37.6 in (960 mm)
Weight218.5 lb (99.1 kg) (claimed)[1] (dry)
Fuel capacity1.9 gals

The second generation CRF450R had a redesigned motor and frame with new bodywork styling from the new CRF250R. In 2008, the Honda Progressive Steering Damper (HPSD) was introduced, allowing the steering geometry to be more aggressive.

Third generation: 2009–2012[edit]

PredecessorSecond Generation CRF450R
SuccessorFourth Generation CRF450R
Engine449 cc (27.4 cu in), liquid-cooled, SOHC, four-stroke, single
Bore / stroke96 mm × 62.1 mm (3.78 in × 2.44 in)
TransmissionClose-ratio five-speed manual
SuspensionFront: 48mm inverted KYB Air-Oil-Separate (AOS) with rebound and compression damping adjustability; 12.2 inches travel Rear: Pro-Link KYB single shock with spring preload, rebound damping adjustability, and high/low-speed compression damping adjustment; 12.6 inches travel
BrakesFront: Single 240 mm (9.4 in) disc with twin-piston caliper Rear: Single 240mm disc
TiresFront: 80/100-21 Rear: 120/80-19
Rake, trail26° 52', 114.2mm
Wheelbase58.7 in
Seat height37.6 in (960 mm)
Weight234.8 lb (106.5 kg) (claimed)[2] (wet)
Fuel capacity1.5 gal

The third generation CRF450R had fuel-injection and an all-new bike to match.

Fourth generation: 2013–2016[edit]

PredecessorThird Generation CRF450R
Engine449 cc (27.4 cu in) liquid-cooled, SOHCfour-stroke, single
Compression ratio12.5:1
TransmissionClose-ratio five-speed manual
SuspensionFront: 48mm inverted KYB PSF® (Pneumatic Spring Fork) with rebound and compression-damping adjustability. 12.2 inches travel. Rear: Pro-Link® KYB single shock with adjustable spring preload, rebound damping adjustability, and high/low-speed compression damping adjustment. 12.4 inches travel
BrakesFront: Single 240 mm (9.4 in) disc with twin-piston caliper Rear: Single 240mm disc
TiresFront: Dunlop MX51FA 80/100-21 Rear: Dunlop MX51 120/80-19
Rake, trail27° 04', 116mm
Wheelbase58.7 in (1,490 mm)
Seat height37.5 in (950 mm)
Weight242.7 lb (110.1 kg) (claimed)[3] (wet)
Fuel capacity1.66 gal

The fourth generation of the CRF450R introduced a new twin-exhaust to centralize mass. Also new to the fourth generation were air forks.

Fifth generation: 2017–2020[edit]

The 2017 CRF450R offers a new engine design and optional electric start. The air forks were switched out in favor of Showa coil spring forks.

The 2018 offers standard electric start and new engine mount offer most chassis flex.

The 2019 CRF450R features an all-new swing-arm and a launch control setting.

Sixth generation: 2021–present[edit]

New slimmer frame and plastic design, single exhaust ported through center of the upright. The exhaust port is now oval instead of round.

See also[edit]


Sours: https://en.wikipedia.org/wiki/Honda_CRF450R
  1. Transam depot prices
  2. Black sheep rating
  3. Kar98k model
  4. Apmex gift card
  5. My in farsi
Honda's profilation of this bikeA motocrosser becomes the best-selling MX bike by dominating the competition. For 2005, the CRF450R has a new chassis, refined suspension and enhanced engine performance.
General informationModel:Honda CRF 450 RYear:2005Category:Cross / motocrossPrice as new:US$ 6699. MSRP depends on country, taxes, accessories, etc.Rating: 3.5  Check out the detailed rating of off-road capabilities, engine performance, maintenance cost, etc. Compare with any other bike.Engine and transmissionDisplacement:449.0 ccm (27.40 cubic inches)Engine type:Single cylinder, four-strokeCompression:12.0:1Bore x stroke:96.0 x 62.0 mm (3.8 x 2.4 inches)Fuel system:Carburettor. Keihin 40mm flat-slideIgnition:CD with electronic advanceCooling system:LiquidGearbox:5-speedTransmission type,
final drive:
ChainChassis, suspension, brakes and wheelsRake (fork angle):26.8°Trail:109 mm (4.3 inches)Front suspension:47mm inverted Showa cartridge fork with 16-position rebound- and 16-position compression-damping adjustabilityFront wheel travel:315 mm (12.4 inches)Rear suspension:Pro-Link Showa single shock with spring-preload, 17-position rebound-damping adjustability, and compression-damping adjustment separated into low speed (13 positions) and high-speed (3.5 turnsRear wheel travel:318 mm (12.5 inches)Front tire:80/70-21 Rear tire:100/90-19 Front brakes:Single disc. 2-piston calipersDiameter:240 mm (9.4 inches)Rear brakes:Single discDiameter:240 mm (9.4 inches)Physical measures and capacitiesDry weight:99.1 kg (218.5 pounds)Seat height:955 mm (37.6 inches) If adjustable, lowest setting.Ground clearance:340 mm (13.4 inches)Wheelbase:1491 mm (58.7 inches)Fuel capacity:7.19 litres (1.90 US gallons)Other specificationsColor options:RedStarter:KickComments:Model ID: CBF450RUpdate specsReport missing specs or required updates.Further informationInsurance costsCompare US insurance quotes from the nation's top providers.Finance optionsCompare US motorcycle loan quotes from the nation's top providers.Parts finderCMSNL provides online schematics & OEM partsParts and ships to Australia, Austria, Bahamas, Belgium, Canada, China, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hong Kong, Hungary, Iceland, India, Ireland, Italy, Japan, Kuwait, Latvia, Lithuania, Luxembourg, Macedonia, Malta, Montenegro, The Netherlands, New Zealand, Norway, Poland, Portugal, South Africa, Spain, Sweden, Switzerland, Taiwan, Ukraine, United Kingdom, The United States and more. Also check out our overview of motorcycle webshops at Bikez.info.Motocross partsParts and accessories available from Revzilla MotocrossMotocross parts. Ships to the US.MaintenanceFind parts, fluids. filters, maintenance tools and service manuals at Amazon.com.Ask questionsJoin the 05 Honda CRF 450 R discussion group or the general Honda discussion group.Related bikesList related bikes for comparison of specs.

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Crf450r on the dyno

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Crf450r hp 2005

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2005 Honda crf450 tune up

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