Honda CRF450R

Last updated
Honda CRF450R
Honda 2000 CRF450R in the Honda Collection Hall.JPG
Manufacturer Honda Motor Company
Class Motocross
Engine SOHC, multivalve, water-cooled, four-stroke, single

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

Contents

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

Notable changes

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

First Generation CRF450R
Production2002–2004
Predecessor Honda CR series
SuccessorSecond Generation CRF450R
Engine 449 cc (27.4 cu in) liquid-cooled, SOHC four-stroke, single
Bore / stroke 96 mm × 62.1 mm (3.78 in × 2.44 in)
Compression ratio 11.5:1
Transmission 5-speed manual
Suspension Front: 305mm travel
Rear: 315mm travel
Brakes Single disc, 240 mm (9.4 in)
Wheelbase 59.4 in (1,510 mm)
Seat height28.6 in (730 mm)
Weight224.9 lb (102.0 kg)[ citation needed ] (dry)
Fuel capacity2.4 gals

The CRF450R was introduced in 2002. Unlike the competing Yamaha YZ426, 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 78 in (22 mm) in 2004.

Second generation: 2005–2008

Second Generation CRF450R
Production2005–2008
PredecessorFirst Generation CRF450R
SuccessorThird Generation CRF450R
Engine 449 cc (27.4 cu in) liquid-cooled, SOHC, four-stroke, single
Bore / stroke 96 mm × 62.1 mm (3.78 in × 2.44 in)
Compression ratio 12.0:1
Transmission Close-ratio five-speed manual
Suspension Front: 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
Brakes Front: Single 240 mm (9.4 in) disc with twin-piston caliper Rear: Single 240mm disc
Tires Front: 80/100-21 Rear: 110/90-19
Rake, trail 26.79°, 109.4mm
Wheelbase 58.7 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

Third Generation CRF450R
Production2009–2012
PredecessorSecond Generation CRF450R
SuccessorFourth Generation CRF450R
Engine 449 cc (27.4 cu in), liquid-cooled, SOHC, four-stroke, single
Bore / stroke 96 mm × 62.1 mm (3.78 in × 2.44 in)
Transmission Close-ratio five-speed manual
Suspension Front: 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
Brakes Front: Single 240 mm (9.4 in) disc with twin-piston caliper Rear: Single 240mm disc
Tires Front: 80/100-21 Rear: 120/80-19
Rake, trail 26° 52', 114.2mm
Wheelbase 58.7 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

Fourth Generation CRF450R
Production2013–
PredecessorThird Generation CRF450R
Engine 449 cc (27.4 cu in) liquid-cooled, SOHC four-stroke, single
Bore / stroke 96 mm × 62.1 mm (3.78 in × 2.44 in)
Compression ratio 12.5:1
Transmission Close-ratio five-speed manual
Suspension Front: 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
Brakes Front: Single 240 mm (9.4 in) disc with twin-piston caliper Rear: Single 240mm disc
Tires Front: Dunlop MX51FA 80/100-21 Rear: Dunlop MX51 120/80-19
Rake, trail 27° 04', 116mm
Wheelbase 58.7 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

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

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

Related Research Articles

<span class="mw-page-title-main">Outboard motor</span> Self-contained propulsion system for boats

An outboard motor is a propulsion system for boats, consisting of a self-contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom. They are the most common motorised method of propelling small watercraft. As well as providing propulsion, outboards provide steering control, as they are designed to pivot over their mountings and thus control the direction of thrust. The skeg also acts as a rudder when the engine is not running. Unlike inboard motors, outboard motors can be easily removed for storage or repairs.

Yamaha Motor Co., Ltd. is a Japanese multinational manufacturer of motorcycles, marine products such as boats and outboard motors, and other motorized products. The company was established in 1955 upon separation from Yamaha Corporation, and is headquartered in Iwata, Shizuoka, Japan. The company conducts development, production and marketing operations through 109 consolidated subsidiaries as of 2012.

The Honda XR series is a range of four-stroke off-road motorcycles that were designed in Japan but assembled all over the world.

A semi-automatic transmission is a "theoretical" multiple-speed transmission where part of its operation is automated, but the driver's input would be required to launch the vehicle from a standstill and to manually change gears. Semi-automatic transmissions were exclusively used in motorcycles and are based on conventional manual transmissions or sequential manual transmissions, but use an automatic clutch system. But some semi-automatic transmissions have also been based on standard hydraulic automatic transmissions with torque converters and planetary gearsets.

<span class="mw-page-title-main">Honda CBR900RR</span> Sport bike

The Honda CBR900RR, or FireBlade in some countries, is a 900 cc (55 cu in) sport bike, part of the CBR series introduced in 1992 by Honda. It was the first of a series of large-displacement Honda models to carry the RR suffix. The development of the first generation CBR900RR was led by Tadao Baba.

<span class="mw-page-title-main">Kawasaki Ninja ZX-6R</span> Model of Kawasaki motorcycle

The Kawasaki Ninja ZX-6R is a 636 cc class motorcycle in the Ninja sport bike series from the Japanese manufacturer Kawasaki. It was introduced in 1995, and has been constantly updated throughout the years in response to new products from Honda, Suzuki, and Yamaha. The ZX series is what was known as the Ninja line of Kawasaki motorcycles in the 1980s and still carries the name today.

The Honda CR series is a range of off-road motorcycles made by the Honda corporation from 1973 onwards.

<span class="mw-page-title-main">Honda CRF series</span> Motorcycle

The Honda CRF series is a line of four-stroke motocross, trail, and dual sport motorcycles manufactured and marketed by Honda.

<span class="mw-page-title-main">Suzuki GSX-R750</span> Sports motorcycle

The Suzuki GSX-R750 is a sports motorcycle made by Suzuki. It was introduced at the Cologne Motorcycle Show in October 1984 as a motorcycle of the GSX-R series.

<span class="mw-page-title-main">Honda CBR1000RR</span> Superbike

The Honda CBR1000RR, marketed in some countries as the "Fireblade", is a 999 cc (61.0 cu in) liquid-cooled inline four-cylinder superbike, introduced by Honda in 2004 as the 7th generation of the CBR series of motorcycles that began with the CBR900RR in 1990.

The Honda CT series was a group of Honda trail bike motorcycles made since 1964. The CT designation is a slight exception in Honda nomenclature in that "CT" does not indicate a series of mechanically related bikes, but rather a group of different bikes that are all for casual off-road use.

<span class="mw-page-title-main">Yamaha WR450F</span> Type of motorcycle

The Yamaha WR450F is an off-road motorcycle made by Yamaha Motor Company. It currently has a 450 cc (27 cu in) liquid-cooled single-cylinder engine. First offered in 1998 at 400cc, it shared many components and design concepts with the YZ400F motocross model. It is basically the racing YZ450F detuned slightly for more controllable power, with a headlight and lighting coil, softer suspension, a kickstand, lower noise specifications, larger radiators and lower emissions. The WR in the name indicates a wide-ratio gear box common to most enduro or trail bikes and stands in contrast to the close-ratio gearbox essential to a motocross racer. Over the years the WR has benefited from the advances made in the YZ motocross version gaining displacement and advancements such as an aluminum frame and improved suspension. Over much of its life the weight of the WR450F has remained fairly constant ranging from 244 to 249 pounds dry weight.

<span class="mw-page-title-main">Beta (motorcycle manufacturer)</span>

Beta is an Italian motorcycle manufacturer, specialising in off-road motorcycles. Beta are best known for their popular observed trials bikes. In 2005, they launched a range of enduro motorcycles using KTM engines. In 2010 they launched the new RR series, with a new engine made in-house. Beta motorcycles have been used by world trials champions such as Jordi Tarrés, Dougie Lampkin, Albert Cabestany and Enduro riders Steve Holcombe and Brad Freeman. Production in 2018 was expected to be in excess of 20,000 motorcycles, ranging in size from 50 cc to 480 cc.

<span class="mw-page-title-main">Yamaha YZ450F</span> Type of motorcycle

The Yamaha YZ450F is a four-stroke racing motocross bike built by Yamaha Motor Corporation. It was the successor to the previous YZ426F which was discontinued in 2003. It is credited by Cycle World and Dirt Rider magazines as the bike that started the four-stroke dirt bike revolution. The 2006 YZ250F and YZ450F were the first production motorcycles equipped with titanium suspension springs.

The TRX 450R is high performance All-terrain vehicle manufactured by Honda powersports. It was produced from 2004 to 2014.

<span class="mw-page-title-main">Honda Civic (seventh generation)</span> Motor vehicle

The seventh-generation Honda Civic is an automobile produced by Honda from 2000 until 2005. It debuted in September 2000 as a 2001 model. Its exterior dimensions stayed similar to the outgoing predecessor, with interior space significantly increased, bumping up it up to the compact car size designation. A notable feature was the flat rear floor that gave better comfort to the rear seat passengers. This generation abandoned the front double wishbone suspension, used previously from fourth to sixth generations, replacing it with MacPherson struts. This generation was the last to offer 4WD variants.

<span class="mw-page-title-main">Honda CRF250L</span> Dual-Sport Motorcycle

The Honda CRF250L is a dual-sport motorcycle, part of the Honda CRF series, manufactured by Honda for their global market. It was first released in 2012 for the 2013 model year.

<span class="mw-page-title-main">KTM 300</span> Series of off-road motorcycles made by KTM

The KTM 300 is a series of 2-stroke enduro off-road motorcycles made by KTM. They are the Penton-inspired 1984 300 GS, the 300 DMX, the dirt only 300 MXC, European road legal 300 EXC and their current US counterpart the 300 XC (close-ratio) and 300 XC-W respectively. The KTM 300 is designed for difficult off-road conditions. The 300 EXC and the 300 XC-W have a small headlight, speedometer, tail-light and somewhat softer linkless PDS suspension. Starting in 2008 all 300's came with electric start. Since the early 2000s KTM has been offering the XC-W model in a special "Six-Days" limited edition.

<span class="mw-page-title-main">Honda CRF450X</span> Type of motorcycle

The Honda CRF450X is an off-road motorcycle made by Honda Motor Company. It currently has a 450 cc (27 cu in) liquid-cooled single-cylinder engine. First offered in 2005, the CRF450X shares very little with the CRF450R motocrosser.

<span class="mw-page-title-main">Honda CRF450L</span> Dual-sport motorcycle

The Honda CRF450L is a CRF series 450 cc (27 cu in) dual-sport motorcycle made by Honda. It was announced in May 2018 and available from September of the same year. It is the fifth member of CRF dual-sport lineup offered by Honda, after CRF230L, CRF250L, CRF1000L Africa Twin and CRF150L. Unlike other bikes from this lineup, the frame and engine of the CRF450L are directly taken from CRF450R motocross and CRF450X enduro bikes, while the other bikes such as CRF150L and CRF250L do not share anything from its motocross and enduro counterparts.

References