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HONDA TRX 450 SERIES

Black Wheels became an option with the Orange Frame/White plastics.

Style of and reposition of the auto decompression feature to other side of cam carrier.

New Black/Blue color joins White on the electric start version.

New White and Black/Flame colors on the electric start version.

Extending the swing arm will affect the front end.

Front knuckles changed making the front end "push".

Head light changed to a more "race-derived look".

Rear suspension travel is extended from 9 inches (230 mm) to 9.3 inches (240 mm).

The "bucking" should be able to be tuned out with the correct (for the riders weight) spring.

Swing arm extended to help alleviate the "bucking" of the previous models.

New transmission ratios designed for racing applications and trail use.

Maximum engine rpm is raised from 9800 to 9850.

Engine bore increased to 96 mm and stroke lowered to 62 mm.

Engine compression raised from 10.5:1 to 12:1.

Electric start models added along with kick start models.

Black plastics color scheme option added.

Single hdraulic 19 mm disc with single-piston caliperĢ007: 450R: Red, TRX450ER Red, White, Black/Flame. Pro-Link with single Showa shock featuring adjustable spring preload, rebound and compression dampingĭual hydraulic 17 mm discs with twin-piston calipers Independent double-wishbone with Showa shocks, featuring adjustable spring preload, rebound and compression damping Keihin 40 mm flat-slide with trottle position sensor (TPS)

HONDA TRX 450 SERIES

The 450R would also compete in the Grand National Cross Country series although Honda would not sponsor any riders.Īll specifications are manufacturer-claimed.Ĥ-Stroke, Liquid-Cooled, SOHC, 4 Valve Cylinder Head, Single-Cylinder In the 2004 National MX races, the 450R would place 3rd overall.ĭesert racing, and track racing would not be the only events the 450R would race in. With an average speed of 37 mph (60 km/h). The 450R was first across the line in the ATV class with a total time of 22 hours, 27 minutes, and 24 seconds. The 450R was off to a good start even before its public launch. The 450r's first national race would be the 2003 Baja 1000. The sponsored Honda team would compete in the ATVA MX and TT Nationals in the Pro-Production class. Honda's first sponsored rider on the new 450r would be Tim Farr. The 450R would be the first factory sponsored bike out of any of the other atv manufacturers. The first generation engine had a 10.5:1 compression ratio while the second generation had a 12:1 compression ratio.īecause for many years the four-stroke class displacement limit was 440 cubic centimeters, many racing sanctions bumped this number up to allow the new 450 cc bikes and ATVs to compete.Īlong with the introduction of the TRX 450R, Honda announced, after 17 years, it would once again support factory sponsored racing. This increased the power from about 33 horsepower (25 kW) in the first generation to over 41 horsepower (31 kW) in the second. In addition, Honda changed the carburetor from a 42 mm Keihin butterfly type to a 40 mm Keihin FCR. This included a more aggressive cam profile, a larger bore with a shortened stroke, a new, short skirt piston and titanium rather than steel valves. In 2006, Honda overhauled the TRX450R engine to make it more similar to its motorcycle variant. In 20, the only interchangeable part between the ATV and motorcycle engines was the camshaft. Honda claims that it designed the TRX450R engine to produce more torque so that the engine was more suited for ATV purposes. Initially, many people were disappointed because the first TRX450R was very weak compared to the CRF450R. While the CRF450R and the TRX450R share the same displacement number, there are very few of the same components between the two engines.