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Honda's new family of quads

2006-02-06 09:44

The TRX450R

For Dad, there is the meaner, leaner and faster TRX450R racing machine. Mom can have a go on the TRX250EX and little Timmy can swing his leg over the new TRX90.

Now with electric start, Honda has taken the TRX450R to a new level.

The engine features new bore and stroke dimensions identical to those in the CRF450R and 450X motorcycles.

The 450cc, 4-stroke comes mated to a 5-speed manual transmission.

There is a shorter skirt piston (much like those on the CRF450) and the compression ratio has taken a leap from 10.5:1 to 12:1.

It now redlines at 9 850 r/min and with a racing kit that figure is pushed up to 10 000 r/min.

A new air box has improved airflow through enhanced shaping and venting with a new air filter offering 1.4 times more surface area than before.

On the track the quad has a closer-ratio gearbox, and the final drive and primary drive feature lower ratios. This should make the bike faster on the dirt.

The swingarm has been extended by 15mm and comes fitted to stronger A-arms. Still, the wheelbase remains unchanged.

Up front a new camber and toe-in setting gives the bike sharper handling and the strengthened hubs should give it better cornering stability.

Suspension at the front is an independent double-wishbone with fully adjustable Showa dampers that offers 215mm of travel.

The rear is a Pro-Link with fully adjustable single Showa damper and 237mm of travel.

Dual shocks feature aluminum spring preload adjusters, making it about 225 grams lighter than before.

Not only lighter, the bike also sits 8mm closer to the ground - lowering the center of gravity.

Stopping will be just as important with the bike featuring a 174mm dual hydraulic disc with dual-piston calipers up front and a 190mm hydraulic disc with single-piston caliper at the back.

Updates on the TRX250EX include new styling, new front and rear suspension and a nifty SportClutch.

SportClutch gives the rider a choice between either a manual 'box or enables you to experience full manual clutch actuation without the risk of stalling when coming to a stop.

This should make it perfect for first-timers to four-wheeled biking.

Power is by an air-cooled, 229cc motor.

New 27mm front dampers along with a new 32mm rear damper should improve the bike?s handling and rider comfort.

As for the TRX90, it gets new sleek styling, an electric start and improved suspension.

It still has the same 86cc, 4-stroke motor thumping under the new flared wheel arches and low 660mm seat.

The suspension has been improved with independent units that feature a pair of bump-absorbing dampers.

It gets a single-damper unit at the back.


  • TRX450R: R55 350
  • TRX400EX: R48 500
  • TRX300EX: R37 500
  • TRX250EX: R34 999
  • TRX90: R21 000

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