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3 or 4 psi
yes
Definitely the Polaris 525, Honda Trx 450 are slow compared to them. A stock Polaris 525 wins a piped trx 450 by a small margin.
The 2003 Honda TRX 450 is a model of ATV. The serial number is located on the chassis between the two front tires.
Proper tire pressure is found embossed on the sidewall of the tire itself. Unfortunatly it is not on the tire, the tire says to check owners manual for correct tire pressure, which is often the case with low pressure tires. I have a Clymer manual and it has a misprint showing the lug nuts for the tire pressure...very frustrating!!
If you are going by top speed, just barely. Raptor 76 mph to TRX 450 73 mph.
trx wins.
The engine displacement is 450 cc's.
The specifications of the Honda TRX 450R can be found various places online. Try the forums of your favorite ATV website, or even the Wikipedia page for the TRX 450.
2.2 - 2.6 psi
20 km/h.
i say 80 to 85