Drivetrain. The TRX450R uses a five-speed manual transmission and an automatic clutch system handled by a 520 O-ring chain. This powertrain combo, coupled with a lower riding position, improved exhaust system, and new cylinder head porting features with lightweight Nikasil lining, makes the TRX450R racing and trail-friendly.. 2005 Honda TRX™ 450R Specifications Engine: Engine configuration Single-Cylinder How many cylinders 1 Types of power cycles Four-stroke Type of cooling system Liquid Valves 4 Valves Per Cylinder 4 Valve types and configurations Single Overhead Camshaft Bore (millimeters/inches) 94 / 3.7 Stroke (millimeters/inches) 64.8 / 2.55 Engine displacement (cubic centimeters/cubic inches) 450 / 27.5.
Honda TRX450R Dimensions, Aerodynamics and weight: Frame type - Seat details - Wheelbase: 1,275 mm (50.2 inches) Length: 1,862 mm (73.3 inches) Width. Honda TRX 450r In-Depth Guide Introducing in the red corner, the Honda TRX 450R is a 39 horsepower sport class all-terrain vehicle(ATV) manufactured by Honda Motors Co. It weighs 350 pounds and has a top speed of 74MPH in stock condition. Specs include a 4-stroke liquid cooled 450cc engine, a seat height of 32.8 inches and enough performance parts to make owners happy. Not bad for an ATV with.