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Honda ATV : TRX450R / Sportrax 450R ATVs

Powerful purpose-built Honda ATV four-stroke 450cc liquid-cooled four-valve Unicam engine is based on the award-winning CRF 450R motocrosser's.
Compact, lightweight engine designed specifically for ATV usage is worthy of its CRF heritage.
Unicam valve train provides the light weight of a compact single-cam drive and the optimum combustion chamber shape for maximum power at all engine rpm.
Unicam valve train features a carburized single camshaft that directly actuates two 36mm steel intake valves. The camshaft exhaust lobe actuates two 30mm steel exhaust valves via a forked, low-friction roller rocker-arm.
Lightweight, compact, internal auto decompressor provides superb cold-starting and hot-starting operation.
Engine incorporates ATV-type forward kickstarting for ease of starting and light weight.
Crankshaft is made of high-strength, low-carbon steel with carburized main journals for maximum durability at sustained high-rpm operation.
Cylinder head cover is made of magnesium to reduce engine weight.
Cast 10.5:1 compression piston features 28.4mm piston skirt length, with three piston rings for added durability.

HONDA ATV MODEL
Sportrax® 450R / TRX450R
ENGINE
Liquid-cooled, single-cylinder, 4-Stroke, nicam; 4-valve
DISPLACEMENT
450cc
BORE X STROKE
94.0mm x 64.8mm
CARBURETION
10.5:1
STARTER
Keihin 42.0mm w/throttle position sensor (TPS)
CLUTCH
Forward kick
TRANSMISSION
5-speed
FINAL DRIVE
O-ring sealed chain
IGNITION
CD with electronic advance
SUSPENSION
Front: Independent double-wishbone w/Showa shocks, featuring adjustable spring preload, rebound & compression damping; 8.4-inch travel
Rear: Pro-Link w/single Showa shock featuring adjustable spring preload, rebound & compression damping; 9.0-inch trav
BRAKES
Front: Dual hydraulic 174.0mm discs w/twin-piston calipers
Rear: Single hydraulic 190.0mm disc w/single-piston caliper
TIRES
Front: 22 x 7-10 knobby radial
Rear: 20 x 10-9 knobby radial
LENGTH
72.6 in.
WIDTH
46.3 in.
HEIGHT
43.6 in.
WHEELBASE
49.2 in.
SEAT HEIGHT
32.6 in.
GROUND CLEARANCE
4.2 in.
DRY WEIGHT
350 lbs.
FUEL CAPACITY
3.2 gal.
COLORS
Red


 

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