ATK 604

ATK 604
Manufacturer	ATK
Production	1990 -
Engine	Four stroke single cylinder, DOHC, 4 valves
Compression ratio	9.5:1
Ignition	Electronic
Battery	12V, 11Ah
Transmission	5 Speed
Frame	Nickel plated
Suspension	Front: Telescopic fork Rear: Monoshock
Brakes	Front: Single 260mm disc Rear: Single 220mm disc
Front Tire	80/100-21
Rear Tire	110/100-18
Seat Height	889 mm / 35 in
Weight	129 kg / 284 lbs (wet)
Fuel Capacity	16.5 Liters / 4.4 US gal
Manuals	Service Manual

Engine

The engine was a Air cooled cooled Four stroke single cylinder, DOHC, 4 valves. The engine featured a 9.5:1 compression ratio.

Chassis

It came with a 80/100-21 front tire and a 110/100-18 rear tire. Stopping was achieved via Single 260mm disc in the front and a Single 220mm disc in the rear. The front suspension was a Telescopic fork while the rear was equipped with a Monoshock. The 604 was fitted with a 16.5 Liters / 4.4 US gal fuel tank.

Photos

Overview

ATK 604

Make Model	ATK 604
Year	1990 -
Engine Type	Four stroke single cylinder, DOHC, 4 valves
Displacement	598 cc / 36.5 cu in
Bore X Stroke	97 x 81 mm
Compression	9.5:1
Cooling System	Air cooled
Eshaust	1-into-1. upswept under seat
Induction	40mm Dell'Orto carburetor
Ignition	Electronic
Battery	12V, 11Ah
Starting	Electric or kick
Transmission	5 Speed
Final Drive	Chain
Frame	Nickel plated
Front Suspension	Telescopic fork
Rear Suspension	Monoshock
Front Brakes	Single 260mm disc
Rear Brakes	Single 220mm disc
Front Tire	80/100-21
Rear Tire	110/100-18
Dimensions	Length: 2100 mm / 82.6 in Width: 720 mm / 28.3 in
Ground Clearance	191 mm / 7.5 in
Seat Height	889 mm / 35 in
Wet Weight	129 kg / 284 lbs
Fuel Capacity	16.5 Liters / 4.4 US gal
Colours	Red, Grey, Black, White
Road Test	Dirt Bike Group Test 1990