2005 KTM 450 EXC, Top performance paired with loads of grunt packed into the best enduro chassis in the world: a combination that puts it right at the front in every comparison test. As on all Racing models an electric starter goes without saying. Engine Engine single cylinder, 4-stroke Displacement (cc) 447.92 Bore x stroke (mm) 89 x 72 (3.5 x 2.83 ) Compression ratio 11:1 Starter kick-starter and E-starter / 4 Ah Transmission 6 gears Carburetor Keihin MX FCR 39 Control 4 V / OHC with roller rocker lever Lubrication pressure lubrication with 2 Eaton pumps Transmission lubrication - Engine oil 1.2 l Motorex Power Synt 4T 10W50 Primary drive 33 : 76 Final drive X-Ring chain 5/8 x 1/4 Cooling liquid cooled Clutch wet multi-disc clutch, operated hydraulically Ignition Kokusan digital 4K-3B Top Chassis Frame chromium molybdenum Subframe aluminum Handlebar tapered Magura X 28 mm (1.10 ) Front suspension WP-USD 48 mm (1.89 ) Rear suspension WP-PDS-shock absorber Suspension travel front/rear 300 / 335 mm (11.81/13.19 ) Front / Rear brakes disc brakes 260 / 220 mm (10.24/8.66 ) Front / rear rims 1.60 x 21 2.15 x 18 Excel Front / rear tires 90/90-21 140/80-18 Transmission 15:45 Main silencer aluminum Steering head angle 63.50 Wheel caster 112 mm (4.41 ) Wheelbase 1481110 mm (58.3110.39 ) Ground clearance (unloaded) 380 mm (14.96 ) Seat height 925 mm (36.42 ) Fuel capacity approx. 8 litres (2.11 gal) Weight (ready to race, no fuel) approx. 113.5 kg (250.3 lbs) USA Front / rear tires 80/100-21 110/100-18 Transmission 14:50 Weight (ready to race, no fuel)