Motocross SX - 450 SX
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Which one of us wouldn’t gladly have a MX1-Racer in the garage? With the KTM 450 SX you are damn close to doing just that. It is the basis of our racing successes in the top class and with its agile handling and linear engine characteristics, it’s very convincing. Modern styling, noble details and high-quality components make it clear once more: the 450 SX is the one to win on.
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| Chassis |
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| Frame |
central double-cradle-type 25 CrMo4 |
| Subframe |
aluminum 7020 |
| Handlebar |
Renthal Ø 28/22 mm (1.10/0.87") |
| Front suspension |
WP-USD Ø 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 |
| Front / rear rims |
1.60 x 21"; 2.15 x 19" |
| Front / rear tires |
80/100-21"; 110/90-19" |
| Chain |
aluminum |
| Main silencer |
63.5° |
| Steering head angle |
112 mm (4.41") |
| Wheelbase |
1481±10 mm (58.31±0.39") |
| Ground clearance (unloaded) |
380mm (15") |
| Seat height |
925 mm (36.42") |
| Fuel capacity |
approx. 7 litres (1.85 gal) |
| Weight (ready to race, no fuel) |
approx. 105.2 kg (231.93 lbs) |
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| Engine |
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| Engine Type |
single cylinder, 4-stroke |
| Displacement |
449.39 cc |
| Bore / stroke |
95 / 63.4 mm (2.61 / 2.83") |
| Compression ratio |
12 : 1 |
| Starter |
kick starter |
| Transmission |
4 gears |
| Carburetor |
Keihin MX FCR 41 |
| Power Valve Control |
4 V / OHC with roller rocker lever |
| Lubrication |
pressure lubrication with 2 Eaton pumps |
| Transmission lubrication |
- |
| Engine oil |
1,2l Motorex Power Synt 4T 10W-50 |
| Primary ratio |
33 : 76 |
| Final drive |
14 : 52 |
| Cooling |
liquid cooled |
| Clutch |
wet multi-disc clutch, operated hydraulically |
| Ignition |
Kokusan digital 4K-3A |
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View KTM accessories | View the KTM website >>
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