KTM Motorcycles
     
KTM SX Models 1998


ENGINE  125SX 250SX 380SX
Displacement 124.8cc 248.7cc 368cc
Bore/Stroke 54.25 x 54 mm 67.5 x 69.5 mm 78 x 77 mm
Transmission 6 gears SX 5 gears SX 5 gears SX
Final Drive 13:50 14:50 14:50
Chain 5/8 x 1/4" 5/8 x 1/4" 5/8 x1/4"
Fuel Capacity 1.98 gal 1.98 gal 1.98 gal
Fuel 92+Oct. 32:1unleaded 92+Oct. 32:1 unleaded 92+Oct. 32:1
Carburetor Keihin PWK 39 mm Keihin PWK 38 mm Keihin PWK 38mm
Clutch wet clutch/hyd. wet clutch/mech wet clutch/mech
Igniton Kokusan digital 2K-1 Kokusan digital 2K-1 Kokusan digital 2K-1
CHASSIS 125SX 250SX 380SX
Mainframe chrome-moly chrome-moly chrome-moly
Subframe aluminum aluminum aluminum
Fork Marzocchi Magnum 45 mm WP-Extreme     50mm WP-Extreme 50mm
Shock WP-PDS-rear         shock WP-PDS-rear   shock WP-PDS-rear shock
Wheel Travel front/rear 300/340 mm 11.81/13.39 in 300/340 mm 11.81/13.39 in 300/340 mm 11.81/13.39 in
Front Rim 1.60 - 21" Excel 1.60 - 21" Excel 1.60 - 21" Excel
Rear Rim 2.15 - 19" Excel 2.15 - 19" Excel 2.15 - 19" Excel
Front Tire Bridgestone  M77 80/100-21" Bridgestone M77 80/100-21" Bridgestone M77 80/100-21"
Rear Tire Bridgestone M78 100/90-19" Bridgeston M78 110/90-19" Bridgestone M78 110/90-19"
Front Brake disc 260 mm/10.24in disc 260 mm/10.24in disc 260 mm/10.24in
Rear Brake disc 220 mm/8.66in disc 220mm/8.66in disc 220mm/8.66in
Wheelbase 1455 +/- 10mm
57.3 +/- 0.4 in
1481 +/- 10mm 
58.35 +/- 0.4 in
1481 +/- 10mm 
58.35 +/- 0.4 in
Seat Height 925mm/36.4in 925mm/36.4in 925mm/36.4in
Ground Clearance 380mm/14.96in 385mm/15.16in 385/15.16in
Weight 89.5 kg                 196.9 lb 98.5 kg                 216.7 lb 98.5 kg               216.7 lb
     

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