KTM RC 390 2018 User Manual

TECHNICAL DATA 23
233
23.1 Engine
Design 1-cylinder 4-stroke engine, water-cooled
Displacement 373 cm³ (22.76 cu in)
Stroke 60 mm (2.36 in)
Bore 89 mm (3.5 in)
Compression ratio 12.6:1
Control DOHC, 4 valves controlled via cam lever, chain drive
Valve diameter, intake 36 mm (1.42 in)
Valve diameter, exhaust 29 mm (1.14 in)
Valve clearance, intake, cold 0.10 … 0.15 mm (0.0039 … 0.0059 in)
Valve clearance, exhaust, cold 0.15 … 0.20 mm (0.0059 … 0.0079 in)
Crankshaft bearing 2 slide bearings
Conrod bearing Sleeve bearing
Pistons Forged light alloy
Piston rings 1 compression ring, 1 tapered compression piston
ring, 1 oil scraper ring
Engine lubrication Pressure circulation lubrication with two rotary pumps
Primary transmission 30:80
Clutch Slipper clutch in oil bath/mechanically operated
Transmission 6-gear, claw shifted
Transmission ratio

KTM RC 390 2018 Specifications

General

Displacement	373.2 cc
Bore x Stroke	89 mm x 60 mm
Compression Ratio	12.6:1
Torque	36 Nm @ 7, 000 rpm
Transmission	6-speed
Cooling	Liquid cooled
Rear Suspension	WP monoshock
Front Tire	110/70 ZR17
Rear Tire	150/60 ZR17
Seat Height	820 mm
Ground Clearance	178.5 mm
Fuel Tank Capacity	10 liters
Dry Weight	147 kg
Engine Type	Single Cylinder, 4-Stroke
Power	43 hp (32 kW) @ 9, 000 rpm
Fuel System	Electronic Fuel Injection
Frame	Steel trellis frame
Front Suspension	WP upside-down Ø 43 mm
Front Brake	320 mm disc
Rear Brake	230 mm disc, single-piston caliper
ABS	Two-channel Bosch 9MB ABS