KTM 690 SMC R User Manual

22 TECHNICAL DATA 169
22.1 Engine
Design 1-cylinder 4-stroke engine, water-cooled
Displacement 690 cm³ (42.11 cu in)
Stroke 84.5 mm (3.327 in)
Bore 102 mm (4.02 in)
Compression ratio 12.6:1
Idle speed
Coolant temperature: ≥ 70 °C (≥ 158 °F) 1,550… 1,650 rpm
Control OHC, 4 valves controlled via rocker arm, chain drive
Valve diameter, intake 40 mm (1.57 in)
Valve diameter, exhaust 34 mm (1.34 in)
Valve play, cold 0.07… 0.13 mm (0.0028… 0.0051 in)
Crankshaft bearing 2 roller bearings
Conrod bearing Needle bearing
Piston pin bearing Piston pin with DLC coating
Pistons Forged light alloy
Piston rings 1 L-ring, 1 tapered compression piston ring, 1 oil scraper ring
Engine lubrication Semi-dry sump lubrication system with two rotor pumps
Primary transmission 36:79
Clutch APTC™ antihopping clutch in oil bath/hydraulically operated
Transmission 6-gear, claw shifted
Transmission ratio
1st gear 14:35
2nd gear 16:28

KTM 690 SMC R Specifications

General

Engine Type	Single-cylinder, 4-stroke
Bore x Stroke	105 mm x 80 mm
Compression Ratio	12.7:1
Starter	Electric starter
Transmission	6-speed
Fuel System	Electronic Fuel Injection
Cooling System	Liquid cooled
Frame	Chromium-Molybdenum steel trellis frame, powder coated
Front Wheel	3.50 x 17"
Rear Wheel	5.00 x 17"
Front Tire	120/70 ZR 17
Rear Tire	160/60 ZR 17
Seat Height	890 mm
Power	55 kW (74 hp)
Torque	73.5 Nm
Front Suspension	WP APEX 48
Rear Suspension	WP APEX with Pro-Lever linkage
Front Brake	Single 320 mm disc, 4-piston caliper
Rear Brake	Single 240 mm disc, 1-piston caliper
ABS	Bosch 9.1 MP (lean angle sensitive)
Fuel Tank Capacity	13.5 liters
Dry Weight	147 kg