The KTM 640 LC4 Adventure R motorcycle was produced in 2001-02 and had a four-stroke, single cylinder engine with a capacity of 624.6 cc. It had a compression ratio of 11.0:1 and was liquid cooled, with a Mikuni BST 40 induction system and a contactless DC-CDI ignition. The bike had a maximum power output of 35.7 kW/49 hp at 7500 rpm and maximum torque of 52 Nm/38.4 lb-ft at 5500 rpm. The transmission was a five-speed, claw-shifted system with a wet, multiplate clutch. The primary drive ratio was 30:81, and the final drive was a chain with a ratio of 16:40. The central chrome-moly-steel frame was supported by 50 mm WP upside-down forks and a WP monoshock. The front and rear brakes were single 300mm and 220mm discs, respectively. The front and rear tires were 90/90-21 and 140/80-18 Enduro 3, respectively, and the bike had a steering head angle of 62.5o. The wheelbase measured 1510 mm, and the ground clearance was 320 mm. The bike’s dry weight was 154 kg, and the fuel capacity was 28 L with a reserve of 3.8 L.
Technical specifications:
Make Model: KTM 640 LC4 Adventure
| Year | 2001 – 02 |
|---|---|
| Engine | Four stroke, single Cylinder. SOHC, 4 Valve per cylinder, |
| Capacity | 624.6 cc / 38.1 cu in |
| Bore x Stroke | 101 x 78 mm |
| Compression Ratio | 11.0:1 |
| Cooling System | Liquid cooled |
| Induction | Mikuni BST 40 |
| Ignition | Contactless DC-CDI ignition with digital advanced system, KOKUSAN |
| Spark Plug | NGK DPR8 EA-9 |
| Battery | 12V 8Ah, maintenance free |
| Starting | Kick & electric |
| Max Power | 35.7 kW / 49 hp @ 7500 rpm |
| Max Torque | 52 Nm / 5.3 kgf-m / 38.4 lb-ft @ 5500 rpm |
| Clutch | Wet, multiplate |
| Transmission | 5 Speed, claw shifted |
| Primary Drive Ratio | 30:81 |
| Gear Ratios | 1st 14:35 / 2nd 15:24 / 3rd 18:21 / 4th 20:19 / 5th 22:18 |
| Final Drive Ratio | 16:40 |
| Final Drive | Chain |
| Frame | Central chrome-moly-steel frame |
| Front Suspension | 50 mm WP upside-down forks |
| Front Wheel Travel | 300 mm / 11.8 in |
| Rear Suspension | WP monoshock |
| Rear Wheel Travel | 320 mm / 12.6 in |
| Front Brakes | Single 300mm disc, 4piston floating caliper |
| Rear Brakes | Single 220mm disc, 1 piston floating caliper |
| Front Tyre | 90/90 – 21 54S Enduro 3 |
| Rear Tyre | 140/80 – 18 70R Enduro 3 |
| Steering Head Angle | 62.5o |
| Wheelbase | 1510 mm / 59.4 in |
| Ground Clearance | 320 mm / 12.6 in |
| Seat Height | 945 mm / 37.2 in |
| Dry Weight | 154 kg / 340 lbs |
| GVWR | 380 kg / 839 lbs |
| Fuel Capacity | 28 L / 7.4 US gal / 6.2 Imp gal |
| Fuel Reserve | 3.8 L / 1.0 US gal / 0.8 Imp gal |
| Manual | blackbears.ru |
