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13 BRAKE SYSTEM 103

the brake pressure. The regulating process causes a slight pulsing of the hand and foot

brake levers.

ABS warning lamp



must light up after the ignition is switched on and go out after start-

ing off. If it does not go out after starting off or if it lights up while riding, this indicates a

fault in the ABS. In this case, the ABS is no longer enabled and the wheels may lock during

braking. The brake system itself stays functional; only ABS control is not available.

The ABS warning lamp may also light up if the rotating speeds of the front and rear wheels

differ greatly under extreme riding conditions, for example when making wheelies or if the

rear wheel spins. This causes the ABS to switch off.

To reenable the ABS, the vehicle must be stopped and the ignition switched off. The ABS

is reenabled when the vehicle is switched on again. The ABS warning lamp goes out when

you start off.

Button



can be used to switch ABS off manually (see Starting).

13.2 Checking the brake discs

Warning

Danger of accidents Reduced braking efficiency due to worn brake disc(s).

– Change the worn brake disc(s) without delay. (Your authorized KTM workshop will be glad to help.)

400480-10

– Check the thickness of the front and rear brake discs at several places on the disk to

see if it conforms to measurement



Info

Wear reduces the thickness of the brake disc in area



of the brake disc.

Brake discs - wear limit

Front 4.5 mm (0.177 in)

Rear 3.6 mm (0.142 in)

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KTM 2016 RC 390 Specifications

General

Displacement	373.2 cc
Bore x Stroke	89 mm x 60 mm
Compression Ratio	12.6:1
Power	32 kW (44 hp) @ 9, 500 rpm
Torque	35 Nm @ 7, 250 rpm
Transmission	6-speed
Rear Suspension	WP monoshock
Rear Brake	230 mm disc, single-piston caliper
Front Tire	110/70 ZR17
Rear Tire	150/60 ZR17
Seat Height	820 mm
Fuel Tank Capacity	10 liters
Dry Weight	147 kg
Ground Clearance	178.5 mm
Engine Type	Single-cylinder, 4-stroke
Fuel System	Electronic Fuel Injection
Front Suspension	WP USD 43 mm
ABS	Bosch 9MB Two-Channel ABS
Frame	Steel trellis frame
Front Brake	300 mm disc, 4-piston radial caliper