RR 4T 390

RR 4t My 19 RIGHT LO RESRR 4t 390 My 19 LEFT LO RES

Delivering an excellent handling-power mix, its winning feature is outstanding traction. The engine is very unique in that it feels lighter yet still provides added torque and power.

Technical data

Frame Molybdenum steel with double cradle split above the exhaust port
Wheelbase 1490mm
Max length 2180mm
Max width 807mm
Max height 1270mm
Seat height 940mm
Ground clearance 320mm
Footrest height 413mm
Dry weight 109 kg (front 52.5kg, rear 56.5kg)
Fuel tank capacity 8.0l
Reserve 2.0l
Cooling system capacity 1.4l
Front suspension Hydraulic USD fork with ø 48 mm shaft
Rear suspension Monoshock with progressive compound lever
Shock absorber stroke 135mm
Front wheel travel 295mm
Rear wheel travel 290mm
Front brake Wave disc ø260 mm and double-piston floating caliper
Rear brake Wave disc ø240 mm and single-piston floating caliper
Front rim 21 x 1.6 - 36 holes
Rear rim 18 x 2.15 - 36 holes
Front tyre 90/90 - 21
Rear tyre 140/80 - 18
Type Single cylinder, 4-stroke, liquid-cooled
Bore 88mm
Stroke 63.4mm
Displacement 385.6cc
Compression ratio 12.48:1
Valve train DOHC finger follower/4 titanium valve
Starter Electric starter
Ignition AC Kokusan
Spark Plug NGK LKAR 8A-9
Lubrication 2 Oil pumps
Fuel system Synerject dual electronic injection
Throttle body  ø42mm - synerject
Clutch wet multi-disc clutch
Primary drive Z. 28/76
Transmission 6 Gears
Final transmission chain
Engine oil SAE 10W/50 0.8l +SAE10w/40 0.8l
DMC Firewall is developed by Dean Marshall Consultancy Ltd