Engine Type	Single cylinder two-stroke, liquid cooled. Light alloy cylinder with Gilnisil coating. Reed intake in crankcase. Balancing countershaft.
Bore and Stroke	40.3 x 39 mm.
Displacement	49.7 cc
Compression Ratio	12 ± 0.5:1
Carburettor	Dell'Orto PHBN12 - HS
Ignition	Electronic, capacitor discharge
Starting	Electric starter
Generator	12V - 105 W
Lubrication	Separate mixing with variable displacement volumetric pump
Clutch	Multiple disks in oil bath
Gearbox	6 speed
Primary drive	Helical gears
Final drive	Chain
Exhaust	Catalysed
Frame	Sloping twin-spar in cast aluminium with thin walled structural shell and cross rib reinforcement
Front suspension	Aprilia ø 35 mm central pin hydraulic telescopic fork, wheel travel 110 mm
Rear suspension	Double member swing-arm in high strength steel with hydraulic monoshock, wheel travel 120 mm
Brakes	Front: stainless steel disk, Ø 280 mm, double piston calliper, Ø 25 mm pistons Rear: stainless steel disk, Ø 220 mm, single piston calliper, Ø 28 mm piston
Wheels	Five spoke aluminium alloy with profile for tubeless tyres; front: 2.50 x 17"; rear: 3.00 x 17"
Tyres	Tubeless radials; front: 90/80 ZR 17", rear: 110/80 ZR 17"
Dimensions	Maximum length 1,920 mm Maximum width at handlebars 675 mm Maximum height at windshield 1,155 mm Seat height 810 mm Wheelbase 1,280 mm
Tank capacity	13 litres, including (2.6 litre reserve)
Colours	SBK Replica; GP Replica