Bore diameter remains unaltered at 79.0 mm, while the stroke has been increased from 45.9 mm to 54.3 mm, boosting displacement from 675 cc to 798 cc. Power output reaches a stunning 148 hp at 13,000 rpm, with the peak torque of 88 Nm arriving at 10,600 rpm. The rev limiter has been set to kick in at 13,500 rpm. A double overhead cam timing system with four titanium valves per cylinder gives awesome performance, especially at high revs. Improvements have also been made to the fuel injectors, which ensure higher flow rates than those on the F3 675.
The three-cylinder engine is an astonishing feat of motorcycle engineering: extremely light and compact (weighing just 52 kg), it features a closed-deck shell-cast crankcase with integral bores. Its water and oil circuits are actually incorporated in the crankcase castings and their respective pumps are located inside the engine, giving clear-cut advantages in terms of both styling and compactness. Further innovations on the 3-cylinder MV Agusta F3 800 include the counter-rotating crankshaft, a technical solution that, prior to the F3 675, was strictly reserved for MotoGP bikes. The aim? To reduce inertia during quick directional changes, enhance engine balance and so make the intrinsic handling qualities of the F3 even better.
The considerably higher performance - bike mass remaining equal – is highlighted by an augmented power-to-weight ratio (1.17 kg/hp) compared to the F3 675. And that's not all: acceleration responsiveness has been remarkably improved under all conditions, as has mid-range power delivery smoothness. These two crucial factors mean off-the-scale road riding pleasure and faster lap times on the track.
A full 148 hp of oomph translates into a top speed of around 269 kph, achieved also by way of a final drive ratio that has been raised from 16/43 to 17/41. Lastly, the mechanical slipper clutch system, designed and developed by MV Agusta, ensures tip-top performance however hard you’re braking.