Aprilia RS 660 Setup

Every change you can make to the RS 660’s suspension falls into one of the circuits below. Knowing which adjusters you actually have is the first step — there’s no point chasing a high-speed compression fix on a bike that only offers preload.

Whatever the RS 660 offers, the order of operations is always the same. Start from the OEM clicker baseline (count every adjuster from fully closed), set tyre pressures, then set sag before you touch a single damping clicker.

• Tyre pressure first.It moves the chassis more than any clicker. Start from a known cold target — see the track day tyre pressure guide.
• Then sag.Aim for roughly 30–38 mm front and 25–30 mm rear rider sag on a sportbike, then verify against the manual. Full method in the sag guide.
• Then one clicker at a time. Change one thing, ride the same reference, log it. The full loop is in the suspension tuning guide.

On the RS 660, as on any bike, diagnose by the corner phase where the problem shows up — not the symptom alone. A few of the most common ones:

• Running wide — entry is usually front dive; exit is usually rear squat.
• Chatter under braking — tyre pressure, sag, then front compression and rebound.
• Tearing tyres — read the wear pattern before you blame the suspension.