Adjust the fitLowering kit, bar risers, rearsets — see how mods change your posture›
What-if only — simulates common aftermarket changes, not the stock bike.
Seat height820 mm
Forward lean18°
Knee angle76°
Hip angle103°
Data confidence: HighWhoever opens it sees your size and fit adjustments on this bike.
The Aprilia RS 660 (2021+) has a 820 mm (32.3 in) seat height and a 1370 mm wheelbase. For an average 175 cm rider that works out to about 18° of forward lean with the knees bent to about 76°, and that rider can get the balls of both feet down. See the riding-position diagram above, and enter your own height and inseam to see your fit. The Aprilia RS 660 (2021+) is LAMS-approved (learner-legal to ride in Australia).
The Aprilia RS 660 (2021+) in the real world
The RS 660 is proof that a sport bike can look aggressive and still be liveable. Its clip-ons sit above the top triple clamp, so despite the racy fairing the lean is moderate and the cockpit roomy — reviewers consistently describe it as sporty but daily-able, not a wrists-down supersport. It’s the middleweight faired Aprilia for riders who want genuine sporting intent without signing up for a committed crouch every time they ride.
The 820 mm seat is on the tall side of the class, though a slim front section takes some of the sting out for shorter riders. Australia gets an RS 660 LAMS version with the same geometry, so learners get the same relatively relaxed sport position as the full-power bike. The upshot is a bike that flatters a wide range of riders: roomy enough for tall ones, approachable enough that the sporty stance doesn’t punish you on a commute.
Who the RS 660 fits
A sport bike you can actually commute on — clip-ons above the triple clamp keep the lean moderate and the wrist load manageable.
The 820 mm seat is tallish; shorter riders benefit from the narrow front but should still check reach carefully.
A roomy cockpit suits taller riders better than most middleweight sports bikes — knees aren’t jammed into the tank.
The LAMS version shares its geometry with the full-power bike, so the fit is identical when you derestrict.
Common fit & comfort changes
Comfort seat — The stock seat firms up over distance; a reshaped seat helps longer rides and can add height to open a tall rider’s knee angle.
Clip-on risers — A small lift softens the lean further for riders using it as a daily, though many find the stock position already road-friendly.
Tank grip pads — Knee grip on the tank offloads your wrists under hard braking; cheap and effective on any leant-forward bike.
Most of these can be previewed on your own body with the “Adjust the fit” sliders in the simulator above.
The Aprilia RS 660 (2021+) has a seat height of 820 mm (32.3 inches).
Can a 175 cm rider flat-foot the Aprilia RS 660 (2021+)?
On its 820 mm seat, a 175 cm rider (about 80 cm inseam) can typically get the balls of both feet down on the Aprilia RS 660 (2021+). Taller or shorter riders differ — use the simulator to check your own ground reach.
What is the riding position of the Aprilia RS 660 (2021+)?
For an average 175 cm rider, the Aprilia RS 660 (2021+) riding position (also called the seating position) works out to about 18° of forward lean with a 76° knee bend. See the riding-position diagram to judge the posture for your own body size.
Is the Aprilia RS 660 (2021+) LAMS-approved?
Yes — the Aprilia RS 660 (2021+) is LAMS-approved, so it is legal for learner and provisional riders in Australia.
Is the Aprilia RS 660 comfortable for everyday riding?
More than its looks suggest. The clip-ons mount above the triple clamp, so the lean is moderate and the cockpit roomy — most riders find it genuinely commutable, unlike a hard-core supersport.
Is the RS 660 too tall for shorter riders?
At 820 mm the seat is on the tall side, so riders under about 170 cm should expect tiptoe stops, eased slightly by the narrow front. Enter your inseam above to see your own ground reach.
Seat height & wheelbase come straight from the manufacturer’s published specs, verified across the maker’s site, media reviews and spec databases.
Handlebar & footpeg positions aren’t published by any manufacturer. Where a true side-profile photo exists, we mark five reference points on it (front & rear axle, seat, grip, peg) and convert pixels to millimetres using the known wheelbase as the scale. Where it doesn’t, we research the grip and peg heights and estimate the horizontal reach from class-typical geometry.
Every result is cross-checked against how reviewers describe the bike’s posture (upright / sporty / committed), and each bike page carries a data-confidence badge so you can see how solid its numbers are.
The drawing is a clean schematic — one shared template per bike type (naked, sport, cruiser, adventure, touring, dirt), anchored to each bike’s real seat, grip and peg coordinates — so you compare riding positions, not paint jobs.
Your figure is a stick model built from your height and inseam using standard body-proportion ratios, then posed by inverse kinematics — hips on the seat, hands on the bars, feet on the pegs — with the same posture solver for every bike.
Bottom line: seat height & wheelbase are hard data; handlebar/footpeg geometry and ground reach are calibrated estimates (see each bike’s data-confidence badge). Always sit on the real bike before you buy.