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Aprilia

RS 660 2021 - Damp

Tuned for Red Bull Ring - adds: asphalt, fast

Aprilia RS 660 2021 - 75 kg, Intermediate, Neutral, Damp - Red Bull Ring

Set this first

Most important change

Shock: Rebound

Stock value
5 clicks
Recommended
7 clicks
Change
2 clicks softer than stock

clicks out from fully closed

Reason: condition Damp - Red Bull Ring

How to test it: Change Rebound only, nothing else. Then ride the same section or the same number of laps as before and watch whether exactly the behaviour that bothers you changes. If it gets worse or less settled, put the value back.

Key values

13 confirmed settings available.

Source

Released reference setup, editorially reviewed · Moderately documented

Referenced (not linked):
  • Aprilia RS660 official technical datasheet (storeusa.aprilia.com) + OEM chain/sprocket spec

Last reviewed: 30 Jul 2026

All recommended changes

In order, biggest deviation from the stock value first. Take them one at a time.

  1. Shock: Rebound2 clicks softer than stock

    5 clicks7 clicksclicks out from fully closed

    Reason: condition Damp - Red Bull Ring

    How to test it

    Change Rebound only, nothing else. Then ride the same section or the same number of laps as before and watch whether exactly the behaviour that bothers you changes. If it gets worse or less settled, put the value back.

  2. Fork: Rebound2 clicks softer than stock

    18 clicks20 clicksclicks out from fully closed

    Reason: condition Damp - Red Bull Ring

    How to test it

    Change Rebound only, nothing else. Then ride the same section or the same number of laps as before and watch whether exactly the behaviour that bothers you changes. If it gets worse or less settled, put the value back.

  3. Tire: Front tire pressure0.05 bar less than stock

    2.5 bar2.45 bar

    Reason: condition Damp - Red Bull Ring

    How to test it

    Change Front tire pressure only, nothing else. Then ride the same section or the same number of laps as before and watch whether exactly the behaviour that bothers you changes. If it gets worse or less settled, put the value back.

  4. Tire: Rear tire pressure0.05 bar less than stock

    2.9 bar2.85 bar

    Reason: condition Damp - Red Bull Ring

    How to test it

    Change Rear tire pressure only, nothing else. Then ride the same section or the same number of laps as before and watch whether exactly the behaviour that bothers you changes. If it gets worse or less settled, put the value back.

All technical values

Complete settings, technical data, components, gearing and geometry - including the adjusters that exist on the bike but do not carry a confirmed value yet.

13 confirmed values
BrakeBrembo Radial Monobloc 4-Piston Caliper
ChainOEM Chain
Chain length114 linksreviewed
ChassisOEM Aluminium Twin-Spar Frame (RS 660)
Fork height in clampstube protrusion above top clamp2 ringOEM
ClutchOEM Wet Slipper Clutch
ECUOEM Engine Management
ForkKYB 41 mm Inverted Fork (Preload + Rebound)
Oil heightfrom top, fully compressed, no spring105 mmOEM
Preload0 turnsOEM
Reboundclicks out from fully closed20 clicks +2computed
Spring rate8 N/mmOEM
HandlebarOEM Handlebar
ShockOEM Monoshock (Preload + Rebound)
Reboundclicks out from fully closed7 clicks +2computed
Spring rate140 N/mmOEM
SwingarmOEM Aluminium Swingarm
TirePirelli Diablo Rosso Corsa II
Compoundmediumreviewed
Front tire pressure2.45 bar (35.53 psi) -0.05computed
Rear tire pressure2.85 bar (41.34 psi) -0.05computed
TransmissionOEM Final Drive
Front sprocket17 teethreviewed
Rear sprocket43 teethreviewed

After the ride

Tested a change? Record what happened. LAISA stores it against this bike and this condition. The recommendation above does not adapt to it automatically yet.

About this baseline

For a 75 kg Intermediate rider with a Neutral style, the Damp baseline for the Aprilia RS 660 2021 at Red Bull Ring shifts 4 of 13 computed settings away from the OEM standard. The biggest shifts: Rebound 7 clicks (+2 vs OEM), Rebound 20 clicks (+2 vs OEM). Values come from OEM defaults, your rider and condition factors and 4 verified reference setups.

Value provenance: OEM = manufacturer specification · verified = confirmed by an expert · reviewed = editorially reviewed reference · community = confirmed by the community (median of at least three public setups) · computed = automatically derived by the LAISA engine. Automatically extracted and unconfirmed values never appear on public pages.

No public community setups yet for this bike and condition.

Doesn't feel right on track?

Pick the symptom and we'll show the likely setup causes - and whether it is really a technique thing.

Troubleshoot a handling problem
Riding technique
Body position: hanging off and getting your knee down - body-positionLoose arms, progressive throttle on corner exit - throttleTrail braking to the apex - braking

Matching protective gear

The right setup is half the job - the other half is protective gear matched to the discipline and conditions.

AGV K1 S FASTLAP Integralhelm schwarz-rot-blau XS
HelmetFits the discipline
AGV K1 S FASTLAP Integralhelm schwarz-rot-blau XS
Alpinestars Atom Handschuhe Black White
GlovesFits the discipline
Alpinestars Atom Handschuhe Black White
CE
Alpinestars SMX-1 R V2 Belüftete Stiefel Black
BootsFits the discipline
Alpinestars SMX-1 R V2 Belüftete Stiefel Black
EN 13634CE

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Gear for these conditions

Frequently asked questions

What is a good Damp setup for the Aprilia RS 660 2021?

For a 75 kg Intermediate rider with a Neutral style, the Damp baseline for the Aprilia RS 660 2021 at Red Bull Ring shifts 4 of 13 computed settings away from the OEM standard. The biggest shifts: Rebound 7 clicks (+2 vs OEM), Rebound 20 clicks (+2 vs OEM).

What tire pressure for the Aprilia RS 660 2021 in Damp conditions?

As a starting point: 2.45 bar front, 2.85 bar rear - computed for a 75 kg Intermediate rider. Check cold and adjust in small steps by feel.

What gearing (sprockets) does the Aprilia RS 660 2021 run?

As a starting point, 17 teeth front / 43 teeth rear. For more acceleration go larger at the rear (or smaller at the front); for more top speed, the reverse.

Are these values safe to ride?

Baseline values are starting points generated from OEM defaults, rider weight, skill, style and conditions - not safety guarantees. Verify on the bike, adjust step by step and ride within your limits.

Baseline values are starting points generated from OEM defaults, rider weight, skill, style, and condition - or lifted from an expert/verified setup where one exists (see the provenance badge). They are not safety guarantees. Verify on the bike and ride within your limits.