Öhlins STX 46 Supersport Shock Absorber for Aprilia RS 660 (2020–2026) – AP 660
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Engineered to meet the rigorous demands of German type approval (ABE), the Öhlins STX 46 Supersport shock absorber AP 660 is a direct-fit, road-legal upgrade purpose-built for the Aprilia RS 660 (2020–2026). It transforms the RS 660's rear suspension from competent to exceptional — delivering the kind of precision and composure that ambitious street riders and occasional track day enthusiasts genuinely notice from the first corner.
Key Features
- German ABE certification ensures full road legality — no paperwork complications, no re-registration headaches for riders in Germany.
- Gas-pressure damper with a fixed external reservoir maintains consistent damping performance across sustained, demanding riding — no fade, no guesswork.
- Fully adjustable rebound and compression damping lets you dial the chassis to your weight, riding style and road conditions without specialist tools.
- Adjustable length (309 +0.5/−5.5 mm) fine-tunes ride height and geometry, sharpening steering response or adding stability at will.
- 46 mm piston diameter maximises oil flow and damping resolution, translating into a more linear, predictable rear end.
- Spring rate of 160 N/mm pairs precisely with the RS 660 platform, providing confident support without the harshness of a generic aftermarket unit.
Suspension Performance
The STX 46 Supersport range sits at the heart of Öhlins' road-biased performance lineup. The fixed external reservoir keeps oil and gas separated under sustained load — critical when a twisty mountain pass or a spirited back-road session generates the kind of heat that overwhelms a standard monotube unit. The result is a damping curve that remains accurate and consistent whether you are threading traffic on a cold Tuesday morning or pushing harder on a warm track day afternoon.
Setup Flexibility
Both rebound and compression damping are independently adjustable, giving you genuine freedom to tailor the shock to your preference without compromising one axis for another. The adjustable length feature is particularly valuable on the RS 660: a small change in ride height measurably alters steering geometry, allowing you to dial in the front-end feel that suits your riding without touching the forks. Spring part number 01093-64 is listed for reference should a rate change ever be required.
Installation
A fitting guide is included in the box. Öhlins recommends installation by an authorised Öhlins Service Centre for optimum setup and to preserve the warranty. The shock ships as a single unit (AP 660) ready to replace the standard rear damper on the Aprilia RS 660.
Fitment & Compatibility
- Aprilia RS 660 — model years 2020, 2021, 2022, 2023, 2024, 2025, 2026
- Includes German ABE (Allgemeine Betriebserlaubnis) type approval
Specifications
| Specification | Detail |
|---|---|
| Brand | Öhlins |
| Part number | AP 660 |
| Type | STX 46 Supersport shock absorber |
| Position | Rear |
| Length | 309 +0.5/−5.5 mm (adjustable) |
| Stroke | 51 mm |
| Piston diameter | 46 mm |
| Spring rate | 160 N/mm |
| Spring part number | 01093-64 |
| Damping adjustment | Rebound and compression, independently adjustable |
| Reservoir | Fixed external gas-pressure reservoir |
| Homologation | ABE (Germany) |
| Fitment | Aprilia RS 660 (2020–2026) |
| Supplied as | Single unit |
| Brand | Öhlins |
|---|---|
| Part number | AP 660 |
| Model | STX 46 Supersport |
| Position | Rear |
| Length | 309 +0.5/−5.5 mm |
| Stroke | 51 mm |
| Piston diameter | 46 mm |
| Spring rate | 160 N/mm |
| Spring part number | 01093-64 |
| Homologation | ABE (Germany) |
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1x Öhlins STX 46 Supersport shock absorber AP 660
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1x fitting guide
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