K-Tech RAZOR-R LITE Shock Absorber for Aprilia RS 660 (2020–2026) – Part 287SD-020-010-010

Upgrading the rear suspension on your Aprilia RS 660 (2020–2026) does not have to mean compromising your budget for track-day performance. The K-Tech RAZOR-R LITE shock absorber delivers a meaningful step forward from the standard unit, giving you a settled, planted ride whether you are commuting, touring or pushing hard on a favourite road. Its thoughtfully engineered adjustability means you can dial in a setup that genuinely suits your weight, riding style and the conditions underfoot — all day, every lap.

Key Features

• Internal nitrogen reservoir keeps the nitrogen gas separated from the damping oil, eliminating cavitation and maintaining consistent damping performance over extended riding sessions.
• Adjustable rebound damping with 10 clicks of adjustment lets you fine-tune the shock's return speed to match your preferred feel on any road or track surface.
• Length adjustment with a tolerance of -1 mm / +9 mm allows precise ride-height setting, so you can tailor the geometry of your RS 660 to suit your stature and riding preference.
• Adjustable spring preload (5 mm standard preload) enables accurate load compensation for different rider weights and pillion or luggage configurations.
• Nitrogen (N2) fill prevents oil foaming under sustained hard use, ensuring the damping character remains predictable and consistent throughout a full ride.
• 46-150 series spring provides a strong foundation of stability and control, with multiple spring rates available to match your specific weight and application.
• Cost-effective performance upgrade — the RAZOR-R LITE sits at an accessible price point without sacrificing the build quality K-Tech is known for.

Build Quality and Performance

The RAZOR-R LITE is built around a 35.00 mm diameter RCPU housing and a 14.00 mm diameter damper rod, proportions chosen to balance stiffness, durability and compact packaging on the RS 660's chassis. Gas pressure is set to 15.00 bar, providing a firm, well-controlled platform that resists fade. The RCU adjustment range of 3.00 mm gives the unit a degree of fine-tuning depth that goes well beyond a standard OEM shock.

Both the upper and lower mounting eyes share a consistent 23.00 mm width and 10.00 mm bolt diameter, making fitment straightforward and ensuring solid, rattle-free attachment points. Total unit length is 308.00 mm with a 55.00 mm stroke, figures that sit within the RS 660's original suspension envelope so no ancillary modifications are required.

On the Road and on Track

Riders who cover long distances will appreciate how the RAZOR-R LITE absorbs road imperfections without transmitting harshness through the seat, a direct result of the nitrogen-separated damping circuit working smoothly across a wide range of inputs. On track, the rebound click adjustment becomes invaluable: tighten the rebound for aggressive corner exits or open it slightly for technical, bumpy sections. The spring rate options mean you are not locked into a compromise — order the appropriate rate for your weight and the shock arrives ready to perform from the first installation.

Fitment and Compatibility

This shock absorber is designed and specified as a direct-fit replacement for the following model:

• Aprilia RS 660 — model years 2020, 2021, 2022, 2023, 2024, 2025, 2026

Please note: installation must be carried out exclusively by an authorised K-Tech Service Centre. Specialist tools and technical expertise are required to ensure correct fitment, maximum performance and safe operation of the unit.

Specifications