⟲ 360° — drag meThe facts.
| Brand | K-Tech |
|---|---|
| Model | RAZOR-R |
| Part Number | 279S-020-010-011 |
| Fitment | Aprilia RS 660 (2020–2026) |
| Spring | 46-150 series (46-150-160) |
| Overall Length | 308.00 mm (tolerance -1 mm / +9 mm) |
| Stroke | 55.00 mm |
| Spring Rate | 160.00 N |
| Gas Pressure | 10.00 bar (nitrogen charged) |
| Upper Mount | Eye, 23.00 mm width, 10.00 mm bolt diameter |
DescriptionThe whole story▼
The K-Tech RAZOR-R is a fully adjustable rear shock absorber engineered to transform the handling character of the Aprilia RS 660. Rooted in K-Tech's proven motorsport heritage, its clean anodised finish and precise machined construction mark it out as a component built to a higher standard — one that rewards riders who demand both aesthetic quality and genuine dynamic performance from their suspension.
Key Features
- 12-click compression damping adjustment for precise tuning across a wide range of road and track conditions
- 10-click rebound damping adjustment for controlled, confident handling through fast direction changes
- Adjustable spring preload to dial in the correct ride height and balance for rider weight and riding style
- Length adjustment (RCU travel: 4.00 mm) allows fine-tuning of chassis geometry
- Nitrogen (N2) charged internals deliver consistent damping performance and eliminate aeration foam
- 46-150-160 spring specification ensures enhanced traction and stability under hard acceleration and braking
- Direct OEM-compatible fitment — straightforward installation with no modifications required
Design, Finish and Heritage
K-Tech Suspension has built its reputation supplying shock absorbers and fork cartridges to professional race teams across British Superbikes, World Supersport, and the Isle of Man TT. That competition-derived knowledge feeds directly into the RAZOR-R range. The unit's housing carries K-Tech's characteristic clean machined appearance — a component that looks as purposeful as it performs, complementing the RS 660's sharp bodywork without compromise.
The 35.00 mm RCU housing diameter and 14.00 mm shaft are dimensioned for the RS 660's specific rear linkage geometry. Upper and lower eye mounts measure 23.00 mm wide with a 10.00 mm bolt diameter at each end, matching the factory mounting hardware precisely. A nitrogen charge at 10.00 bar keeps the oil-gas interface stable under sustained load, whether the bike is being ridden hard on a Sunday morning road route or pushed through a track day session.
On-Road and Track Performance
The RAZOR-R's 22-click combined adjustment range — 12 clicks of compression, 10 of rebound — gives riders a genuinely wide tuning envelope. A spring preload of 5 mm is set from the factory, with the 46-150-160 spring (spring rate 160 N) delivering a firm yet compliant platform that suits the RS 660's mid-weight chassis. The 55.00 mm stroke and overall length of 308.00 mm (adjustable within a -1 mm / +9 mm tolerance) replicate the OEM travel envelope while providing the resolution to improve on stock damping characteristics at both ends of the speed range.
Fitment and Compatibility
The K-Tech RAZOR-R shock absorber part number 279S-020-010-011 is a direct fitment for the following motorcycle:
- Aprilia RS 660 — model years 2020 to 2026
Installation Note
Installation should be carried out exclusively by an authorised K-Tech Service Centre. Specialist tools and technical knowledge are required to ensure maximum performance and safety of the shock absorber.
Specifications
| Specification | Value |
|---|---|
| Part Number | 279S-020-010-011 |
| Spring | 46-150 series (46-150-160) |
| Overall Length | 308.00 mm |
| Length Tolerance | -1 mm / +9 mm |
| Stroke | 55.00 mm |
| Spring Rate | 160.00 N |
| Gas Pressure | 10.00 bar |
| Upper Mount | Eye, 23.00 mm width, 10.00 mm bolt diameter |
| Lower Mount | Eye, 23.00 mm width, 10.00 mm bolt diameter |
| Compression Clicks | 12 |
| Rebound Clicks | 10 |
| Spring Preload | 5 mm |
| RCU Adjustment Travel | 4.00 mm |
| RCU Housing Diameter | 35.00 mm |
| RCU Shaft Diameter | 14.00 mm |
What's includedEverything in the box▼
- 1x K-Tech RAZOR-R shock absorber for Aprilia RS 660 (2020–2026)
- Mounting hardware for straightforward and secure installation
FitmentWhich bikes this fits▼
- Aprilia RS 660 (2020–2026)
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