⟲ 360° — drag meThe facts.
| Brand | K-Tech |
|---|---|
| Model | RAZOR-R HPA |
| Fitment | Yamaha YZF-R7 (2021–2026) |
| Spring series | 46-140 |
| Overall length | 310.00 mm |
| Gas pressure | 10.00 bar (N2) |
| Compression adjustment | 10 clicks |
| Rebound adjustment | 10 clicks |
| Part numbers | 280S-021-270-029 / 030 / 031 / 032 |
DescriptionThe whole story▼
When lap times matter and corner confidence is everything, the K-Tech RAZOR-R HPA shock absorber transforms the Yamaha YZF-R7 (2021–2026) from a capable middleweight into a genuinely track-ready weapon. Engineered to deliver measurably superior damping performance over the stock unit, this is the upgrade that serious YZF-R7 riders — from circuit regulars to weekend trackday enthusiasts — reach for first.
Key Features
- 10-click adjustable compression damping for precise tuning across varying track surfaces and riding styles
- 10-click adjustable rebound damping for optimal control through fast direction changes and chicanes
- Adjustable spring preload to dial in ride height and balance for your exact weight and setup
- Length adjustment for fine-tuning chassis geometry and improving stability under hard braking
- Nitrogen (N2) gas charge at 10.00 bar eliminates foaming and ensures consistent damping performance, lap after lap
- 46-140 series spring, available in four rider-weight-specific rates for optimised traction and rear-end stability
- Direct OEM replacement fitment — no modifications required for installation
Race-Derived Performance
The RAZOR-R HPA is K-Tech's high-performance answer to the YZF-R7's stock suspension limitations. The piggyback reservoir design houses the RCPU (Remote Compression and Preload Unit) with a 35.00 mm housing diameter and 14.00 mm rod, delivering a level of tunability and damping precision that the factory shock simply cannot match. Whether you are chasing a personal best on a technical circuit or looking for more confidence mid-corner on a fast road, the nitrogen-charged internals remain consistent across the full temperature range — no fade, no guess work.
The 10-click compression and 10-click rebound adjusters allow a methodical, repeatable setup process. Each detent is clearly defined, so changes between sessions are easy to track and reverse. Paired with the adjustable preload, riders can transform the R7's handling character without specialist tools at trackside.
Spring Selection by Rider Weight
K-Tech offers the RAZOR-R HPA in four rider-weight-matched variants to ensure the 46-140 series spring operates within its optimal range from the outset. Select the appropriate part number at checkout:
- 280S-021-270-029 — 65–80 kg rider weight
- 280S-021-270-030 — 80–95 kg rider weight
- 280S-021-270-031 — 95–110 kg rider weight
- 280S-021-270-032 — 110–125 kg rider weight
Fitment & Compatibility
- Yamaha YZF-R7 — model years 2021, 2022, 2023, 2024, 2025, 2026
Direct OEM replacement. Upper mount: eye type, 30.00 mm width, 10.00 mm bolt diameter. Lower mount: fork type, 25.00 mm width, 10.00 mm bolt diameter.
Installation Note
Installation must be carried out exclusively by an authorised K-Tech Service Centre. Specialist tools and techniques are required to ensure full performance and safety. Do not attempt self-installation.
Specifications
| Specification | Value |
|---|---|
| Spring series | 46-140 |
| Overall length | 310.00 mm |
| Length tolerance | -0 mm / +10 mm |
| Gas pressure | 10.00 bar (N2) |
| Compression clicks | 10 |
| Rebound clicks | 10 |
| RCPU housing diameter | 35.00 mm |
| RCPU rod diameter | 14.00 mm |
| Upper mount | Eye, 30.00 mm width, 10.00 mm bolt diameter |
| Lower mount | Fork, 25.00 mm width, 10.00 mm bolt diameter |
What's includedEverything in the box▼
- 1x K-Tech RAZOR-R HPA shock absorber for Yamaha YZF-R7 (2021–2026)
- Mounting hardware for quick and secure installation
FitmentWhich bikes this fits▼
- Yamaha YZF-R7 (2021–2026)
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