Product Details
Suitable for the highest‑level professional competitions and the most extreme off‑road conditions.
• Core Damping Tuning
• 5–6 adjustable damping levels
• Standard hydraulic cushioning
The Champions’ “Secret Weapon”
Achieving the perfect balance between powerful performance and lightweight design.
Delivering full‑power performance for extreme off‑road rally sprints.
Lightweight construction effectively reduces unsprung mass.
HP.4
Demonstrating exceptional accuracy in extreme scenarios:
The multi‑stage inverted shock absorber consistently delivers top‑tier performance in the world’s premier rally events. Drawing on decades of deep expertise, our team has meticulously optimized every component of this damper, laying a solid foundation for victory on the race track.
Achieving the perfect balance between powerful performance and lightweight design.
Achieving the perfect balance between powerful performance and lightweight design.
Achieving the perfect balance between powerful performance and lightweight design.
HP.4
• Core Advantages
| Stability | ★★★★★ | The HP4’s robust damping control and reliable cushioning system deliver rock-solid shock absorption for every hardcore rider, while its race‑proven quality lets more riders experience professional‑grade chassis control. |
| Flexibility | ★★★★ | |
| Trip length | ★★★★★ |
|
| Adjustment Options | ★★★★ |
Other
HP4
Performance technology products
Multi‑damping shock absorbers: the key to clinching victory on the racetrack.
Technical Highlights
Through in-house manufacturing and rigorous quality-control processes, we strive to achieve tighter tolerances and greater product consistency. This enables vehicles to deliver crisp road feedback and stable traction—our starting point for both products and services.
To ensure optimal performance on specific vehicle models, we conduct necessary measurements and make appropriate adjustments based on model‑specific data prior to delivery, enabling the upgraded components to deliver their full potential.
Our product lineup covers off-road motorcycles, dirt bikes, electric off-road motorcycles, and motocross bikes.
Our internal R&D efforts involve cross‑disciplinary development; these cross‑functional experiences and technological expertise broaden our perspective and provide valuable insights, which we leverage to drive continuous product improvement.
Pure shock-absorbing force
Experience‑based dampers deliver an impeccable balance of comfort, traction, and handling. With adjustable rebound and compression settings, you can fine‑tune every drive to suit your personal preferences. The adjustable rebound control precisely manages body pitch and wheel‑rebound dynamics, ensuring a consistent damping feel regardless of ambient temperature or terrain conditions.
Ultimate off-road road feel
Clear road feedback puts every pothole and rut firmly in your grasp. Hydraulic bump stops gently absorb impacts at the end of the travel, while robust support ensures swift stabilization after vigorous jolts, giving you greater confidence to tackle even more challenging terrain.
HP.4 Technical Highlights
 |  |  |  |
Single-tube multi-valve damping + race-grade chassis: The single-tube, multi-valve design ensures stable heat dissipation and damping; the coil-over height is adjustable, and it is made from aluminum alloy or steel alloy.
|
Rebound adjustable: By aligning with the wheel‑return‑to‑center rhythm, the overall fine‑tuning of the vehicle’s pitch‑control settings becomes more stable and easier to manage.
|
5-6 Adjustment of Base Damping: Rebound and low-speed compression are independently adjustable.
|
Dual protection: secondary piston plus hydraulic buffer. The secondary piston delivers progressive damping in the latter portion of its stroke, while bidirectional hydraulic bump stops at the end smoothly dissipate extreme energy.
|
Countless championship titles
For many years, numerous Chinese and international rally teams have consistently placed their trust in Doner shock absorbers, repeatedly securing top-three overall finishes and class victories in premier events such as the Tengger Rally, the Silk Road Rally, and the Dakar Rally, thereby fully demonstrating their outstanding performance and exceptional reliability.
2014
We have introduced cutting-edge international vibration‑reduction technologies and established in-depth collaborations with overseas technology partners, laying a solid foundation for independent research and development.
2016
Guangzhou DN Suspension Technology Co., Ltd. was officially established, concurrently setting up an R&D center and maintaining close collaboration with racing teams to dedicate itself to product development.
2022
At the driver clinched the UTV Club Cup title, the Women's Class title, and runner-up honors in the Modified Class, underscoring his prowess across multiple racing disciplines.
