On the afternoon of June 27, 2025, theYamaha Performance Damper (Yamaha PD) test ride and drive event, 

jointlyorganized by Guangzhou JET and Shenzhen Zero Racing, and supported by YamahaMotor (China) and 

Shenzhen Ruixin Auto Kitchen, was successfully held atShenzhen Ruixin Auto Kitchen in Happy Coast, Nanshan, Shenzhen.

This event aims to give clients a deepunderstanding of the product’s principles throughexpert explanations and 

immersive test drives, allowing them to personallyexperience the enhanced benefits of smooth cornering, quiet driving, 

andcomfortable mobility.

At the beginning of the event, ShenQichang, Section Chief (Director of Technical Development Departmeng) 

of YamahaMotor (China) PD Division, and Qin Hua, Section Chief, gave a clear andaccessible introduction 

to the development history, design philosophy,functional principles, and application areas of Yamaha PD.

Then Yamaha’sofficial technical engineer conducted an on-site demonstration of theinstallation on an actual 

vehicle and explained the key installation points,helping the guests gain a better theoretical understanding of the product.

【Mr. Tang, Director of the PD Division ofYamaha Motor (China), Mr. Xu, Manager of Ruixin Auto Kitchen, 

Mr. Yang, Founderof Shenzhen Zero Racing Company, and Mr. Kishimoto from Guangzhou JET attendedthe event

 (front row, from left to right)】

Core Experience: Comparing Test Rides andTest Drives

Test drives were the highlight of theevent. To clearly showcase the performance of the Yamaha PD, six mainstreamMPVs 

were made available on-site: 2 Toyota Alphard (40 Series), 2 Buick GL8(PHEV), and 2 Denza D9 DM-i. Of these, 

3 were in their original factorycondition, while the other 3 had been upgraded with the Yamaha PD system.

Through back-to-back test drives, guests were able to directly experience thedifferences before and after the upgrade.

The test drive route was set on real urbanroads, with full adherence to traffic regulations throughout. 

To ensure safety,simulated emergency scenarios (such as sudden evasive maneuvers) were carriedout 

only in areas where it was confirmed that there were no vehicles orpedestrians nearby. 

The route featured a variety of roadconditions: multiple traffic lights (requiring frequent stops and starts),

bumpy sections, speed bumps, both sharp and gentle turns, as well as straightstretches. Under safe conditions, 

common driving scenarios were also simulated,including hard braking, rapid lane changes, emergency evasive 

maneuvers, quickacceleration, and slight steering inputs that caused body sway—all designed to provide guests 

with a realistic and comprehensivedriving experience.

Test Drive Feedback: Significant Effectiveness

After the test drive, many guests expressedtheir recognition and praise for the performance delivered by the 

Yamaha PD.Additionally, due to differences in weight, body structure, and chassistorsional rigidity among 

the three test models (Alphard, GL8, and Denza D9) intheir factory configurations—with a general consensusthat

 torsional rigidity and comfort rank as: Denza D9 > GL8 > Alphard—guests generally reported that the upgrade 

had the most noticeableeffect on the Alphard, which has relatively weaker chassis torsionalrigidity. 

Moreover, on bumpy roads, during hardbraking, and in simulated emergency maneuvers, both the upgraded GL8 

and DenzaD9 also clearly demonstrated the Yamaha PD’s ability tosuppress excess body vibration and sway.

Cornering Performance: When sitting in anon-upgraded vehicle during cornering, one can clearly feel a stronger 

forcepulling the body to one side (a pronounced sense of lateral G-force), and theextent of body roll and sway 

feels more unsettling. At times, irregularvibrations from the rear chassis can also be felt.

In contrast, in a vehicle equipped with theupgraded Yamaha PD, there is a noticeable reduction in body roll 

and a morestable vehicle posture. The Yamaha PD absorbs the energy caused by bodydistortion due to centrifugal 

force, effectively suppressing roll and yaw. Thepreviously distinct sensation of being thrown outward (lateral G-force) 

and thevibrations from rear chassis distortion are significantly reduced, resulting ina much greater sense of stability 

and smoothness when cornering.

Bumpy sections: When driving over potholesor speed bumps, an unupgraded vehicle transmits the jolts clearly 

through theseat, making it feel as though the entire car is shaking. This is accompaniedby a distinct "rumbling" 

noise inside the cabin, especially near theears, where the sound feels scattered, prolonged, and diffuse.

In a vehicle equipped with the upgradedYamaha PD, the most noticeable change is the reduced vibration; 

the impact feltthrough the seat is much less harsh. Yamaha PD absorbs and suppresses excessivechassis vibration 

energy caused by road impacts, reducing the transmission ofvibrations to the car body. Passengers notice that 

the "rumbling"noise becomes quieter, the sound more focused and concise, and the previouslydrawn-out, 

diffuse sensation quickly fades away, making the cabin significantlyquieter and more composed.

Handling Stability: During simulations ofrapid lane changes, emergency evasive maneuvers, or when the driver 

deliberatelymakes quick, alternating steering inputs to create continuous side-to-sideswaying, the Yamaha PD’s 

damping chamber swiftlyabsorbs the oscillation energy generated by the vehicle body (including energyfrom 

repeated swaying), significantly accelerating the vehicle’s return to a stable state.

From the passenger’sperspective, compared to a non-upgraded vehicle—whereaggressive maneuvers or 

deliberately induced swaying result in pronounced bodymovement and uncomfortable, lingering oscillations 

(residual vibrations thatmake the vehicle feel loose and hard to control)—theupgraded vehicle, under the same 

conditions, not only reduces the initialsensation of swaying but also effectively suppresses the cumulative impact 

ofcontinuous oscillations. Most importantly, once the swaying stops, the vehiclereturns to a stable state more quickly 

and decisively, with a significantreduction in unnecessary residual movement.

During the test ride and drive, Yamaha'sofficial technical personnel noted that such intense maneuvers are 

rarelyrequired during regular short-term driving. However, in long-distance drivingor under complex road 

conditions, similar operations can accumulate over time.After upgrading to Yamaha PD, its ability to continuously 

and effectivelyabsorb excess vehicle body movement enables the car to stabilize more quicklyafter shaking.

For the driver, this quicker stabilizationsignificantly reduces the need for frequent minor steering adjustments 

tomaintain proper posture during long or challenging drives, thereby lowering themental effort required to keep 

the vehicle stable and effectively easingdriving fatigue.

For passengers, by suppressing theaccumulation of body movement energy caused by individual or repeatedmaneuvers, 

overall ride smoothness is enhanced throughout the journey,effectively reducing feelings of motion sickness.

The Yamaha PD test ride and drive event inShenzhen concluded smoothly and successfully. We sincerely thank 

Shenzhen Ruixin Auto Kitchenand all the guests who attended for their support. 

Looking forward to seeing you next time!