Wunderlich Suspension Shock Absorber eS4 + HPA (Low -20 mm)

eS4-SPORT HPA SHOCK ABSORBER (Low -20 mm)

Facts and product features of the Wunderlich Suspension powered by TracTive eS4-Sport HPA shock absorbers

Electronically controlled and regulated high-performance shock absorber of the latest generation as an upgrade or replacement for the standard suspension. Developed for the highest demands of discerning sports and touring riders, as well as for riders who want extra safety reserves. With top-out spring for optimum tracking and excellent riding stability, and hydraulic preload adjustment HPA. The exceptional performance of this shock absorber is impressive. It can be connected to the motorcycle electronically via plug & play without any further adjustments. Selection and adjustment of the desired riding mode is carried out conveniently and as usual via the handlebar controls. We individually select the spring rate of the spring using your personal riding profile specifications.

• Damping characteristics
• Our shock absorbers are specially developed for each specific vehicle and intended use, offering high performance and impressive reserves
• The balanced, sensitive damping behaviour of our suspension components ensures neutral, predictable handling and supports rider confidence in their motorcycle, thereby increasing personal riding enjoyment
• The shock absorbers stand out with their excellent, transparent feedback; they optimise tyre-road contact, wheel guidance and tracking, and reduce tyre wear
• The shock absorber is equipped with the patented TracTive DDA (Dynamic Damping Adjustment) damping valve, which impresses with its outstanding damping dynamics and performance, taking responsiveness to an entirely new level
• The DDA damping valve is fully compatible with the motorcycle’s control unit and processes its control signals
• Compared to the factory suspension, the DDA valve has a wider adjustment range and regulates significantly faster at 6–10 milliseconds
• Individual damping adjustment: The high-quality shock absorber features high- and low-speed compression adjustment, meaning the compression damping can be tuned depending on the speed of the compression stroke (i.e. the speed at which the damping piston moves during the process)
• The DDA damping valve and the extensive options for individual compression adjustment meet the highest demands of sports and touring riders. They noticeably increase comfort and safety
• For optimal, sensitive responsiveness,
• the oil channels are generously dimensioned to minimise oil flow resistance
• we use pistons with a large diameter (46 mm)
• as well as low-friction seals and special shim stacks
• These closed shock absorbers feature an external, forged aluminium reservoir that supports the system’s thermal stability and performance through optimal heat dissipation
• The generously dimensioned oil volume and large cooling surface ensure
• a low, optimal operating temperature of the oil
• which not only leads to stable performance at the highest level
• but also to a longer service life for both the damper and the oil
• Spring characteristics and preload
• The additional top-out spring optimises road contact during braking, noticeably improving riding stability, tracking and safety
• Hydraulic preload: The shock absorber is equipped with a sealed, extremely robust hydraulic preload adjustment. The preload is adjusted conveniently with an easily accessible hand wheel. The robust preload adjustment mechanism withstands the toughest conditions
• The wide adjustment range can compensate for a large variety of load conditions
• Set-up
• Special Wunderlich Suspension set-up for sports and touring riders who place the highest demands on their suspension
• Customisation
• We individually select the spring rate of the spring using your personal riding profile specifications: After you have chosen your shock absorber, simply specify your personal requirements during the ordering process – they are the basis for our selection of the spring that suits you
• Maintenance
• Each shock absorber can be fully serviced by the Wunderlich Suspension Centre
• The suspension tool is included in the scope of delivery

Technical data

• Material
• The shock absorber bodies are precisely manufactured from high-quality aluminium
• Special features
• Patented TracTive DDA damping valve with outstanding damping dynamics
• Additional top-out spring
• Closed system
• Build quality
• We use only high-strength components such as micro-machined, inductively hardened, tempered 42CrMo piston rods, top-quality bearings, stainless steel bushings and low-friction seals
• Dimensions
• Piston diameter 46 mm
• Piston rod diameter 16 mm
• Preload adjustment
• Hydraulic with hand wheel (HPA)
• Installation location
• Rear swing arm

Your Wunderlich benefits

• Wunderlich product. Small series. Handmade.
• Wunderlich design. Functional and integrated.
• Tested by Wunderlich
• Made in Europe
• ABE available
• 5-year warranty when complying with the 24-month maintenance intervals

Electronically controlled and regulated high-performance shock absorber with additional top-out spring for sports and touring riders with the highest demands, as well as for riders who want extra safety reserves and wish to upgrade or replace their suspension with the latest generation. The eS4-Sport HPA shock absorber was specially developed and designed to meet the highest suspension requirements of sports and touring bikes, offering high performance and impressive reserves. The comfortable preload adjustment is carried out hydraulically.

The shock absorber impresses with its excellent, transparent feedback; it optimises the front tyre’s contact with the road, wheel guidance and tracking, and reduces tyre wear. The balanced, sensitive damping behaviour of our suspension components ensures neutral, predictable handling and supports rider confidence in their motorcycle, thereby increasing personal riding enjoyment.

Connected to the control unit, the shock absorber features the patented TracTive DDA (Dynamic Damping Adjustment) damping valve, which stands out with its outstanding damping dynamics and impressive performance. The DDA damping valve is fully compatible with the motorcycle’s control unit and processes its signals in exactly the same way as the original shock absorber. Compared to the factory suspension, it offers a wider adjustment range and regulates significantly faster at 6–10 milliseconds. It can be connected to the motorcycle electronically via plug & play without any further adjustments. Selection and adjustment of the desired riding mode is carried out conveniently and as usual via the handlebar controls.

The separate high- and low-speed compression adjustment allows fine-tuning of the shock absorber to your personal needs and requirements. In addition, the shock absorber offers the possibility to control the oil flow during the compression phase – i.e. when compressing: Two separate adjusters regulate the damping at low damper speed (slow bumps on the track/road) and at high damper speed (sudden bumps or potholes). The DDA damping valve and the extensive options for individual compression adjustment meet the highest demands of sports and touring riders. They noticeably increase comfort and safety.

For optimal, sensitive responsiveness, the oil channels are generously dimensioned to minimise oil flow resistance. At the same time, we use large-diameter pistons (46 mm pistons), as well as low-friction seals and special shim stacks. These measures ensure that the breakaway forces in the system are extremely low, resulting in correspondingly sensitive damping and responsiveness. These closed shock absorbers feature a space-saving external reservoir with separate damping oil and nitrogen. The forged reservoir is made of aluminium. The high-quality aluminium housing ensures maximum thermal stability through optimal heat dissipation. The generous oil volume and large cooling surface ensure a low, optimal operating temperature of the oil. This ensures thermal stability and performance at the highest level, as well as a longer service life for both the damper and the oil.

The eS4-Sport HPA shock absorber features a special road set-up by Wunderlich Suspension for sports and touring riders who place the highest demands on their suspension. It is equipped with an additional top-out spring that optimises road contact during braking and noticeably improves riding stability, tracking and safety.

The robust, hydraulically operated preload adjustment mechanism supports riding under the toughest conditions. The wide adjustment range can compensate for a large variety of load conditions.

The outstanding quality of this shock absorber is also evident in the fact that it can be fully serviced. This ensures long-lasting enjoyment!