Wunderlich Suspension Shock absorber S4 + HPA - standard - rear

Facts and product features of Wunderlich Suspension powered by TracTive S4 HPA shock absorbers

Latest-generation high-performance shock absorber as an upgrade or replacement for the standard suspension. Developed for the high demands of ambitious adventure riders who frequently ride off-road, touring riders who regularly travel with heavy loads, as well as riders who want additional safety reserves. With PDS bottom-out protection system and hydraulic spring preload adjustment (HPA).

We individually select the spring rate based on your personal riding profile specifications.

• The damping characteristics
• Our shock absorbers are specifically developed for the respective vehicle and intended use and offer high performance and impressive reserves
• The balanced, sensitive damping behaviour of our suspension components ensures neutral, predictable handling and supports confidence in the motorcycle, thus enhancing riding enjoyment
• The shock absorbers impress with excellent, transparent feedback, optimise tyre contact with the road surface, wheel guidance and directional stability, and reduce tyre wear
• Individual damping adjustment: The high-quality shock absorber features high- and low-speed compression damping adjustment, meaning the compression damping can be adjusted depending on the speed of the compression process (or the speed at which the damping piston moves during the process)
• The rebound damping adjustment with 18 clicks allows individual fine-tuning of the damping using the suspension tool
• The shock absorber is equipped with a so-called PDS system, which reduces the risk of bottoming out under hard use and the associated stress caused by severe impacts
• The PDS system as well as the extensive options for individual rebound and compression adjustment meet the highest demands of adventure and touring riders. They noticeably increase comfort and safety and can help reduce stress on the frame
• To achieve optimum, sensitive response behaviour,
  • the oil channels are generously dimensioned to minimise oil flow resistance
  • we use large-diameter pistons (46 mm)
  • as well as low-friction seals and special shim stacks
• These closed shock absorbers feature an external, forged aluminium reservoir, which supports the thermal stability and performance of the system through optimal heat dissipation
• The generously sized oil volume and large cooling surface ensure
  • a low, optimal operating temperature of the oil,
  • which not only results in stable top-level performance,
  • but also in a longer service life of the damper and the oil

• The spring characteristics and preload
• Hydraulic spring preload: The shock absorber is equipped with an encapsulated, very robust hydraulically operated spring preload adjustment. The preload is conveniently adjusted using an easily accessible handwheel. The robust preload adjustment mechanism withstands the harshest conditions
• The generous adjustment range can compensate for a wide variety of load conditions

• Tuning
• Special Wunderlich Suspension tuning for adventure and touring riders who place high demands on their suspension

• Customisation
• We individually select the spring rate based on your personal riding profile specifications: After selecting your shock absorber, you simply define your personal specifications during the ordering process – they form the basis for selecting the spring that suits you

• Maintenance
• Each shock absorber can be fully serviced professionally at the Wunderlich Suspension Center
• The suspension tool is included in the scope of delivery

Technical data

• Material
  • The shock absorber housings are precisely manufactured from high-quality aluminium
• Special features
  • PDS system – reduces the risk of bottoming out
  • Closed system
• Manufacturing quality
  • We exclusively use high-strength components such as micro-machined, induction-hardened, tempered 42CrMo piston rods, bearings of the highest quality, stainless steel bushings, and low-friction seals
• Dimensions
  • Piston diameter 46 mm
  • Piston rod diameter 16 mm
• Spring preload adjustment
  • Hydraulic with handwheel (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
• 5-year warranty subject to compliance with the 24-month maintenance intervals

Without ABE (German general operating permit), delivery includes a German strength certificate for individual approval by TÜV, Dekra or similar.