Wunderlich Suspension Cartridge eC4

eC4 Cartridge Set

Function and product features of the Wunderlich Suspension powered by TracTive eC4 Cartridge Set

Adaptive, electronically controlled and regulated high-performance cartridge set of the latest generation as an upgrade or replacement for the standard suspension. Developed for the highest demands of discerning adventure riders who frequently ride off-road, touring riders who regularly travel with heavy loads, and riders who want extra safety reserves. Outstanding damping dynamics and reduced risk of bottoming out thanks to the patented TracTive DDA damping valve and the PDSII system. The exceptional performance of these cartridges is impressive. They can be connected to the motorcycle electronically via plug & play without further adjustments. Selection and setting of the desired riding mode is conveniently carried out via the handlebar controls, as usual.
We select the spring rate of the spring individually based on your personal riding profile specifications.

• Damping characteristics
• Our cartridge sets 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, supporting rider confidence and thus personal riding enjoyment
• The cartridges impress with excellent, transparent feedback, optimising tyre-to-road contact, wheel guidance, tracking, and reducing tyre wear
• The cartridge connected to the control unit features the patented TracTive DDA damping valve (Dynamic Damping Adjustment), which excels with its convincing damping dynamics and impressive performance, taking fork response to a whole new level
• The DDA damping valve is fully compatible with the motorcycle’s control unit and processes its control signals in the same way as the original cartridge
• The DDA valve offers a greater adjustment range compared to standard damping and regulates significantly faster, within 6-10 milliseconds
• The rebound and compression adjustment with 18 clicks allows additional fine-tuning of the damping. This is done using the suspension tool on the cartridge that is not connected to the control unit
• To achieve optimal, sensitive responsiveness,
• the oil channels are generously dimensioned
• we use large-diameter pistons (35 mm – the largest on the market) to minimise oil flow resistance
• as well as low-friction seals and special shim stacks
• The cartridge set is equipped with a so-called PDSII system to prevent hard bottoming, in which a second, integrated damping piston creates an additional damping stage at high compression speeds
• The rebound and compression adjustment, in combination with the PDSII system, can reduce frame stress while increasing comfort and safety – not just off-road
• The closed aluminium cartridge housings support the thermal stability and performance of the system through optimal heat dissipation
• The generous oil capacity ensures
• a low, optimal operating temperature for the oil
• which not only leads to stable, top-level performance
• but also extends the service life of the damper and the oil
• Spring characteristics and preload
• Manual spring preload: The spring preload can be adjusted with the supplied suspension tool
• The generous adjustment range can compensate for a wide range of load conditions
• Setup
• Wunderlich Suspension for high demands
• Customisation
• We select the spring rate individually based on your personal riding profile specifications: After choosing your cartridge set, simply specify your personal specifications in the ordering process – they are the basis for selecting the spring that suits you
• Maintenance
• Each cartridge can be professionally serviced in full at the Wunderlich Suspension Centre
• The suspension tool is included in the scope of delivery

Technical data

• Material
• The cartridge housings are precisely manufactured from high-quality aluminium
• Special features
• Patented TracTive DDA damping valve with outstanding damping dynamics
• PDSII system to reduce the risk of bottoming out
• Closed cartridge system
• Build quality
• We use only high-strength components such as micro-machined, induction-hardened, tempered 42CrMo piston rods, top-quality bearings, stainless steel bushings and low-friction seals
• Dimensions
• Piston diameter 35 mm
• Piston rod diameter 10 mm
• Spring preload adjustment
• Manual
• Installation location
• Front fork
• Set
• The set consists of two cartridges

Your Wunderlich advantages

• Wunderlich product. Small batches. Handmade.
• Wunderlich design. Functional and integrated.
• Tested by Wunderlich
• Made in Europe
• With ABE
• 5-year warranty when observing the 24-month maintenance intervals

Electronically controlled and regulated high-performance cartridge set with PDSII system for demanding adventure riders who frequently go off-road, touring riders who regularly travel with heavy loads, and riders who want extra safety reserves and wish to upgrade or replace their suspension with the latest generation. The eC4 set has been developed and engineered for the highest suspension demands of adventure and sport bikes, offering high performance and impressive reserves.

The set offers excellent, transparent feedback, optimises front tyre-to-road contact, wheel guidance and tracking, and reduces tyre wear. The balanced, sensitive damping behaviour of our suspension components ensures neutral, predictable handling, supporting rider confidence and thus personal riding enjoyment.

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

With the suspension tool, rebound and compression damping can be fine-tuned in 18 clicks according to your own requirements and preferences. This adjustment is made on the cartridge that is not connected to the control unit.

For optimal, sensitive responsiveness, the oil channels are generously dimensioned to minimise oil flow resistance. At the same time, we use large-diameter pistons (35 mm – the largest on the market) as well as low-friction seals and special shim stacks. These measures ensure that the breakaway forces in the system are extremely low and that damping and responsiveness are correspondingly sensitive.

In addition, the cartridge set is equipped with a so-called PDSII system to prevent hard bottoming, where a second, integrated damping piston creates an additional damping stage at high compression speeds.

The PDSII system, in combination with the rebound and compression adjustment, can reduce the risk of frame overstress while increasing comfort and safety – not just off-road.

The high-quality, closed aluminium housing provides maximum thermal stability through optimal heat dissipation. The generous oil capacity ensures a low, optimal operating temperature for the oil. This not only results in stable, top-level performance but also in a longer service life for the damper and the oil.

The manual spring preload adjuster offers a generous adjustment range, compensating for a wide variety of load conditions.

The eC4 cartridge set features the special Wunderlich Suspension setup for adventure and touring riders with the highest demands on their suspension.

We select the spring rate individually for you based on your riding profile specifications: After choosing your cartridge set, simply specify your personal specifications in the ordering process.

The excellent quality of this cartridge set is also evident in the fact that it can be completely serviced – ensuring long-lasting enjoyment!