Today, there are 5 generations of Haldex 4WD systems. When the first generation was released in 1998 in Audi TT, Audi S3 and VW Golf it featured an electronically controlled hydraulic-mechanical all-wheel drive concept. This system attempts to engage the rear wheels when the front wheels start to slip.

Second generation Haldex (2001 -2005) got some elecrical improvements that included an electronically-controlled solenoid pack. II gen system automatically distributes power between the front and rear wheels depending on slippage, but normally sends 95% of the power to the front wheels.

It took about 5-6 years to release the third generation Haldex with enhanced capabilities. Only a year later, in 2007,  4th generation was introduced. A single electric pump took over from the mechanical differential pump. Commanded by the ECU/DEM it could vary its pressure based on situation

When BorgWarner bought into Haldex in 2011 they were able to strip away quite a few of the components that used to be necessary to operate the clutches like accumulator, solenoids and fluid filter and started using the Centrifugal Electro-Hydraulic Actuator.

Why do you need to upgrade your Haldex differential? 

We all know that the 5th gen Haldex is not good enough for us, petrolheads, that want more performance and more control over the transmission setup and power delivery. From this catecory you’ll find suitable products to completely change and take control over the characteristics of your project build.

Because every gen of haldex has its flaws from clogged filters to electronic faults. Electric pumps may be more accurate but they still fail over time. More over they do not like to handle the more aggressive driving style that comes together with a power increase. That is why we have Syvecs 4WD controller and Wavetrack differentials on sale.