Öhlins shock absorber TTX RT DU 531 for Ducati 1098 2007-2009, 1198 2009-2012, 848 /EVO 2008-2013

Product Details

Öhlins TTX RT shock absorber DU 531, monoshock rear, gas-pressure twin-tube damper with externa fixed reservoir; adjustable rebound damping, adjustable compression damping damping; integrated hydraulic spring pre-load adjuster; piston diameter 36 mm; with ABE
for Ducati
1098, model year 2007-2009
1198, model year 2009-2012
848, model year 2008-2013
848 EVO / EVO Corse, model year 2011-2013

General Description

Cavitation is devastating for a shock absorber, as it means the loss of damping and thus something you definitely do not want to experience in your shock absorber.
The small bubbles that form in the oil during cavitation can never support the desired damping properties of your shock absorber.

Traditionally constructed dampers can easily fall victim to cavitation under extreme conditions due to the low pressure behind the piston.

The TTX system was designed by Öhlins development engineers to prevent the risk of cavitation in the shock absorber. The plan succeeded. Thanks to the sophisticated pressure balance of TTX technology, the risk of cavitation has been eliminated from the shock absorber.

The “TT” stands for “Twin Tube”, i.e., the twin-tube design, while the “X” in the name describes the flow direction or the arrangement of the valves in the cylinder head of the TTX shock absorber. Thanks to TTX technology, the pressure that normally builds up directly above the piston is directed towards the cylinder head and to the adjusters for compression and rebound damping.

Afterwards, it reaches the free space between the inner and outer tube on the opposite side of the piston. All this happens so quickly thanks to ingenious bores and well-designed ducting that one can almost speak of a balanced pressure ratio on both sides of the piston.

The reservoir of the TTX damper is only used during the compression and rebound of the shock absorber to either absorb the oil expanded by heat or displaced by the piston shaft, or to return it to the circuit. In the reservoir, there is a separating piston between the damper oil and the nitrogen located on the other side of the separating piston. The gas generates an oil pressure of six to nine bar, which essentially corresponds to the static pressure on both sides of the main piston.