How to Personalize Your DMS

Over the years both on and off the track, we have found that no two setups react quite the same way on any two cars. It is important to be able to identify what your car is doing (in terms of handling) how to interpret it, and what to do to make the necessary adjustments!

We have compiled a little chart based on feedback from our team drivers, technicians, and our clients. None of these are concrete rules, but may be just enough to provide a starting point for those of you who are having a little trouble personalizing your DMS setup.

Symptoms will be very similar whether dealing with 40mm or 50mm. The height of the car can stiffen or soften the feeling of the car as a result of too much, or not enough preload on the springs, so pay attention to that as well. Other components such as larger or smaller swaybars, wheel alignment, type of bushings throughout the chassis, brake setups as well as lockup on LSD differentials can all affect how the automobile will react.

DMS 40mm adjust rebound at the same time as the bump so the 30 clicks of bump each provide an internally matched rebound setting. The 50mm strut has a separate adjustment with 20 clicks of bump and 4 clicks of rebound.

You will notice that your DMS adjustment tool shows the direction in order to make the suspension harder or softer. It is important not to force this adjustment or turn it outside the number of positions available. To set bump you normally adjust the suspension to the full hard position 20 or 30 clicks depending on your model then count back the number of clicks toward full soft.

Rebound on the DMS 50's is accomplished by turning the adjuster through the 4 positions available. It is important to turn it only in the specified direction. A rebound setting of 0 is fastest, in other words the strut will offer the least resistance. 3 is the slowest setting and it takes the strut longest to return to its normal position after being compressed.

Bottom of a DMS 50mm shock with protective cover over the adjustment knob.

40mm shocks provide only a bump adjustment as rebound is internally matched to the bump setting.

50mm shocks provide bump and rebound adjustments. The rebound adjustment is closest to the body of the strut and its setting is marked by red paint.

If you have any more questions please do not hesitate to ask them in our support forums as your questions may benefit all users.

Symptom	Correction
FRONT END
Front end bounces and/or hops	increase bump setting to hard ( towards 20 )
	raise rebound ( towards 3 ) / lower bump ( towards 0 )
Steering feels loose	raise rebound ( towards 3 )
Oversteering	decrease bump setting to soft ( towards 0 )
	Lower rebound ( towards 0 )
Understeering	increase bump setting to hard ( towards 20 )
	Raise rebound ( towards 3 )
Front end dives	increase bump settings ( towards 20 )
REAR END
Rear end swings out	decrease bump settings to soft ( towards 0 )
Rear end hops	raise rebound ( towards 3 ) / lower bump ( towards 0 )
Rear end too soft ( rolls )	increase bump settings to hard ( towards 20 )
	raise rebound ( towards 3 )
Rear end too hard ( uncomfortable )	decrease bump ( towards 0 )
	lower rebound ( towards 0 )
Rear end bounces	increase bump settings to hard ( towards 20 )
GENERAL
Car hits bumps hard	lower tire pressure
	less preload (lower height rings)
	softer springs
	softer bump settings ( towards 0 )
Hard to control ( twitchy )	verify alignment and tire pressure