Unique Technical Features

• Piston Porting: advanced large capacity piston porting.
• Bore size: single tube large diameter shock absorber bore for lower operating pressures and temperatures.
• Damping oil: our unique formula can withstand even the highest temperatures and the most severe conditions of competition.
• Seals and o-rings: performance designed high temperature compositions.
• Shim stack design: the most critical performance feature that is a science in itself.
• Cylinder bore: critical tolerance design and detailed manufacturing techniques.
• Cylinder shaft: superior quality shaft material composition and high tolerance surface area hard chroming.
• Shell case: a unique feature utilizing chrome molybdenum enhanced steel.
• Piston ring: specially designed and formulated to handle high temperature but still giving a low co- efficient of friction break away.
• Guide bushes: precision fitted for severe service.
• Grease: expressly formulated to accommodate the critical applications of heat and wear.
• Bracketing: that exceeds even the most stringent manufacturers specifications.
• Spring seats: a combination of a high yield alloy that is process hardened.
• Springs: a unique process of thermal tempering and forming, shot peening and scragging.
• Bump rubber: intense memory formulated polymer based composition.
• Testing: DMS products are dyno tested and documented performance characteristic profiles are provided for all products.
• Fully adjustable: DMS Shock Absorbers are produced with both bump and rebound damping adjustment through a single shaft (50mm), allowing easy operation. 40mm units come with 30 positions total adjustment.
• Fitting: All DMS products are direct replacement parts. With the DMS40mm and DMS50mm shock absorbers the customer does not need to worry about mounting remote canisters.
• Quality Control: Certificates are produced to guarantee all Quality Control procedures have been followed.

DMS shock absorbers explained

40mm street

In today's market, there are many different types of shock absorbers and designs. Dampers may be classified into 2 different types, Progressive and Digressive. The majority of street applications on the market fall into the “digressive” type units. Below are some detailed explanations of the DMS brand, and engineering incorporated into our entire product line.

DMS Street suspension systems are designed with the idea that the customer will be driving too and from work everyday, to the grocery store and having to carry out day to day errands with their primary vehicle. Progressive type shock absorbers offer superior comfort settings for these conditions with out losing overall performance for the automotive enthusiast. The more load that is applied, the more the shocks will resist compression under constant load.

What this means is that if you are driving to the race track for example over rough roads with ridges, pot holes and patches, the car will not bounce over these inconsistencies in the road. However, if you encounter a more spirited drive, the suspension will prevent body roll during cornering while still maintaining traction if you run over a bump in the road at the apex of the corner. The resulting factor is the car remains stable, you continue upon your initial line of travel without breaking a mag wheel over a nasty pothole.

Once you get to the track, adjustments can be made for a more “track orientated” setting for the event, and then set back to normal for the ride home. The DMS 40mm is designed for this exact use.

50mm competition

For competition oriented cars, the double adjustable 50mm is meant for ultimate in performance and handling, the fastest launch of the tree, and most stable car under braking.

Traditionally high end shock absorbers for competition use are equipped with external reservoirs. These are used for one of two reasons: to allow for multiple adjustments, or to provide additional fluid displacement for cooling purposes. DMS has developed a unique internal configuration that allows for TRUE independent adjustments on the same shaft assembly. This combined with a huge fluid displacement capacity internally completely eliminates the need for an external reservoir for all DMS 50mm applications. The result is ease of installation, quick and rapid exchanges during competition events, and lower overall operation costs.

DMS Springs

All of our 40mm setups come with the same design philosophy of the competition 50mm units. All DMS suspension units use a specially designed 70mm ID spring to compliment our progressive type of valving. These springs can not be constructed in a conventional method, and require several specialized procedures in fabrication. Incorporating within one unit a taper wire and a taper wind design, there is no “dead spot” were a tender spring and linear spring would meet. This results in a uniform compression and rebound rate that provides superior low and high speed resistance. A major downside to these progressive rate springs is that they are very expensive to produce, approaching the 200$USD a piece. Something to be considered when purchasing a DMS suspension setup is that there is 800$ worth of springs included in every suspension kit. The same construction techniques, same materials, same engineering, and same springs are found on all 40mm and 50mm applications.