The DA engines achieve their high power with a tuned silencer system, as is the case with all high performance engines.

The large volume and the compact construction (large volume with small surface area) make these silencer units especially quiet. They are made from thin-wall stainless steel tubing, Laser welded and highly polished. The use of stainless steel throughout makes for an exceedingly robust and lightweight unit.

At approx. 5800 RPM the best tuned length is X = 365 mm. So the best header length for the DA 150 is 300 mm.

Stainless steel silencer DA 150
Without header and fixing materials. Weight 430 g.

Stainless steel is vastly superior to aluminium in two ways, stainless alloys can withstand much higher temperatures and are very much tougher. To give an example, the header fixing screws can be firmly tightened down and do not need to be regularly tightened as is the case with aluminium. Also stainless can withstand far better, the constant oscillation and vibration that exhaust system must live with.

Stainless steel silencers have a very long life, exceeding by a large margin other metals that will often fall apart after a short running time. The higher specific weight is compensated by the thinner wall thickness that one can use. The only disadvantages are the higher cost of stainless plus it’s extreme toughness makes it very difficult to work with.

Smoke Nipple

The stainless steel silencer #5870 can be supplied fitted with a nipple for smoke oil.

Extra cost for smoke oil nipple
#5772   3,50 EUR

Stainless Steel Header Pipes

Light and tough headers made from stainless steel tube 25 x 0,5 mm. The narrow headers can be mounted inclined either to the middle or to the outside.

The center line length on all headers is 300 mm. For the DA 150 this is the correct length when using the silencer #5770.

Weight per pair: 240g.

Header pair for DA 150, normal,
#5877  51,90 EUR

Weight per pair: 240g.

Header pair for DA 150, wide,
#5878  51,90 EUR

Weight per pair: 240g.

Teflon Tubing and Spring Clips

For connecting silencer and header.

Teflon Tube ø25 x 2 mm,
  5 cm #3896  4,40 EUR
10 cm #3897  6,95 EUR
15 cm #3898  9,75 EUR

Spring Clip ø25 mm
per 1   #3899   1,50 EUR

Exhaust flange for DA 150

Laser cut from 3 mm stainless steel to make headers.

DA 150 Auspufflansch #5871  5,20 EUR