Dr. D

Dr. D D-Shape Complete Exhaust With Spark Arrestor

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Item #DRD0001

At the top of nearly every four-stroke exhaust shootout, the Dr. D system stands second-to-none in research and development. No one has more hours in the testing saddle than Doug Dubach.

Expect up to a 3 - 5 horsepower gain and up to a 50% weight savings.
Each step in the exhaust pipe is achieved via a precision machined ring that not only adds to the performance but gives the Dr. D pipe a distinctive look.
The USFS spark arrestor version comes standard with a removable spark arrestor screen.
Stainless steel complete exhaust.
Includes head pipe.
Note: WR models require mounting kit (sold separately).

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Question asked by Kes450

Question: 05 TRX450R with drd slip on pipe and no airbox lid watch Jets do you run 4 anywhere from sea level to 5000 feet or more I ride at Stoddard Valley Dumont and Pismo need the number of the main and the pilot Jets Question asked 21 days ago Answer this Question: Question answered by Paul

User's contributor status: Top 10
Question answered 21 days ago
Answer: Tuning your jetting is mostly a trial and error process. There are too many variables such as elevation, temperature, and riding style for us to provide a reliable suggestion.
Check out the simple guide to rejetting your carburetors: http://www.motosport.com/blog/a-simple-guide-to-jetting-your-carb

Question asked by mxracer333c

Question: Decibel level? Question asked Over 5 years ago Nothing mentioned in description about expected noise level? Answer this Question: Question answered by MotoSportExpert

User's contributor status: Top 10
Question answered Over 5 years ago
Answer: Most aftermarket systems sound pretty much the same. Some have a deep sound and some, after a few miles, have a raspy sound. Some will have a different tone and even the same exhaust system can sound differently on different models of motorcycles. In general most systems are around 92 to 98db's.
If you run your rpm up to the rev limiter the db's may go as high as 100 to 102+db's.

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Product Variant	Manufacturer Part #
Dr. D D-Shape Complete Exhaust With Spark Arrestor	2503

Dr. D D-Shape Complete Exhaust With Spark Arrestor

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Dr. D D-Shape Complete Exhaust With Spark Arrestor

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