A Titanium system designed for all riders and can be used in conjunction with a spark arrestor screen and quiet core insert.This system meets the AMA sound legal requirement of 99db and with the quiet core insert it will pass a 94db sound tes ...

The DR. D slip on exhaust is birthed from Doug Dubach, who brings years of experience to the motocross and supercross scene. DR. D constructed this slip on system with an aluminum muffler in conjunction with a magnesium end cap to reduce weig ...

AMA sound legal requirement of 99db.Top of the line exhaust recommended for the serious racer.Easily serviceable with the same high standard of quality you only get from DR.D.The Carbon Can should not be run with the quiet insert, and attenti ...

Stainless steel construction.

The DR.D Spark Arrested End Cap fits directly onto stock OEM exhaust systems and enables stock motocross exhaust to be easily converted to a spark arrestor/USFS-legal system.The DR.D Spark Arrested End Cap is an affordable option for motocros ...

Same style plunger as standard hot start. Closes automatically - never worry that you left it on.

Step System improves low end with substantial gain in the mid and top.The carefully tuned steps in the system allow for a lower net cylinder pressure, which gives a crisper throttle response from bottom to top.Manufactured from high-quality, ...

AMA sound legal requirement of 99db.Top of the line exhaust recommended for the serious racer.Easily serviceable with the same high standard of quality you only get from DR.D.The Carbon Can should not be run with the quiet insert, and attenti ...

Decreases db level with minimal power loss. Works in DR.D Spark Arrestor Version exhaust. Works with DR.D spark arrestor end cap. Removable. Spark Arrestor screen welded to the inside of cone.

DR.D motorcycle and ATV exhaust have been at the top of several 4-stroke shootouts because of their ground breaking performance, light weight and horsepower gains. DR.D D-Shape exhaust are packed with such performance that most motorcycles an ...

Great to use on any 2-Stroke or 4-Stroke engine. Electric clock keeps time only while engine is running. It starts counting when it feels electrical pulse through spark plug wire and shuts itself off when the pulses stop. Helps monitor servic ...

Lowers radiators by almost an inch.Helps keep the front end planted.Lowers center of gravity making your bike feel lighter and handle better.

The Hour Meter Bracket allows you to use screws in addition to the two sided tape to secure your DR D hour meter. The DR.D Hour Meter Bracket is a breeze to install, simply remove the top front gas tank bolt, position the bracket in place and ...

The Dr. D Step System is lighter than stock and gives a better throttle response from bottom to top. Improved low end with substantial gain in the mid and top.

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% we ...

The DR. D complete exhaust system is birthed from Doug Dubach, who brings years of experience to the motocross and supercross scene.DR. D constructed this complete exhaust system with an aluminum muffler in conjunction with a magnesium end ca ...