it is a awesome exhaust system. has a great sound and a increase in thr power band. Can bet a kx 100 two stroke any day. I raced my friend.
The next generation in D-Section exhaust system, the D2. This design incorporated aircraft quality stainless steel header and mid-pipes that have been tuned specifically for each model to optimize performance and power gains. A lightweight "D" profile muffler is used to dramatically reduce weight on all models. BBR's unique "D" muffler also allows for maximum tire clearance and packing volume. For all applications, the BBR D2, come as a complete system including header and muffler. A USDA Forest Service approved spark arrestor is also included. If you need to reduce the db level, BBR offers an optional Quiet Insert that will keep the neighbors happy.