Indy-Race mufflers were designed for use on certain motorcycles, mainly those requiring an under-seat muffler (making it difficult to use existing Arrow pots), but once available, Indy-Race mufflers were also used in some "standard" systems.
The design was inspired by the shape of certain American circuits (hence the name of the range); the cross-section reduces dimensions, while maintaining a good internal volume to dampen noise with very good power output. Internal parts are stainless steel, TIG/MIG welded, and the silencer body is available in titanium, carbon fiber and aluminum with steel or carbon end caps.
Features and max. gains:
+ 2.50 hp ( 173 hp > 175.5 hp )
+ 2.16 Nm (109.44 Nm > 111.6 Nm )
- 0.78 klgs ( 1.8 klgs > 1.07 klgs )
+ 2 db ( 99 db > 101 db )