Found this at SCK Motor while looking for some parts for Yamaha 135LC. This is the new version of the AHM exhaust. It looks a little bit like NOB1 exhaust pipe. The sticker price is at RM480 compared to normal AHM exhaust pipe that is at 280-380 price, it means that this one is really priced higher than the others.
The mechanic said that this exhaust performs very well. You can get up to 170km/h for Yamaha 135LC.
This exhaust is also available for Suzuki Belang R150 (Raider 150R) and Kawasaki KLX-150S.
11 more pictures after the jump
Tri-oval definition from Wikipedia:
A tri-oval is a shape which derives its name from the two other shapes it most resembles, a triangle and an oval. Rather than meeting at sharp, definable angles as the sides of a triangle do, in a tri-oval these angles are instead rounded into smooth curves. While an oval has four turns, a tri-oval has an “extra” fifth turn.
UPDATE (1/11/2010): I have found that the real name for this exhaust is AHM M1 Series, after I look at the catalogue at Stormbikers is Shah Alam