HSI assembled Yamaha BUN Freestyle aluminum exhaust kit.
BUN Freestyle has changed the game with their exhaust chambers that work on a Yamaha based platform (I.E. Dasa, TPE, ET, XScream). This is the same design used for their own manufactured engines - the WAZ engines.
The aluminum chamber is half DRY and half WET. Meaning the front half of the chamber is water jacketed with NO water in the inner chamber, and the back half of the chamber then has water injected inside. This works EXTREMELY well for mid to top power, with plenty of power still being made on the bottom end.
This aluminum chamber is also the LIGHTEST aluminum lay down exhaust in the industry. Weighs in at just under 5 lbs. Pairs with the PFP exhaust manifold.
This kit includes all components that are needed to install this exhaust on your 701+cc Yamaha based engine with you already owning the exhaust manifold. Instructions included.
PLEASE NOTE - This kit does NOT include the Power Factor exhaust manifold, exhaust manifold gasket, or exhaust manifold fittings. Here you can find the COMPLETE SYSTEM.
If the item is not in stock, we will have it soon.
** A charge for shipping / importing from Japan is already added in to the listed price
Part Number: 72-BUN-ALU-KIT