H.S.I. 38mm Mikuni SBN air filter / flame arrestor adapter. The Cyclone Short Stack was made with intention to gain performance like the cyclone tall stacks do, but to come in at a lower cost and still clearances a SuperJet head (common issue of 38mm air filter adapters).
The short stacks are still proven to pull more RPM's over the competing standard air filter adapters. We have tested these air filters and we know they WORK. RPM's don't lie! *For getting top performance - we recommend the Tall Stacks.
Anodized black. Stainless marine grade hardware included.
Note for SuperJet Use: Short Stack allows the air filter to clear the head. Cyclone Short Stack Height = 30mm
*OPTIONAL ADD ON - SBN 38mm flame arrestor gasket.