ETS Max Flow Header 2-Bolt Tubing Thickness:Lightweight Reduces the ratio gap from

Reduces the ratio gap from 4th to 5th to improve acceleration

Legacy/Outback 6MT MY10-12

Additional size ranges can be found here:

and the later kit can be used to service all MY08-21 applications without any real issue

All EJ Series Engines

ETS Max Flow Header 2-Bolt Tubing Thickness:Lightweight Reduces the ratio gap fromMAX SCAVENGING & EXHAUST FLOW ETS 304 stainless steel V2 Max Flow Header features large 1 7 8in primary runners feeding a generous 2. 5in secondary via a low angle cast 4 1 merge collector for reduced back pressure and maximum flow capability. Thick wall custom 0. 100in tubing and slip joints ensure durability and ease of fitment. Optional lightweight version features 0. 083in tubing for race applications. Confirmed fitment with IAG and Killer B large