GrimmSpeed 2015+ Subaru WRX Equal Length Exhaust Header Shortblocks durability

durability

4 0-5V Analog Inputs

All of these items help to return more power for you to enjoy

The billet material that reinforces the combustion area has been further optimized with our V4 closed deck making it a far superior product to any sleeved block

These are a great option for drag racing

GrimmSpeed 2015+ Subaru WRX Equal Length Exhaust Header Shortblocks durabilityOver the years, GrimmSpeed has proven that our exhaust products are some of the highest quality and best performing in the industry because of the detail oriented approached that we put into their development. When it comes to improving on an OEM design, this attention to detail and overall exhaust knowledge allows us to identify aspects of the factory parts that can be greatly improved upon. One of the first things to note about the OE exhaust