The aFe Power Twisted Steel Long Tube Unequal Header is engineered for select Subaru WRX, STI, Legacy GT, and Forester XT models. This system is constructed from robust SUS304 stainless steel, ensuring optimal durability and corrosion resistance. Its unequal length design specifically accentuates the iconic Boxer engine rumble. Mandrel-bent 1-5/8" to 2-1/2" tubing optimizes exhaust flow, significantly increasing turbo spool. This design directly translates to improved horsepower, torque, and throttle response while effectively reducing turbo lag. Precision laser-cut flanges guarantee a durable, leak-free seal for sustained performance. Each header is 100% TIG-welded, providing superior strength and structural integrity. This component is a direct bolt-on solution, seamlessly integrating with stock or stock-location uppipes without requiring modifications to the factory exhaust system. To maximize performance gains, consider a custom e-tune from Migtuned tailored specifically for your vehicle's year and model.

                  
                                          
                        
Material
                        
304 Stainless Steel
                      
                                          
                        
Design
                        
Unequal Length
                      
                                          
                        
Tubing Construction
                        
1-5/8" to 2-1/2" Mandrel-Bent Brushed Tubing
                      
                                          
                        
Welding Process
                        
100% TIG-Welded
                      
                                          
                        
Flange Type
                        
Laser Cut
                      
                                          
                        
Compatibility
                        
Works with Factory Exhaust System
                      
                                          
                        
Installation
                        
No Modifications Necessary
                      
                                          
                        
Performance Benefit
                        
Optimizes Exhaust Flow, Increases Spool
                      
                                          
                        
Engine Output
                        
Improves Horsepower and Torque
                      
                                          
                        
Response Time
                        
Improves Throttle Response, Reduces Turbo Lag
                      
                                          
                        
Exhaust Note
                        
Aggressive Exhaust Rumble