The (4-1 Design) 4 tube merges into a real Merge collector and then through a specialty designed Megaphone at specific location to create an effect to increase HP and Torque. In theory it is how the ramhorn megaphone header make so much more power and torque. This header is design for high compression engines 1.8L-2.1L builds that include intake exhaust stage 2+ cams, head work, ls/vtec or B20/vtec. A motor with 11.0:1 or higher compression E85 is a big plus or use of nitrous.

This header is design for drag race car that runs a straight header but come with V-band that can be fabricated at most muffler shop to run full exhaust if the consumer wishes.

FEATURES:
True 304 Stainless Steel
High Flow REAL merge collector
4 to 1 tubing design with Megaphone to increase power
come with hardware for easy installation

SRS Stainless Steel Headers are made of durable T-304 Stainless Steel and are mandrel-bent to form and fit your application with the best results possible while the thick flanges and strong welds prevent cracking and offer long-lasting durability. These Headers or Turbo Manifolds maximizes its performance by allowing the exhaust gases to flow more efficiently to gain power, horsepower, and performance.

DISCLAIMER: All SRS Exhaust and Suspension products are deemed for "off-road use only"-- check your local laws & regulations regarding the modification of the exhaust system by checking the vehicle code for your state. Many states are stringent on exhaust modification laws to pass SMOG. Again, please be aware of your local laws.

Please see the following link for more information and street-legality information for California residents ONLY: