4" Slant Roll Muffler Tip Exhaust Catback System For 09-15 370Z Z34 3.7L V6 DOHC Product_Coilover Springs Kit Length: 4"

Length: 4"

Effective Diameter Range: 1-9/16" - 2-1/4" (40mm-57mm)

No modification is required

Technical Specification: SAE # 16

If your car does not have a electric windows then you have a car window crank handle on your door

4" Slant Roll Muffler Tip Exhaust Catback System For 09-15 370Z Z34 3.7L V6 DOHC Product_Coilover Springs Kit Length: 4"Upgrading vehicle exhaust system is a great way to build horsepower, free up trapped torque, and improve upon restrictive factory systems. The larger pipes, low restriction mufflers, and tuned resonators of a well designed performance exhaust system can make a world of difference on your vehicle. The net result is lower auto exhaust backpressure, more horsepower, more torque, and a much better sound.