Perrin 4-2-1 Headers from HorsepowerFreaks

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Perrin 4-2-1 Headers

Equal Length Design
The equal length design of the PERRIN header, gives you the best of two worlds. Smoother flow of exhaust to the turbocharger allows turbo to spool quicker giving you horsepower and torque are increases thought the entire RPM band. Designed to fit to the factory uppipe, the header will mate with an OEM or aftermarket uppipe, as well as any rotated turbo kits compatible with the factory header.

Slip Joints
Slip fit joints are used to allow the header to expand and contract under extreme conditions. Slip joints are very tough & durable compared to fragile flex joints which are sometimes constructed of weaker metals. Constructed of 100% 304 stainless steel ensures your headers will last a long time!

Stainless Steel Flanges
PERRIN Flanges are CNC machined from 304 stainless steel and counterbored on the back side to make smoother transitions from heads to tubing and header to uppipe.

Port Matching
Flange ports sized properly to ensure exhaust coming out of the head has a smooth unobstructed path to the tubes. The ports are not over ported which causes gaskets to burn out quickly.

Oil Pan Spacing
Most headers collect on the passenger side of the engine, and due to space constraints, are not equal length, compromising exhaust flow. Because we use the added room provided by the oil pan, we can create a smooth transition of the header primaries to the collectors, and collectors to uppipe, providing more power and torque then the competition.

Sound
Because of it equal length design, the PERRIN header will alter the tone of your exhaust. The exhaust pulses from the engine are equalized and spread out producing a smoother, more refined sound. Some describe the sound to be EVO like similar to an inline four cylinder engine exhaust.