The ISR Performance test pipes are constructed using high quality stainless steel. These test pipes utilize stock flange locations so they can be used with stock components or aftermarket (Provided they aftermarket components use stock style flanges and mounting locations).
These test pipes will eliminate your catalytic converter, and are designed for off-road use only. Their straight through design will help add the maximum amount of horsepower and torque to your VQ, especially when paired with the ISR Y-pipe and exhaust!
These test pipes will ONLY work for VQ35DE motors, if you have a late model Z33 with the VQ35HR you will need to purchase the Z34 style test pipes.
** All ISR Performance Products are Designed for Off Road Use Only **
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