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Your comments, feedback and suggestions: I can improve on the definition for brand product 'Grand Rock - GM-0004-S5SK Turbo Back Single Stack Exhaust System for 5" Grand Rock Stack': TurboBack Single 5"Stack Kit. This system is fabricated with heavy gauge commercial grade aluminized steel. Hardened steel canted and welded “ L” bracket, stainless heavy duty flex pipe and a sturdy clamping system that won't give. The 5” S Pipe is designed for smooth, unrestricted, evenly divided flow, through the stack. Lower your EGTs, gain more horsepower in the power band and boost your over all performance potential. Quality construction for lasting performance and ware.

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