N1-X Evolution Extreme Resonated Exhaust System for Toyota Supra A90 (164-KT16) 1620 Seibon stands behind its products

Seibon stands behind its products with careful quality inspections and replacement policies for clear coat defects

Corrects steering wobble issues often seen with OE dampers

525 LPH 70-74 Challenger Hellcat Fuel Tank

Lower pressure drop than stock at every flow rate

N1-X Evolution Extreme Resonated Exhaust System for Toyota Supra A90 (164-KT16) 1620 Seibon stands behind its productsThe N1 Evolution Extreme is based on the proven performance basics of the N1 muffler which emphasizes optimum exhaust efficiency utilizing a straight thru layout design. Equipped with an internal hybrid silencer uniting power and free flowing characteristics with effective functional sound resonance. A newly adopted muffler tip completes the tail end of the exhaust that serves both purposes of function and form. Constructed with a light weight