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Tail outside diameter: 120. Pipe diameter: 75. Proximity exhaust sound/ Normal: 88dB HKS: 91dB. http://www.hks-power.co.jp/en/product_db/muffler/db/3891

For NOTE NISMO, E12KAI, HR16DE engine, MY 10/2014 - Features: High quality sound. Sport exhaust system with reduced noise level. Silent Hi-Power mufflers offer high performance and sporty appearance with the added benefit of reduced noise levels making it the best choice for more mature enthusiasts. Silent Hi-Power mufflers are constructed entirely of SUS304 grade stainless steel for high lustre, long lasting performance. For certain applications, HKS has introduced the "Silent Chamber" which removes a lot of the lower frequency noise that can often be heard into the cabin even when cruising. The silent chamber removes this uncomfortable noise but due to its closed end design, only a minimal amount of exhaust gas flows into it, meaning that the disruption to exhaust gas flow through the entire system is minimized and there is no harm to performance.

Tail outside diameter: 120. Pipe diameter: 75. Proximity exhaust sound Normal: 87dB HKS: 93dB

Remarks - Do not use with Racing Suction (Reloaded). For ARISTO, JZS161, Engine 2JZ-GTE, MY 08/1997 - 07/2005 Features: - With Super SQV Kit, blow-off air will return to suction like stock air bypass valve to be street legal. - Although blow off sound will be reduced, more sound will come out from air cleaner.

Remarks - Do not use with Racing Suction (Reloaded). For SUPRA, JZA80, Engine 2JZ-GTE, MY 06/1993 - 08/2002 Features: - With Super SQV Kit, blow-off air will return to suction like stock air bypass valve to be street legal. - Although blow off sound will be reduced, more sound will come out from air cleaner.

Remarks - Do not use with Racing Suction (Reloaded). For MARK II, JZX100, Engine 1JZ-GTE, MY 09/1996 - 10/2000 Features: - With Super SQV Kit, blow-off air will return to suction like stock air bypass valve to be street legal. - Although blow off sound will be reduced, more sound will come out from air cleaner.

Features: - With Super SQV Kit, blow-off air will return to suction like stock air bypass valve to be street legal. - Although blow off sound will be reduced, more sound will come out from air cleaner.

Features: - With Super SQV Kit, blow-off air will return to suction like stock air bypass valve to be street legal. - Although blow off sound will be reduced, more sound will come out from air cleaner.

For MAZDA SPEED AXELA, BL3FW, Engine L3-VDT, MY 06/2009 - Features: - With Super SQV Kit, blow-off air will return to suction like stock air bypass valve to be street legal. - Although blow off sound will be reduced, more sound will come out from air cleaner.

For MAZDA SPEED AXELA, BK3P, Engine L3-VDT, MY 06/2006 - 05/2009 Features: - With Super SQV Kit, blow-off air will return to suction like stock air bypass valve to be street legal. - Although blow off sound will be reduced, more sound will come out from air cleaner.