S2000 AP1/AP2 CSO Silent Sport Muffler - Used ~800km, Excellent Condition

This is a CSO Silent Sport muffler for the Honda S2000 (AP1/AP2 chassis). The seller used it for about 800 km and reports no dissatisfaction with performance; it's being sold because they want to try a different exhaust, not due to any fault. They describe the sound as excellent - close to an ASM in exhaust note quality - with no resonance or drone. According to the manufacturer's specs quoted by the seller, this is a non-restrictive, output-focused Φ70mm muffler built from SUS (stainless) material chosen for low heat expansion and good sound absorption, with internal silencer design and a down-tail shaped to reduce sound pressure while improving flow velocity. The flange is compatible with setups running anywhere from the stock catalytic converter to a straight 70mm pipe. Production is tracked with a tag from an ISO-certified factory. The seller notes that new-unit lead times are currently long, so buyers wanting a unit sooner may want to consider this used one.

Seller states no notable scratches or dirt (目立った傷や汚れなし) and reports it was used for approximately 800 km with no performance issues.