Quick view Apexi A'PEXi - N1 Dual Muffler - 1995-1998 Nissan 240SX (S14) The N1 Dual is a hybrid variation of the N1 exhaust. This system incorporates a twin pipe, twin canister design for improved mid-range torque without sacrificing top end power. The twin pipingĀ is... $1,649.00 Add to Cart