Retain the same peak HP of the single N-1 while improving mid range torque
Mid to high-end power
N-1 Dual Mufflers are a variant of the popular single-tip N-1 Series Mufflers. The N-1 Dual piping splits into two smaller diameter pipes just after the catalytic converter and flow into a pair of 120mm canisters. The canisters are polished off with aggressive 90mm tips. The use of smaller piping diameter helps retain more mid-range torque. The Dual N-1 does not sacrifice peak horsepower because the dual pipes can handle more exhaust gas volume. Piping is treated with high-temperature titanium particle coating, and the canisters and tips are constructed of polished SUS 304 stainless steel. Optional 90mm Super Silencers can be used to reduce noise levels by up to 7 decibels.

APEXi N1-X Evolution Extreme Supra 2020+ Exhaust System

APEXi Part# 164-KT16
Resonated Mid Pipe & Non Resonated Mid Pipe Versions Available

1986-91 Mazda RX-7 Turbo N1 DUAL Cat-back Exhaust

1993-95 Mazda RX-7 Twin Turbo N1 DUAL Cat-back Exhaust

1989-94 Nissan 240SX N1 DUAL Cat-back Exhaust

1995-98 Nissan 240SX N1 DUAL Cat-back Exhaust

APEXi N1-X Evolution Extreme Exhaust Civic Hatchback Sport 17-20

APEXi Part# 164-KH01 N1 Evolution Extreme Muffler (N1-X)
Piping Diameter: 65mm. - 50.8mm. x 2, Tip Diameter: 93mm. x 2

APEXi N1-X Evolution Extreme Exhaust Civic Type-R FK8 17-20

APEXi Part#  N1 Evolution Extreme Muffler (N1-X) Part# 164-KH02
Exhaust Piping diameter 75mm-> 60.5mm x 2. Tip diameter 123mm x 2. Downpipe diameter 70mm.