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APEXi N1 Evolution Extreme Exhaust Systems for 2021-2024 IS300, IS350 - 164AKT22
Part Number: APX-164AKT22
APEXi N1 Evolution Extreme Exhaust Systems
Exhaust System, N1-X Evolution Extreme, Axle-back, Dual In/Four Out, Stainless Steel, Natural, Split Rear Exit, Stainless Polished Tips, Lexus, Kit
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Estimated Ship Date: Dec 29, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
164AKT22
Part Type:
Product Line:
Summit Racing Part Number:
APX-164AKT22
System Material:
304 stainless steel
System Style:
Rear axle-back
Exhaust Type:
Dual in/Four out
Exit Location:
Split rear
System Finish:
Natural
Catalytic Converter(s) Included:
No
Intermediate Pipe Diameter (in.):
2.38 in.
Muffler Included:
Yes
Muffler Quantity:
Four
Muffler Configuration:
Single inlet/Single outlet
Muffler Material:
304 stainless steel
Muffler Color:
Polished
Hardware Included:
Yes
Tailpipe Diameter (in.):
1.97 in.
Tip Included:
Yes
Tip Outlet Size (in.):
3.66
Tip Quantity:
4
Tip Shape:
Round
Tip Cut:
Slant
Tip Edge Style:
Rolled edge, double-wall
Tip Material:
304 stainless steel
Tip Color:
Polished
Remanufactured:
No
Quantity:
Sold as a kit.
APEXi N1 Evolution Extreme Exhaust Systems
APEXi N1 Evolution Extreme Exhaust Systems are based on the proven performance basics of the N1 muffler—which emphasizes optimum exhaust efficiency utilizing a straight-thru layout design. They are 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. Many options are available, including muffler quantity, inlet/outlet quantity, and tip material/shape/size. Order the system recommended for your vehicle.
Additional details:
* High level of quality using TIG-welded SUS304 stainless steel, uniting quiet performance with high-power performance gains
* Matched and manufactured for select chassis
* Patented Megaphone piping structure to produce excellent torque and throttle response throughout the powerband. This piping design allows for a swirling exhaust gas flow effect that has for years produced proven results
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