APEXi N1 EVO Cat-Back Exhaust – 2000-2005 Toyota Celica GTS (ZZT231)

Unleash the full potential of the 2ZZ-GE with the APEXi N1 EVO Cat-Back Exhaust — one of the most iconic JDM exhaust systems ever produced, now available for the 2000–2005 Toyota Celica GTS (ZZT231). The N1 EVO’s 60mm mandrel-bent piping and 90mm tip deliver improved exhaust flow, a distinctive high-revving exhaust note that complements the 2ZZ-GE’s VVTL-i lift engagement, and the unmistakable APEXi build quality that has made the N1 EVO a benchmark in the JDM performance exhaust market for decades.

Key Features:

• APEXi N1 EVO design — one of the most iconic and respected JDM cat-back exhaust systems in the enthusiast community
• 60mm piping diameter — mandrel-bent stainless steel piping for improved exhaust flow over the factory system
• 90mm tip diameter — large-diameter polished tip for an aggressive, purposeful appearance
• Application-specific fitment — engineered for the 2000–2005 Toyota Celica GTS (ZZT231) with 2ZZ-GE engine
• Cat-back system — replaces the factory exhaust from the catalytic converter back for a complete rear exhaust upgrade
• APEXi quality construction — stainless steel construction for long-term durability and corrosion resistance

Performance Benefits:

• Improved Exhaust Flow: 60mm mandrel-bent piping reduces exhaust backpressure versus the factory system, improving exhaust scavenging and power output across the RPM range
• High-RPM Performance: Reduced exhaust restriction benefits the 2ZZ-GE’s high-revving character — particularly above the VVTL-i lift engagement point where the engine’s power delivery intensifies
• Exhaust Note: The N1 EVO delivers a distinctive, aggressive exhaust note that complements the 2ZZ-GE’s high-revving character — a sound that builds with RPM and rewards the driver who uses the full rev range
• Weight Reduction: Stainless steel construction is lighter than the factory exhaust system, contributing to a modest reduction in overall vehicle weight
• Tuning Headroom: Reduced exhaust restriction provides additional headroom for ECU tuning to optimize for the improved flow

Specifications:

• Brand: APEXi
• Part Number: 162AT033
• System Type: Cat-back exhaust
• Piping Diameter: 60mm
• Tip Diameter: 90mm
• Material: Stainless steel
• Application: 2000–2005 Toyota Celica GTS (ZZT231) — 2ZZ-GE engine

Fitment Information:

• 2000–2005 Toyota Celica GTS (ZZT231) — 2ZZ-GE engine
• Note: This exhaust is for the Celica GTS (2ZZ-GE) only — not compatible with the Celica GT (1ZZ-FE). Verify your specific model before ordering.
• Installation: Professional installation recommended
• Tune: ECU tune recommended to take full advantage of improved exhaust flow

What’s Included:

• APEXi N1 EVO cat-back exhaust system (162AT033)
• All mounting hardware and gaskets
• Installation instructions

Installation Notes:

• Professional installation recommended
• Allow the factory exhaust to cool completely before removal
• Apply anti-seize to all exhaust fasteners before installation
• Inspect all gaskets and replace if worn or damaged
• An ECU tune is recommended after installation to optimize for the improved exhaust flow

The APEXi N1 EVO Legacy:

The APEXi N1 EVO is one of the most recognized and respected exhaust systems in JDM performance history. Originally developed for motorsport applications, the N1 EVO’s combination of mandrel-bent stainless piping, large-diameter tip, and distinctive exhaust note made it a defining product of the JDM tuning era — seen on everything from Honda Civics and Integras to Subaru WRXs and Toyota Supras. Decades after its introduction, the N1 EVO remains a benchmark for JDM exhaust quality and a sought-after upgrade for enthusiasts who want authentic JDM character on their builds.

The 2ZZ-GE Engine:

The Toyota 2ZZ-GE is one of the most celebrated naturally aspirated four-cylinder engines in JDM history — a 1.8-litre unit co-developed by Toyota and Yamaha that features VVTL-i variable valve timing and lift. Below approximately 6,200 RPM, the 2ZZ-GE operates on a mild cam profile for smooth, efficient power delivery. Above the lift engagement point, the engine switches to a high-lift cam profile that transforms its character — delivering a surge of power and a dramatic change in exhaust note that rewards drivers who use the full rev range to the 8,200 RPM redline. The APEXi N1 EVO’s 60mm piping and reduced backpressure complement the 2ZZ-GE’s high-revving nature, improving exhaust flow precisely where the engine needs it most — at high RPM above lift engagement.

The ZZT231 Celica GTS Platform:

The 2000–2005 Toyota Celica GTS (ZZT231) is one of the most beloved front-wheel-drive sports cars of its generation — a lightweight, sharp-handling platform powered by the 2ZZ-GE’s unique high-revving character. The ZZT231 has a passionate enthusiast following and a strong aftermarket ecosystem, particularly in the JDM performance community. The APEXi N1 EVO is one of the most authentic and desirable exhaust upgrades available for the platform — a combination of legendary brand, proven performance, and a sound that perfectly suits the 2ZZ-GE’s character.

Why APEXi?

APEXi has been producing performance parts for Japanese sports cars since 1992, with a product lineup that spans exhaust systems, intake systems, engine management, and suspension components. Their N1 EVO exhaust lineup is one of their most iconic products — trusted by enthusiasts and professional tuners worldwide for its build quality, performance improvement, and distinctive sound character.

Perfect For:

• 2000–2005 Toyota Celica GTS (ZZT231) owners seeking an authentic JDM exhaust upgrade
• 2ZZ-GE builds wanting improved exhaust flow and a high-revving exhaust note that complements the engine’s VVTL-i character
• Enthusiasts who want the legendary APEXi N1 EVO on their Celica GTS build
• Track day and autocross builds seeking reduced exhaust backpressure and improved high-RPM performance
• Anyone building a period-correct JDM-inspired Celica GTS with authentic Japanese performance parts

Pro Tip: The 2ZZ-GE’s VVTL-i lift engagement is one of the most dramatic and rewarding moments in any naturally aspirated engine — the N1 EVO’s exhaust note above lift makes it even more so. Keep the revs high and enjoy the full rev range to 8,200 RPM.

Note: GTS (2ZZ-GE) fitment only — not compatible with the Celica GT (1ZZ-FE). Verify your model before ordering.