Click to zoom in
SKU: 31019-AT009 | UPC: 4957266912102
HKS 90-93 Toyota Celica All Trac Silent Hi-Power Dual Exhaust - Japanese Spec
The HKS Silent Hi-Power Dual Exhaust system (31019-AT009) is a full cat-back muffler designed exclusively for the 1990-1993 Toyota Celica All Trac (ST185 chassis). This Japanese Domestic Market spec exhaust replaces the stock system from the catalytic converter back with larger diameter piping for improved exhaust flow and power delivery. It balances aggressive performance with reduced noise output ideal for daily driving and track use.
Key Features
- SUS304 Stainless Steel Construction: Full polished 304-grade stainless steel piping and muffler body resists corrosion and ensures long-lasting durability under high-heat conditions.
- Progressive Pipe Diameter: 60.5mm main pipe expanding to 80mm dual outlets boosts exhaust scavenging for measurable gains in horsepower and torque across the RPM range.
- Silent Hi-Power Technology: Internal baffle design achieves 92dB sound level at 4,500 RPM while maintaining high-flow volume of 2.4L for unrestricted power without excessive drone.
- Dual Oval Tips: Stylish JASMA-certified dual oval tailpipes (80mm) provide a clean factory-plus appearance with enhanced visual appeal on the Celica All Trac rear end.
- Lightweight Design: At just 15.0kg (33 lbs), it sheds weight compared to OEM exhaust for better vehicle balance and acceleration response.
Product Notes
- Direct bolt-on replacement for stock cat-back on specified models, no cutting or welding required.
- Inspect hangers and gaskets during install to prevent rattles or leaks.
- Large muffler requires secure mounting, oversized packaging for shipping protection.
Installation Notes
- Professional installation recommended.
- Bolt-on fitment uses factory mounting points, includes all necessary gaskets and hardware.
- Compatible with OEM catalytic converter and hangers, torque clamps to spec for leak-free seal.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1990-1993 | Toyota | Celica | All Trac (ST185 GT-Four) |
| 1990-1993 | Toyota | Celica GT-Four | ST185 (JDM) |
Why Choose HKS?
- HKS leads JDM aftermarket with decades of motorsport engineering experience.
- Every exhaust undergoes dyno testing for proven power and sound refinement.
- JASMA certification guarantees precision manufacturing and regulatory compliance.
Frequently Asked Questions
-
Q: Will this fit US-spec 1990-1993 Celica All Trac models?
A: Yes, designed as direct bolt-on for ST185 chassis All Trac GT-Four, matches US and JDM exhaust routing from cat-back. -
Q: What materials are used in construction?
A: High-grade SUS304 stainless steel throughout piping, muffler, and tips for heat resistance and mirror-polish finish. -
Q: What is the warranty and sound characteristics?
A: HKS offers 1-year limited warranty, sound measures 92dB stock/96dB with silencer removed for versatile street or track use.
Shipping & Handling
- Method: Ground shipping via UPS or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Oversized box approximately 60 x 20 x 20 inches for muffler protection
- Weight: 15.0kg (33 lbs) product weight
Catback
A catback exhaust system replaces everything from the catalytic converter back, covering the mid pipe, muffler, and tailpipe section in one bolt on upgrade. This collection covers catback systems for trucks, Jeeps, muscle cars, imports, and performance SUVs, giving you a straightforward way to improve sound, exhaust flow, and rear end styling without touching the factory catalytic converters or front pipe. Catback systems are available in stainless steel and titanium construction, with dual rear exit, single exit, and quad tip configurations, and a range of sound levels from mild touring tone to aggressive track character. Whether you want a deeper daily driver sound or a full track ready exhaust note, you will find a matched system for your platform here. What This Category Covers This collection includes complete catback exhaust systems, cat-back kits, dual rear exit systems, axle back adjacent catback upgrades, stainless steel and titanium exhaust systems, and street, tourin...
View Catback Products
Exhaust Systems
Performance exhaust systems for cars, trucks, SUVs, and Jeeps are stocked at Black Ops Auto Works. Shop cat-back systems, axle-back systems, turbo-back systems, headers, downpipes, mid-pipes, mufflers, resonators, catalytic converters, exhaust tips, exhaust valve controllers, oxygen sensors, exhaust brakes, and motorcycle and powersports exhausts for Mustang, Camaro, Challenger, Corvette, Silverado, and Super Duty platforms. Every product is filterable by exhaust position, material, pipe diameter, and vehicle year, make, model, and trim so the correct fitment ships the first time. Black Ops Auto Works carries 7,441 exhaust SKUs across every position of the exhaust system. What This Category Covers Exhaust upgrades change sound, appearance, and in some cases power. Exhaust fitment depends on engine, drivetrain, and factory exit position, so confirm the exact platform before ordering any exhaust component. Exhaust Position Cat-back, axle-back, turbo-back, and header-back systems e...
View Exhaust Systems Products
HKS
HKS Japanese performance parts for Toyota Supra, Nissan Skyline GT-R, Nissan Silvia and 240SX, Subaru WRX and STI, and other JDM platforms are stocked at Black Ops Auto Works. Shop turbo kits, cat back exhaust systems, coilovers, blow off valves, and engine management upgrades for RB26DETT, SR20DET, 2JZ-GTE, and EJ series turbocharged engines. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 607 HKS SKUs across forced induction, exhaust, suspension, and engine management categories. What This Collection Covers HKS has built its reputation on Japanese sport compact and sports car performance since the late 1970s, developing turbo kits, exhaust systems, and suspension for platforms including the Toyota Supra 2JZ-GTE, Nissan Skyline GT-R RB26DETT, Nissan Silvia and 240SX SR20DET, and Subaru WRX and STI EJ and FA series engines. This collection brings together fitment verified HKS pa...
View HKS Products