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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
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