HKS Silent Hi-Power Cat-Back Exhaust System - Toyota Supra JZA70 (1986-1993)

Name: Supra 86-93 HKS Silent Hi-Power Catback
Brand: HKS
SKU: 31019-AT004
Price: 1535 EUR
Availability: InStock

The HKS Silent Hi-Power Cat-Back Exhaust System is designed for the Toyota Supra JZA70, combining enhanced performance with a deep, sporty exhaust note and excellent everyday driving comfort. Engineered to optimize exhaust flow and improve engine response, it is an ideal upgrade for both street-driven vehicles and performance-oriented builds.

The straight-through design, featuring an 85 mm main pipe, reduces back pressure and improves exhaust flow, allowing the engine to breathe more efficiently. This results in improved throttle response, more efficient cylinder scavenging, and a broader, more usable powerband while preserving the iconic exhaust character of Toyota’s legendary inline-six engine.

The system incorporates HKS Silent Hi-Power Technology, which minimizes low-frequency cabin noise and unwanted resonance without compromising performance. The result is a deep, sporty exhaust note while maintaining excellent comfort during everyday driving and long-distance cruising.

Manufactured from SUS304 stainless steel, the exhaust system offers outstanding heat resistance, excellent corrosion resistance, and long-lasting durability. The large 120 mm polished exhaust tip, combined with the 85 mm main pipe, ensures unrestricted exhaust flow while giving the vehicle the signature HKS appearance.

The system is JASMA-certified, ensuring compliance with Japanese noise regulations, and is designed as a direct replacement for the factory exhaust system with OEM-style fitment for straightforward installation.

Features

Fits the Toyota Supra JZA70 (1986–1993).
Complete Silent Hi-Power cat-back exhaust system.
Manufactured from SUS304 stainless steel.
Straight-through design with an 85 mm main pipe.
120 mm polished exhaust tip.
Reduced back pressure and improved exhaust flow.
Improved throttle response, more efficient cylinder scavenging, and a broader, more usable powerband.
HKS Silent Hi-Power Technology reduces cabin noise and unwanted resonance.
Deep, sporty exhaust note.
JASMA-certified.
Direct replacement with OEM-style fitment.

Product video

Technical specification

Article nr:

31019-AT004

Manufacture Partnumber:

31019-AT004

In October 1973, two talented and young engineers had a vision; to design and build high performance engines and components that major OE manufacturers could not, or would not, produce. HKS pioneered the Japanese aftermarket industry by delivering a host of exciting new products, including the first commercially available electronic turbo timer and boost controller. Other early products included piggy-back ECUs and sophisticated fuel management tools. HKS was clearly driving performance trends for Japanese vehicles forward!

Today, HKS is one of the world's most well-known brands and the obvious choice for you who builds a JDM car. In the assortment you will find everything from chassis products to exhaust systems and turbo kits. HKS is behind some of the coolest builds and professional drivers in the world, so when you choose HKS, you choose the best.