Description

The HKS Hi-Power SPEC-L II for CUP is the definitive, competition-honed exhaust system engineered exclusively for the naturally aspirated Toyota GR86 and Subaru BRZ (FA24 engine). As the lightest stainless steel muffler on the market at just 7.8kg, it delivers a revolutionary 48% weight reduction versus stock, shifting mass toward the vehicle’s center to dramatically improve agility, reduce rotational inertia, and enhance cornering response. Combined with HKS’s meticulously optimized Φ60mm intermediate pipe diameter—the result of exhaustive testing for NA torque and flow efficiency—this system unlocks sharper acceleration, broader power gains, and track-ready performance, all while maintaining critical ground clearance. It is the official designated exhaust for the TOYOTA GAZOO Racing GR86/BRZ CUP (PROFESSIONAL Series).

Product Highlights

⚖️ The Lightest Stainless Muffler Ever – 7.8kg (48% Lighter Than Stock)
Engineered with ultra-thin materials (outer cylinder t0.5~t0.6, pipe t0.8) and a titanium tail tip, this system achieves an unmatched 7.8kg total weight. By relocating the main silencer forward and reducing rear overhang mass, it significantly lowers the yaw moment of inertia for quicker directional changes and more agile handling.

🎯 Optimized Φ60mm Pipe Diameter for Maximum NA Torque
HKS determined the perfect balance of exhaust flow and resistance for the FA24 engine. The Φ60mm intermediate pipe prevents flow restriction while maintaining exhaust velocity, resulting in strong, responsive torque across the entire powerband, especially in the critical 4500–6500 RPM sports driving range.

📈 Proven Performance Gains – More Power & Quicker Acceleration

• Power Increase: +3.0 kW peak power, with torque elevated from 4500–6500 RPM.

• Faster Acceleration: Measured reductions in time-to-target-RPM across 3rd and 4th gears under load, confirming superior real-world acceleration performance.

🏁 TOYOTA GAZOO Racing GR86/BRZ CUP Designated Part
Officially certified and required for competition in the GR86/BRZ CUP (PROFESSIONAL Series), meeting strict series regulations for performance, sound, and safety.

🔧 Intelligent Layout for Maximum Ground Clearance & Stability

• Ground Clearance: Maintains a 140mm minimum clearance at the rear member—7mm more than stock—by routing pipes tightly against the chassis.

• Anti-Interference Design: Integrated brackets suppress pipe movement, preventing contact with the rear member and reducing lateral sway during aggressive driving for a stable, predictable feel.

Technical Specifications

• Product Name: Hi-Power SPEC-L II for CUP

• Model Code: 32016-AT130

• Compatibility: Toyota GR86 / Subaru BRZ (ZN8/ZD8, FA24 engine, 6MT only)

• Material: Stainless Steel (S304) w/ Titanium Tail Tip

• Weight: 7.8 kg (vs. OEM 16.2 kg)

• Intermediate Pipe Diameter: Φ60 mm (Optimized for NA torque)

• Tailpipe Diameter: Φ94 mm

• Exhaust Layout: Single exit, right side

• Ground Clearance (Installed): 140 mm (at rear member pipe)

• Certification: JQR30233151, TRA240319-174

• Not Compatible With: Automatic Transmission (AT) models

Performance Data Summary

• Peak Power: 159.9 kW @ 6,960 RPM (vs. OEM 156.9 kW)

• Peak Torque: 236.7 Nm @ 3,230 RPM (vs. OEM 234.7 Nm)

• Acceleration Improvement: Consistently faster time-to-RPM in 3rd/4th gear under 10/15/20 kW loads.

Installation & Remarks

🔧 Professional Installation Recommended
To ensure proper alignment, bracket tension, and leak-free sealing, installation by a qualified technician is advised.

⚠️ Manual Transmission Only
This system is not compatible with automatic transmission (AT) vehicles.

✅ CUP Competitors
Competitors in the TOYOTA GAZOO Racing GR86/BRZ CUP must use this designated part. Verify current series regulations.

🔩 OEM-Plus Ground Clearance
Layout ensures better under-body clearance than stock, reducing scrape risk during sporty driving or on inclines.