Overview of the Akrapovic GR86 Exhaust System

The Akrapovic GR86 exhaust system is widely regarded as one of the premier aftermarket upgrades for the Toyota GR86 and Subaru BRZ platforms. Designed in Slovenia and handcrafted from high-grade titanium and carbon fiber, this exhaust system aims to deliver a noticeable increase in power, a deeper exhaust note, and a significant reduction in weight. Unlike many budget options, Akrapovic focuses on precision engineering with TIG-welded joints and a slip-fit design that simplifies installation. The system is available in several configurations, including a cat-back and a more aggressive Evolution line, allowing owners to choose the level of sound and performance that suits their driving style. For enthusiasts seeking a premium upgrade that balances daily drivability with track-day excitement, the Akrapovic exhaust represents a top-tier choice.

Key Features and Specifications

Material and Construction

The Akrapovic GR86 exhaust is primarily constructed from lightweight titanium, which offers exceptional strength-to-weight ratio and resistance to corrosion and heat discoloration. The muffler canister often features a carbon-fiber heat shield and tip finisher, adding both aesthetic appeal and thermal protection. The header and mid-pipe options in the Evolution line are also available in titanium or stainless steel, but the signature lightweight model uses full titanium throughout. Every weld is TIG-welded and meticulously finished, ensuring long-term durability even under high thermal stress.

Weight Reduction

One of the most compelling advantages of the Akrapovic exhaust is the dramatic weight savings. A factory GR86 exhaust system weighs approximately 40–45 pounds (18–20 kg). Swapping to the Akrapovic slip-on cat-back titanium system reduces that to roughly 18 pounds (8 kg), saving around 22–27 pounds. The full Evolution titanium system can save even more weight, especially when paired with a titanium front pipe. This unsprung weight reduction improves suspension responsiveness and contributes to a more agile feel during cornering.

Design and Aesthetics

The exhaust features a sleek, aggressive design with a polished titanium finish that develops a unique blue-purple patina over time when exposed to heat. The carbon-fiber tip finisher and optional muffler heatshield add a motorsport-inspired look that complements the GR86’s sporty lines. The dual outlets are perfectly sized to fill the rear bumper cutouts, and the system sits flush without protruding awkwardly. For those who prefer a more subtle appearance, Akrapovic also offers a stainless steel version with a brushed metal finish.

Sound Characteristics

The Akrapovic exhaust delivers a deep, throaty growl that is distinctly more aggressive than stock but avoids excessive rasp or drone. The sound profile is tuned to be refined at idle and low RPM around town, then opens up to a purposeful roar under hard acceleration. This exhaust uses a Helmholtz resonator design to cancel unwanted frequencies, ensuring that highway cruising remains comfortable without fatiguing cabin resonance. Many owners describe the tone as “exotic” due to the titanium’s natural harmonics.

Installation Process

Tools Required

Installing the Akrapovic cat-back exhaust is straightforward for a DIY enthusiast with basic mechanical skills. You will need a socket set (most bolts are 12mm, 14mm, and 17mm), a torque wrench, penetrating oil (e.g., WD-40), jack stands, and a breaker bar. The system uses heavy-grade slip-fit connections with spring-loaded bolts, which eliminates the need for cutting or welding.

Step-by-Step Overview

The installation begins by safely lifting the rear of the car and supporting it on jack stands. Remove the stock exhaust by unbolting the mid-pipe hangers and the flange at the front pipe. The factory hanger bushings can be reused or replaced with stiffer ones for improved fitment. Slide the Akrapovic exhaust into place from the rear, loosely fitting all connections, then tighten in sequence – first the front flange, then the mid-pipe clamp, and finally the muffler section. Akrapovic provides detailed instructions with torque specs (typically 25–30 Nm for springs). Total time is usually 45–90 minutes for a first-timer.

Potential Challenges

Some users report that the stock rubber hangers are slightly stretched with the Akrapovic system, requiring gentle persuasion or lubrication to fit. If your car is driven in winter salt conditions, the bolts on the front pipe may be corroded and need penetrating oil and patience. Akrapovic supplies all necessary hardware, but extra care should be taken not to overtighten the clamp bolts – titanium can be damaged if excessive torque is applied. Overall, installation is rated as an easy 3 out of 5 difficulty.

Performance Gains

Dyno-Proven Results

Independent dyno tests on both the Toyota GR86 and Subaru BRZ have confirmed that the Akrapovic cat-back exhaust yields modest but consistent power gains. On a standard 93 octane calibration, a typical increase of 5–8 horsepower and 4–6 lb-ft of torque is seen at the wheels, with the peak gains occurring around 5,500–6,500 RPM. When paired with a cold-air intake and a quality tune, the system can support gains up to 12–15 whp. While these numbers may seem small, the improved throttle response and quicker rev-matching are immediately noticeable behind the wheel.

Throttle Response and Power Delivery

The exhaust flow optimization reduces backpressure, allowing the FA24 engine to breathe more freely. This results in a sharper throttle tip-in and a more linear power curve. The mid-range torque is enhanced, making the GR86 feel punchier during daily driving and spirited canyon runs. The reduction in weight also contributes to a faster spool-up feel, though the naturally aspirated engine benefits predominantly from reduced exhaust restriction rather than forced induction-style gains.

Effect on Fuel Economy

Under normal driving conditions, the Akrapovic exhaust has a negligible impact on fuel economy. Because the engine can expel exhaust gases more efficiently, some owners report slight improvements of 1–2 MPG on highway cruising. However, aggressive driving with a louder exhaust can offset any gains. The system is emissions-legal in all 50 states as it does not delete catalytic converters or oxygen sensor ports.

Sound Quality

Cold Start and Idle

Upon a cold start, the Akrapovic exhaust produces a noticeable but civilized bark that settles to a low, rumbling idle within 30 seconds. The exhaust is notably louder than stock but still within acceptable levels for residential neighborhoods. The idle contains a pleasant burble without the popping or backfiring that some aftermarket systems produce unless you add an aftermarket tune.

Driving Noise Levels and Drone

Inside the cabin at 60–70 mph, the exhaust is only slightly louder than factory, with minimal drone – a key advantage of Akrapovic’s resonator design. When you press the throttle, the sound builds progressively from a deep bass to a metallic snarl at redline. The titanium material adds a high-frequency crispness that many enthusiasts find addictive. For those who want even more aggression, Akrapovic offers a removable db killer insert that can be easily swapped for track days.

Comparison with Competitors

Compared to the HKS Hi-Power Spec-L (which leans towards a deeper, more bass-heavy tone) or the Borla S-Type (which has a slightly louder bark with some drone), the Akrapovic strikes a balance between refinement and sportiness. The GReddy RS-Racing produces more volume but lacks the precise tonal quality of the Akrapovic. Many owners choose the Akrapovic specifically because it avoids the “boy racer” reputation while still delivering an aggressive exhaust note.

Comparative Analysis

Versus Stock Exhaust

The factory GR86 exhaust is deliberately muted to meet global noise regulations and keep the car civilized for daily use. It uses restrictive bends and heavy sound-dampening materials. In contrast, the Akrapovic system reduces weight by more than half, frees up airflow, and delivers a vastly more engaging sound. The price difference, however, is significant – the Akrapovic system costs around $1,800–$2,500, while the stock exhaust has no cost to the owner. For enthusiasts who value performance and auditory feedback, the upgrade is transformative.

Versus Other Aftermarket Options

In the $1,500–$2,500 price bracket, the main competitors are the HKS Hi-Power, Borla S-Type, GReddy, and Injen. The Akrapovic stands out for its titanium construction, weight savings, and premium build quality. Borla uses stainless steel and sounds louder but is heavier. HKS offers a dual-walled tip aesthetic but uses heavier steel. For the weight-conscious track enthusiast, the Akrapovic titanium system is unmatched. However, if budget is a primary concern, the HKS or Injen are strong alternatives at half the cost.

Value for Money

Akrapovic commands a premium price due to its materials, R&D, and racing pedigree. For the GR86/BRZ platform, the system is priced similarly to high-end systems for German sports cars. While you can achieve similar power gains with a $600 cat-back from a lesser-known brand, the quality, fitment, and exclusivity of the Akrapovic are difficult to replicate. Owners who intend to keep their car for many years often consider it a worthwhile investment in driving pleasure and resale value.

Customer Feedback and Real-World Reviews

On owner forums such as FT86Club and the GR86.org community, the Akrapovic exhaust consistently receives high marks. Common praise includes the perfect fitment (no rattles or misalignment), the authoritative sound, and the weight savings. A typical review from a long-term owner states: “I’ve had the exhaust for 15,000 miles and it still sounds incredible – no rust, no drooping, just pure enjoyment.”

Some criticism is directed at the price – a few owners feel that the sound is not loud enough compared to cheaper systems. A vocal minority reports that the carbon-fiber tip finisher can discolor over time if driven hard, though Akrapovic includes a warranty that covers manufacturing defects. Overall, the system enjoys a 4.7 out of 5 star average across major retailers and forum polls.

Pros and Cons

  • Pros: Lightweight titanium construction; significant weight savings (up to 27 lbs); deep, refined sound without drone; TIG-welded precision; easy installation; premium fit and finish; available carbon-fiber accents; emissions-legal.
  • Cons: High price point ($1,800–$2,500); modest power gains without a tune; premium finish can discolor if not maintained; some owners may want a louder sound; not all versions include a carbon-fiber tip.

Conclusion: Is It Worth It?

The Akrapovic GR86 exhaust system is an exceptional aftermarket upgrade that delivers on its promises of weight reduction, improved sound quality, and enhanced driving engagement. While the power gains are modest compared to other modifications, the combination of premium materials, exacting craftsmanship, and a refined exhaust note make it a standout choice for the GR86 and BRZ community. If you value build quality and exclusivity and are willing to invest in a true premium product, the Akrapovic exhaust is undeniably worth the premium. For more detailed specs and ordering, visit the official Akrapovic website or check independent dyno charts on tuningtech.com for verified horsepower figures. Whether you’re a weekend track warrior or a daily driver seeking extra character, this exhaust will transform your GR86 into a more thrilling machine.