Nissan Skyline GT-R R34 Exhaust Systems - Complete Parts Catalog
Complete aftermarket exhaust systems catalog for Nissan Skyline GT-R R34 (BNR34). Compare Tomei, HKS, GReddy, Amuse, Blitz exhausts.
R34 GT-R Exhaust Systems Parts Catalog
Welcome to the complete aftermarket exhaust systems catalog for the Nissan Skyline GT-R R34 (BNR34). This comprehensive guide covers everything from cat-back systems to full turbo-back exhausts, helping you choose the perfect setup for your build.
Understanding R34 Exhaust Architecture
The RB26DETT exhaust system consists of three main sections:
- Downpipes (Turbo Outlets) - Connect twin turbos to mid-pipe
- Mid-Pipe (Y-Pipe) - Merges dual exhaust into single or dual exit
- Cat-Back System - From catalytic converter to exhaust tips
Most aftermarket exhausts replace the cat-back section, though some aggressive setups include downpipes for maximum flow.
Performance Levels by Build
| Build Type | Recommended Exhaust | Sound Level | Gains |
|---|---|---|---|
| Street Daily | HKS Hi-Power, GReddy Power Extreme | 88-94 dB | +10-15 hp |
| Street/Track | Tomei Expreme Ti, Blitz Nur-Spec | 92-96 dB | +15-25 hp |
| Track/Race | Amuse R1 Titan, Custom Straight-Pipe | 95-105 dB | +20-30 hp |
Material Comparison
Stainless Steel (304/321)
- Pros: Durable, corrosion-resistant, affordable
- Cons: Heavier than titanium
- Weight: 12-18 kg (26-40 lbs)
- Price Range: $1,000-$2,000
Titanium
- Pros: Ultra-lightweight, exotic appearance, premium sound
- Cons: Expensive, requires expert installation
- Weight: 6-10 kg (13-22 lbs)
- Price Range: $2,500-$6,000
Sound Characteristics Guide
Tone
- Deep/Mellow: HKS Hi-Power (large resonators)
- Aggressive/Raspy: Tomei Expreme Ti (titanium, straight-through)
- Balanced: GReddy Power Extreme (canister muffler)
Volume (dB Levels)
- Street Legal: 85-92 dB (HKS, Blitz with valve closed)
- Spirited: 92-96 dB (Tomei, GReddy, Amuse)
- Race: 96-105+ dB (Straight-pipe, catless)
Drone (Highway Cruising)
- Minimal: HKS Hi-Power, Blitz Nur-Spec (valve closed)
- Moderate: GReddy Power Extreme, Tomei at 2500-3500 RPM
- Significant: Straight-pipe setups, catless downpipes
Installation Considerations
Difficulty Rating
- DIY-Friendly (2/5): Cat-back bolt-on systems (HKS, GReddy, Blitz)
- Moderate (3/5): Turbo-back with downpipes (requires lift)
- Expert (4/5): Titanium systems (precision alignment critical)
Time Estimate
- Cat-Back Only: 2-3 hours (backyard install)
- With Downpipes: 4-6 hours (shop recommended)
- Full Custom Fabrication: 8-12 hours
Tools Required
- Floor jack + jack stands (or lift)
- Socket set (10mm-19mm)
- Penetrating oil (for rusty bolts)
- New gaskets and hardware
- Torque wrench (for flange bolts)
Emissions Compliance
Street Legal Options
- Catted Systems: HKS Hi-Power, GReddy Power Extreme (catalytic converter retained)
- Test Pipe Options: Some brands offer high-flow cats (200-cell)
Track/Off-Road Only
- Catless: Tomei, Amuse (maximum flow, not street legal in most states)
- Straight-Pipe: No mufflers, no cats (race only)
⚠️ Important: Removing catalytic converters is illegal on public roads in most jurisdictions. Check local emissions laws before purchasing.
Exhaust System Comparison Table
| Brand | Model | Material | Weight | Sound (dB) | Tone | Price |
|---|---|---|---|---|---|---|
| Tomei | Expreme Ti | Titanium | 8 kg | 95+ | Aggressive | $2,850 |
| HKS | Hi-Power | Stainless | 16 kg | 88-92 | Deep/Mellow | $1,450 |
| GReddy | Power Extreme | Stainless | 14 kg | 90-94 | Balanced | $1,649 |
| Amuse | R1 Titan | Titanium | 9.5 kg | 92-96 | Exotic | $5,950 |
| Blitz | Nur-Spec | Stainless | 15 kg | 85-93 | Adjustable | $1,050 |
Troubleshooting Common Issues
Excessive Drone
- Cause: Resonance at cruising RPM (2500-3500)
- Solution: Add Helmholtz resonators, upgrade hangers, switch to larger diameter piping
Exhaust Leaks
- Cause: Warped flanges, failed gaskets
- Solution: Replace gaskets, resurface flanges, retorque bolts to spec
Hanging Too Low
- Cause: Weak hangers, aftermarket piping design
- Solution: Upgrade to solid rubber hangers, adjust exhaust routing
Heat Damage to Bumper
- Cause: Tips positioned too close to rear bumper
- Solution: Add heat shields, adjust tip angle, choose recessed tips
Performance Gains vs Stock
Stock BNR34 exhaust is restrictive above 400 hp. Expected gains from aftermarket systems:
- Cat-Back Only: +10-20 hp (mostly top-end)
- With Downpipes: +20-30 hp (turbos spool faster)
- Full Turbo-Back + Tune: +30-50 hp (requires ECU retune)
Affiliate Disclosure
This page contains affiliate links to performance parts retailers. We may earn a commission if you purchase through these links at no additional cost to you. All product recommendations are based on enthusiast community feedback and specifications.
Frequently Asked Questions
Q: Will a louder exhaust fail emissions testing? A: As long as catalytic converters are retained, most systems pass emissions. Sound level regulations vary by state.
Q: Can I install an exhaust without a tune? A: Cat-back exhausts typically don't require tuning. Downpipes or catless setups should be tuned to avoid running lean.
Q: How much weight can I save with titanium? A: 6-10 kg (13-22 lbs) compared to stainless steel systems.
Q: What's the best exhaust for a stock-turbo daily driver? A: HKS Hi-Power or GReddy Power Extreme - great sound without excessive drone.
Q: Do I need a gasket kit? A: Yes, always replace exhaust gaskets during installation. Most kits include them.
Affiliate Disclosure