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VR Performance BMW M5 F90 Titanium Valvetronic Exhaust System VR-F90M5-170T

The VR Performance Titanium Valvetronic Exhaust System is a premium cat-back exhaust engineered for the BMW M5 F90 (2018–2022) with the S63 4.4L twin-turbo V8. 

It is designed to reduce weight, increase exhaust flow, and produce a more aggressive V8 soundtrack while preserving everyday usability through the factory electronic valve system. 

Technical Specifications

• Material: Aerospace-grade titanium
• Configuration: Full cat-back exhaust
• Pipe Diameter: 80 mm (3.15 in) mandrel-bent piping
• Tips: Quad 90 mm burnt titanium tips with VR logo
• Valve Control: Compatible with OEM electronic exhaust valves
• Compatibility: OEM downpipes or aftermarket race downpipes
• Fitment: BMW M5 F90 (2018–2022) 

Engineering Advantages 

1. Lightweight Titanium Construction
Compared with the heavy stainless-steel factory exhaust, titanium substantially lowers rear-end mass, helping:

• Faster weight transfer
• Slightly sharper turn-in
• Reduced rotational inertia
• Improved suspension response over uneven roads

Although peak horsepower gains are modest, the weight reduction contributes to a more responsive driving feel. 

2. Higher Exhaust Flow
The larger 80 mm piping reduces exhaust restriction, allowing the S63’s twin turbochargers to expel gases more efficiently. Benefits include:

• Quicker turbo spool
• Reduced backpressure
• Improved high-RPM breathing
• Better throttle response
• Stronger acceleration after 4,000 rpm 

3. OEM Valve Integration
Unlike some aftermarket systems requiring separate controllers, this exhaust works with BMW’s factory M Modes:

• Comfort: quieter for commuting
• Sport/Sport+: valves open automatically for maximum sound

This maintains factory-like convenience without sacrificing performance. 

4. Titanium Acoustics
Titanium naturally produces:

• Higher-frequency exhaust harmonics
• Sharper V8 growl
• Cleaner turbo whistle
• More exotic tone than stainless steel
• Pronounced overrun pops while avoiding excessive rasp when properly tuned 

Estimated Performance Gains

Actual gains depend on engine calibration and supporting modifications.

Configuration	Estimated Gain
Stock ECU	+10 to +18 hp
Stage 1 tune	+15 to +25 hp
High-flow downpipes + tune	+25 to +40 hp

The most noticeable improvement is the reduction in backpressure and enhanced throttle response rather than dramatic peak power increases.

Advantages

• Excellent titanium craftsmanship
• Significant weight reduction
• Aggressive V8 sound
• OEM valve compatibility
• Compatible with aftermarket downpipes
• Direct bolt-on installation
• High corrosion resistance

Disadvantages

• Premium price
• Titanium can transmit more high-frequency resonance than stainless steel
• Performance gains alone are modest without ECU tuning
• Maximum sound benefits are achieved when paired with upgraded downpipes and calibration

Comparison Against Premium Competitors

Brand	Sound	Weight	Performance	Luxury	Overall
Akrapovic	5	5	5	5	10/10
Valvetronic Designs	5	5	5	5	9.8/10
VR Performance	4.5	4:5	4.5	4.5	9.4/10
Armytrix	5	4.5	4.5	4.5	9.3/10
Milltek	4.5	4	5	4	9.0/10

Verdict

For BMW F90 M5 owners seeking a premium titanium exhaust without reaching the price of an Akrapovič system, the VR Performance VR-F90M5-170T offers an excellent balance of sound, weight savings, OEM integration, and performance. 

It is particularly well suited to Stage 1 and Stage 2 S63 builds, where the freer-flowing cat-back complements ECU tuning and upgraded downpipes while retaining daily drivability.

VR Performance BMW M5 F90 Titanium Valvetronic Exhaust System VR-F90M5-170T