Description
The BMW Z4 M40i is one of the purest expressions of BMW's legendary B58 turbocharged inline-six engine. Combining rear-wheel-drive dynamics, lightweight roadster engineering, and exceptional power delivery, the G29 Z4 M40i offers an exhilarating driving experience. However, the factory exhaust system restricts exhaust flow and suppresses much of the engine's true character.
The Yonristic Performance Exhaust System has been engineered to eliminate these factory limitations, delivering significantly improved airflow, enhanced throttle response, a more aggressive exhaust note, and the performance headroom required for future modifications. Whether your Z4 remains stock or features upgraded downpipes, ECU tuning, or larger turbochargers, this system is designed to maximize efficiency and driving enjoyment.
Advanced High-Flow Exhaust Architecture
At the heart of the Yonristic system is a massive 3.5-inch high-flow midpipe specifically designed to remove the restrictive bottlenecks found in the factory exhaust system.
The oversized midpipe transitions into dual 2.75-inch rear sections through a precision-cast Y-collector. This advanced collector design ensures smooth exhaust gas distribution while minimizing turbulence and pressure loss throughout the system.
The result is increased exhaust flow capacity, improved turbocharger efficiency, faster spool times, and enhanced engine responsiveness across the entire RPM range.
Performance Benefits
- Increased exhaust flow efficiency
- Reduced exhaust backpressure
- Improved turbo spool characteristics
- Enhanced throttle response
- Stronger mid-range acceleration
- Increased horsepower and torque potential
- Optimized for tuned and modified B58 engines
True Quad-Exit Performance Design
Unlike the factory faux-quad setup, the Yonristic Performance Exhaust features a genuine quad-exit configuration designed to enhance both appearance and acoustics.
The dual-branch rear section creates improved exhaust pulse separation, producing a more aggressive and exotic sound signature while giving the rear of the Z4 a motorsport-inspired appearance.
The true quad-tip layout perfectly complements the sporty design of the G29 platform and provides a noticeable visual upgrade over the OEM system.
Aggressive B58 Sound with Everyday Refinement
The Yonristic Exhaust System has been carefully tuned to deliver the unmistakable sound of BMW's B58 engine without introducing excessive drone or cabin discomfort.
With the valves closed, the system remains refined and comfortable for daily driving. Open the valves and the exhaust transforms into a deep, aggressive soundtrack that fully showcases the turbocharged inline-six's performance character.
Sound Characteristics
- Deep and sporty B58 exhaust tone
- Enhanced turbocharger acoustics
- Aggressive acceleration sound
- Refined highway cruising
- Minimal cabin drone
- Rich cold-start presence
- Balanced volume throughout the RPM range
OEM Valve Integration with Optional Remote Control
The exhaust system maintains full compatibility with BMW's factory electronic valve operation, preserving all original driving mode functionality.
For additional customization, an optional Yonristic Remote Valve Control Module allows drivers to manually open or close the valves on demand, regardless of the selected drive mode.
Valve Control Features
- Full OEM valve compatibility
- Retains factory Comfort and Sport mode functionality
- Optional remote valve control module
- Immediate valve response
- Enhanced sound customization
- Seamless integration with factory electronics
Premium Material Options
AISI 304 Stainless Steel
Constructed from premium-grade AISI 304 stainless steel, this option delivers exceptional corrosion resistance, durability, and long-term reliability while offering outstanding value for performance enthusiasts.
6AL-4V Aerospace-Grade Titanium
For those seeking maximum performance and exclusivity, the optional titanium system provides up to 60% weight reduction compared to OEM while delivering a sharper, more exotic exhaust note and superior heat resistance.
Material Benefits
AISI 304 Stainless Steel
- Outstanding durability
- Corrosion-resistant construction
- Ideal for daily driving
- Long service life
6AL-4V Titanium
- Aerospace-grade material
- Up to 60% lighter than OEM
- Improved vehicle dynamics
- Exotic titanium sound signature
- Superior thermal properties
Premium Exhaust Tip Options
Complete your build with genuine quad 4-inch performance exhaust tips available in multiple premium finishes.
Available Tip Finishes
- Chrome Polish
- Burnt Titanium Style
- Satin Black
- Forged Carbon Fiber
Each finish is designed to complement the Z4's modern performance styling while providing a distinctive visual signature.
Vehicle Compatibility
Compatible with:
- BMW Z4 M40i (G29)
- Model Years: 2019-Present
- Engine: BMW B58 3.0L Turbocharged Inline-Six
Technical Specifications
Vehicle Platform:
BMW Z4 M40i G29
Engine:
BMW B58 3.0L Turbocharged Inline-Six
Exhaust Configuration:
3.5-Inch Midpipe → Precision-Cast Y-Collector → Dual 2.75-Inch Rear Section
Exhaust Layout:
True Quad-Exit Design
Material Options:
- AISI 304 Stainless Steel
- 6AL-4V Aerospace-Grade Titanium
Construction Methods:
- CAD Designed
- 3D Scanned Development
- Mandrel-Bent Tubing
- Precision-Cast Collector
- Hand TIG-Welded Assembly
Valve Control:
OEM Compatible + Optional Remote Controller
Tip Size:
Quad 4-Inch Performance Tips
Tip Finishes:
Chrome, Burnt, Satin Black, Forged Carbon Fiber
Direct Bolt-On Installation
The Yonristic Z4 M40i Exhaust System is designed as a direct replacement for the factory exhaust, utilizing OEM mounting locations and valve motors.
Installation Features
- 100% bolt-on installation
- No cutting required
- No welding required
- Factory valve motor transfer
- OEM mounting point compatibility
- Professional installation recommended
Why Choose Yonristic Performance?
Every Yonristic exhaust system is developed to provide the perfect balance of performance, sound quality, craftsmanship, and reliability. Designed and manufactured with precision, our systems deliver exceptional results for both stock and heavily modified BMW platforms.
Included Benefits
- In-House Engineering & Manufacturing
- Premium Materials & Construction
- OEM-Level Fitment
- Satisfaction Guaranteed
- Free Nationwide Shipping
- Dedicated Customer Support
- Built for Future Performance Upgrades
Experience the true voice of the BMW B58 engine with the Yonristic Performance Exhaust System for the BMW Z4 M40i G29 — the ultimate combination of sound, performance, and precision engineering.
