BMW G29 Z4 M40i & Toyota GR Supra B58 Stage 2 Hardware Package

This great-value Stage 2 Hardware Package has been carefully assembled for BMW Z4 M40i and Toyota GR Supra models equipped with the B58 engine, providing all the essential supporting components required to unlock serious performance potential beyond 500bhp when paired with appropriate software calibration. Each component has been selected for its quality, precise fitment, and proven capability, ensuring reliable performance gains while retaining everyday usability. Designed specifically for OPF-equipped vehicles, this package forms an ideal foundation for a properly developed Stage 2 setup.

Key Features

• Complete Stage 2 hardware solution for B58-powered applications

• Substantially improved intake and exhaust flow

• High-quality, precision-engineered components

• Designed specifically for OPF-equipped vehicles

• Proven hardware combination capable of supporting 500bhp+ with suitable tuning

What’s Included

MST Intake System
The MST intake system for the BMW G29 Z4 and Toyota A90 Supra features a large 4' intake pipe, performance dry nanofibre air filter, and laser-cut heat shield, finished in a durable textured black powder coat. Designed to maximise airflow and reduce intake restriction, this system improves throttle response while delivering a more aggressive induction sound compared to the factory setup. Dyno testing on the B58 platform has shown gains of up to 12–14bhp, while retaining OEM mounting points and the standard turbo inlet pipe.

Scorpion B58 OPF Downpipe – 5' Diameter (Choice of Sports Cat or De-Cat)
This package includes your choice of Scorpion 5-inch diameter downpipe, available as either a high-flow sports catalytic version or a de-cat option. Both variants significantly reduce exhaust back pressure compared to the factory OPF-equipped downpipe, allowing the turbocharger to operate more efficiently and support higher power outputs. Precision-manufactured for exact fitment, these downpipes are a key requirement for any serious Stage 2 B58 build. The decat downpipe has slightly more flow and is less expensive but will definitely not pass vehicle emissions tests.

Scorpion Non-Resonated OPF Delete Midpipe
The Scorpion non-resonated OPF delete midpipe for the BMW G29 Z4 M40i and Toyota GR Supra further improves exhaust flow and delivers a sharper, more purposeful exhaust tone. Designed to integrate seamlessly with the Scorpion downpipe and factory rear exhaust sections, this midpipe completes the Stage 2 exhaust hardware setup.

Fitment Notes

• Designed for OPF-equipped vehicles only

• An engine management light is likely due to OPF and catalyst removal or modification

• Coding or custom ECU tuning is required to address OPF and catalyst-related fault codes

• Exhaust and emissions characteristics are altered

Compatibility

• BMW Z4 M40i (G29) – B58 engine

• Toyota GR Supra (A90) – B58 engine

Important Notice

This hardware package modifies factory emissions components and is intended for off-road use only.