Spool Performance BMW S58 Upgraded Stock Location Twin Turbo Kit [1000+HP]

BMW built the S58 to be an incredible engine.
Then they installed turbochargers sized for people who still read the warranty booklet.

If you’ve reached the stage of ownership where 600–700 horsepower feels “basically stock,” congratulations — you’re exactly the type of person this kit was designed for.

The Spool Performance S58 Upgraded Stock-Location Twin Turbo Kit replaces your factory turbos with larger, properly engineered units capable of supporting four-digit horsepower builds while still fitting in the factory turbo location. Because sometimes the best solution is not reinventing the engine bay — just installing turbos that aren’t afraid of real boost.

These turbos are built for enthusiasts who want big power without converting the entire car into a science project. Same stock-location layout, significantly more airflow, and enough headroom to support builds that make your traction control cry.

In other words:
Your S58 finally gets the turbos it deserved from the factory.

Why Upgrade Your Turbos

1000+ HP Capability
Designed to support serious horsepower builds well beyond the limits of the factory turbochargers.

Stock-Location Fitment
Retains the factory turbo placement, simplifying installation and keeping the engine bay layout intact.

Massively Increased Airflow
Larger compressor and turbine design allows the engine to move significantly more air at higher boost levels.

Built for Real Performance Builds
Ideal for upgraded fueling systems, ethanol blends, and aggressive tuning setups.

Because Eventually “Stage 2” Stops Feeling Fast

Key Features

Upgraded twin turbochargers for BMW S58
Stock-location turbo design for direct fitment
Supports 1000+ horsepower capable builds
Engineered for improved airflow and boost capacity
Compatible with high-performance fueling and tuning setups
Designed for serious street and track builds

Vehicle Compatibility

Designed for BMW S58 engines, including models such as:

BMW G80 M3
BMW G82 / G83 M4
BMW G87 M2
BMW X3M / X4M
and other S58-powered vehicles

(Always confirm fitment and required supporting modifications.)

Octane Garage Note

These turbos will not magically make your car faster.

They simply remove one of the major bottlenecks preventing your S58 from becoming an absolute menace.