CSF BMW B58 "No Limit" Billet Air-To-Air Competition Manifold #8401

Unlock the full potential of your B58-powered build with the CSF “No Limit” Billet Air-To-Air Competition Manifold (8401)—a purpose-built solution for extreme power applications. Developed in collaboration with Custom Plenum Creations (CPC), this fully CNC-machined billet intake manifold removes the limitations of factory charge cooler designs, enabling significantly increased airflow, improved cooling strategies and the capability to push beyond 1500+ WHP.

Key Features:

• Fully CNC-machined 6061 billet aluminium construction (CPC, Australia)

• Designed for extreme B58 builds (1500+ WHP capability)

• Eliminates OEM charge cooler restriction for maximum airflow

• Supports Air-to-Air and Air-to-Water intercooler configurations

• CFD-optimised plenum and runner design

• Integrated velocity stacks for improved airflow efficiency

• High-pressure O-ring sealed construction (100+ PSI capable)

• Larger 77mm S55 throttle body compatibility

• Integrated sensor ports and vacuum sources

• Includes billet fuel rail for 6 injector port injection setup

• Modular ports for secondary injection, nitrous or methanol systems

• Includes CSF Thermal Rejection Spacer (up to 15% temperature reduction)

• Supplied with full installation hardware and documentation

Engineered for Maximum Flow & Cooling Efficiency

The CSF “No Limit” manifold removes the integrated charge cooler found in OEM intake designs, eliminating a major airflow restriction. This allows for significantly larger external intercooler systems to be used, dramatically improving intake air temperature control and supporting higher boost levels.

The result:

• Increased airflow capacity

• Lower intake air temperatures (IATs)

• Greater tuning headroom

• Improved high-RPM performance

Advanced Billet Design & CFD Optimisation

Each manifold is precision-machined from solid 6061 aluminium and developed using CFD analysis to ensure:

• Even airflow distribution across all cylinders

• Reduced turbulence and pressure drop

• Improved cylinder efficiency and consistency

• Maximum performance under extreme boost conditions

Integrated velocity stacks further enhance airflow characteristics, improving both response and top-end power.

Race-Proven Performance

The CSF “No Limit” platform has already demonstrated its capability on some of the fastest BMW and B58-powered builds globally. Proven in high-level drag applications such as Texas 2K 2026, this manifold is engineered for builds targeting record-level performance and consistent results under extreme load.

Motorsport-Ready Functionality

Designed for advanced performance builds, the manifold includes:

• Top-feed port injection capability (6 or 12 injectors)

• Modular ports for nitrous or methanol injection

• Dual integrated sensor pads for additional monitoring

• Multiple NPT ports for custom configurations

• Optimised plenum inlet angle for improved intercooler pipe routing

What’s Included?

• CSF B58 Billet Intake Manifold (8401)

• Billet Fuel Rail (6 injector configuration)

• 6 Injector Block-Off Plugs

• Thermal Rejection Manifold Spacer

• Full Installation Hardware Kit and instructions

Optional Add-Ons (Not Included):

• Secondary fuel rail (12 injector setup)

• Nitrous / methanol injection adapter kit

• Custom finishes (powder coat, Cerakote, anodised)

Compatibility – BMW B58 (Gen 1 & Gen 2)

Compatible with a wide range of B58-powered vehicles and builds, including:

• BMW F20 / F21 M140

• BMW F22 / F23 M240

• BMW F30 / F31 / F34 340

• BMW F32 / F33 / F36 440

• BMW G20 / G21 M340

• BMW G22 / G23 / G26 440

• BMW G42 M240 xDrive

• Toyota GR Supra 3.0 (A90/A91)

Also suitable for B58 engine swaps and custom high-performance builds.

Important Information

• Motorsport/off-road use only (not road legal)

• Requires extensive modifications and supporting hardware

• Professional installation strongly recommended

Why Choose CSF?

CSF is globally recognised for engineering high-performance cooling and intake solutions used on some of the most advanced BMW builds. Their collaboration with CPC ensures unmatched precision, durability and performance at extreme power levels.

Why Buy from R44 Performance?

R44 Performance supplies industry-leading BMW performance components, supporting builds from fast road to full race applications.

• BMW performance specialists

• Trusted by high-power builds worldwide

• Fast UK and international shipping

• Expert technical support

Take your B58 build beyond limits with the CSF “No Limit” Billet Air-To-Air Competition Manifold (8401)—engineered for those pushing the boundaries of performance.

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

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All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.