2016 BMW X4 M40i Performance Parts

Please email, fax or take a photo of the completed form. Active Autowerke offers unparalleled performance software. Through careful remapping of the factory BMW DME tables, various elements such as ignition timing, fuel delivery, and part throttles are reworked to create performance gains. The...

Billet Top Hat Bulkhead Fittings Upgrade your fuel delivery with our Billet Top Hat Bulkhead Fittings, designed for precision, durability, and seamless integration into custom or high-performance builds. Crafted from high-quality billet aluminum, these fittings ensure a reliable seal and a professional finish for...

***Due to a manufacturing defect these are no longer being allowed to be backordered*** The Precision Raceworks BMW HIGH PERFORMANCE REPLACEMENT IGNITION COIL is the same coil that comes with our famous BMW N54 & N55 HIGH PERFORMANCE IGNITION SYSTEMS featuring OEM resistance matched primary...

The Black Market Parts OE SPEC INTAKE MANIFOLD O-RING / GASKET KIT is made with Viton capable of withstanding all fuels (including e85) as well as oils. These o-rings are made to OE specifications and are a direct replacement for the seals found in...

The Precision Raceworks Replacement Air Filters are a perfect choice when looking to replace your dirty or damaged PR inlet filters.  -Filters Can be washed, cleaned and re used as needed. For more product details see the specifications tab

The Precision Raceworks Phenolic Spacer is made in the USA from premium fiber impregnated phenolic material. With a Rockwell Hardness of 100 and a conductivity rating of 2.03 it is the perfect material for insulating between heat generating parts such as the cylinder head and other...

This USB to Serial converter allows you to connect any RS-232 serial device such as SplitSecond AIC controller to a USB port on your Desktop or Laptop PC. Easy installation with Universal Plug and Play (drivers pre-loaded on most computers) Compatibility with Windows 10/7/Vista/...

The Precision Raceworks INJECTOR REMOVAL / INSTALLATION TOOL is the highest rated tool on the market not only for removal and installation of injectors but also for the installation and compression of the high pressure seals! For injector removal, simply thread the tool onto...

The Precision Raceworks N54/N55 TOP MOUNT PORT INJECTION LINE is compatible with most aftermarket manifolds with top mount port injection. These manifolds include but are not limited to the Black Market Parts manifold(s), BKC Manifold, BMS manifold, Sharp Custom, Doc Race and many more......

The Precision Raceworks N54/N55/S55 Port Injection fuel line is compatible with most plate style port injection kits on the market.  All connections are designed in house and machined from 6061 aluminum then anodized for 100% E85 compliance. All female quick connectors have 2 seals (a...

***NEW DESIGN*** The Precision Raceworks BMW Secondary Pump Activation Harness (Previously -Boost Referenced Pump Activation Harness) is the preferred method to control auxiliary fuel pumps by pump manufacturers and tuners alike. This kit is considered the most complete and highest quality kit on the...

The Precision Raceworks BMW N55/N54 RELOCATION REPLACEMENT SPARK PLUG WIRES are the same wires that come with our famous BMW N55 HIGH PERFORMANCE IGNITION KIT featuring low resistance high performance spark plug wires. These spark plug wires are 100% custom design from the ground up and...

Universal spark plug gap tool for your 12mm or 14mm spark plugs. A must for installing any spark plugs!

The Precision Raceworks BMW N55 REPLACEMENT COIL POWER WIRES are the same wires that come with our famous BMW N55 HIGH PERFORMANCE IGNITION KIT featuring low resistance oxygen free copper. These wires are 100% custom design from the ground up and Precision Raceworks is...

The Precision Raceworks N55/S55 Upgraded DI Injectors are designed for customers looking to push the limits without port injection (or in addition to port injection). Our high flow injectors were developed in a partnership with NHP, taking advantage of resources offered by both companies to produce the...