The Precision Raceworks S58/B58 Plug and Play install harness for the Motiv ReFlex+ is certified by Motiv and a must for anyone adding a ReFlex+ to their S58 or B58 vehicle!

With this harness, there is no cutting, crimping, or splicing of your factory harness, and is 100% reversible if you ever need to return your car to stock! Simply make the appropriate connections and you are done!

What makes the Precision Raceworks Harness different from others?

Simply put, the main harness included with the Motiv Reflex is made very well. The only real downside to the standard Motiv Reflex harness is the sub harness, which requires splicing into the factory wiring. So we made a replacement for the sub harness to make everything plug and play. This saves you a great deal of money when compared to other plug and play options on the market, which ditch the entire harness you are already paying for when you purchase your Reflex Plus controller.

Highlights of the Precision Raceworks X58 Harness:

Harness Certified by Motiv Motorsports
100% Plug and Play for easy install
Compatible with MHD & MHD+ | EcuTek | BM3
Assembled in a ISO 9001 Certified Facility
Made with automotive grade wiring
Installs in as little as 1 hour
Easily Removable, factory harness is not modified

What's included in the box:

Plug and play sub harness (compatible with ReFlex Plus standard harness)

Recommended Accessories Sold Separately:

Motiv ReFlex Plus Controller
Plug and Play Flex Fuel harness
Precision Raceworks Ethanol 360 fittings
Genuine Continental Flex Fuel Sensor
Motiv 0-10bar (150psi) Fuel Pressure Sensor
Precision Raceworks B58 or S58 Port Injection Kit
Motiv ReFlex Plus Replacement Main Harness (Included in standard universal Motiv ReFlex Plus kit)

Note: This Harness replaces only the signal and power sub harness portion of the Motiv Reflex. Standard universal Motiv ReFlex Plus harness required for use of this Plug and Play Harness.

BMW M140i

Precision Raceworks S58/B58 Plug and Play ReFlex Plus Install Harness

Precision Raceworks F-Series B58 (F3x/F2x) -6 AN Fuel Line (OE Fuel Filter)

Precision Raceworks F-Series (F3x/F2x) B58 High Performance Fuel Pump

Precision Raceworks B58 Port Injection Kit (Fxx, Gxx)

TMS Tensility Motorsports - B58 S58 Plug & Play TMS ReFlex™ Race Harness BMW™ (No Splicing)