Alpinestars Race v3 Fire Resistant Racing Undershirt - FIA 8856-2018 / SFI 3.3 | Original Colorway Category_Stopwatches The 4-pin 712-style connector is

The 4-pin 712-style connector is also popular on many other analog AIM sensors

The natural Lenzing FR fibers help naturally regulate body temperature without sacrificing its permanent fire resistant properties

creating a cool and dry base layer underneath your racing suit

For example

Alpinestars Race v3 Fire Resistant Racing Undershirt - FIA 8856-2018 / SFI 3.3 | Original Colorway Category_Stopwatches The 4-pin 712-style connector isThe Alpinestars Race v3 Fire Resistant Racing Undershirt delivers professional grade protection with a lightweight, comfortable fit. Certified to FIA 8856 2018 and SFI 3. 3, it offers identical performance to current production Race v3 undershirts. This version features the original Alpinestars colorway, making it a smart value choice for drivers who want proven safety without compromise. Ideal for track days, club racing, and professional competition.