ST4 ST5 Helmet Bite Valve Hydration Pack - Blue Fuel plus a readily available ring

plus a readily available ring terminal for the harness shielding itself

Audi TT EMU Black plug-in ECU

and includes a 1/8 NPT port for a fuel pressure gauge or pressure sensor pick up

Does NOT fit FK8 Type R

They’re little trumpet-shaped air intakes for your engine

ST4 ST5 Helmet Bite Valve Hydration Pack - Blue Fuel plus a readily available ringThe Stilo drink system helmet kit includes a male coupling, tube, and rubber bite valve. The coupling assembly is designed to allow the driver a quick evacuation so that in case of emergency, by just a slight tug, the coupling slips off releasing the driver. All pipes are fitted to the helmet internally. The kits are designed for use with specific Stilo helmet series.