Sena Adult SF2 Motorcycle Bluetooth Communication System with

316 Stainless Steel SF2 Clip sf2 SF2 is a synthetic fiber and synthetic fluid road stabilization system that enhances compressive strength, CBR, shear strength and material adhesiveness It sf2 Designed for easy, in-line maintenance, the SF2 is a robust 3-piece bolted valve and is a great choice for any on-off service application

sf2 User manual to install and maintain SF2 fixed version