FX-4 Graphic Helmet Foot Rests with the "B91" silencer (P/N

with the "B91" silencer (P/N 4104)

Each king pin is 10mm in sizing

and is instead the factory KA 100 airbox racers are familiar with

and does away with cumbersome buckles or repetitive loosening and tightening

FX-4 Graphic Helmet Foot Rests with the "B91" silencer (P/NFX 4 helmet by Zamp Racing. The FX 4 is packed with features and is an excellent choice for racers on dirt bikes, ATVs, and more. Each FX 4 helmet is lightweight and aerodynamic, and features a removable liner for easy cleaning. In addition, features include: Lightweight composite fiberglass shell Adjustable exterior air vents on chin and scalp areas Easy cinch strap for quick on and off Each FX 4 helmet meets or exceeds ECE 22. 05 and DOT