BILTWELL Bonanza Helmet - Metallic Cherry Red - XL 1001-351-205 Replacement LED Board 75-inch diameter ensures the stock

75-inch diameter ensures the stock mufflers and most aftermarket mufflers will fit Includes oxygen sensor bungs

Drystar membrane within chassis gives 100% performance against wet penetration

5 O2 sensor bung (optionally cylinder specific bungs)

Easily and quickly connects to the existing lower cable section

BILTWELL Bonanza Helmet - Metallic Cherry Red - XL 1001-351-205 Replacement LED Board 75-inch diameter ensures the stockRugged, plated steel D ring neck strap with adjustment strap end retainer Expanded polystyrene inner shell Injection molded ABS outer shell with hand painted finish Hand sewn, removable, brushed Lycra liner with contrasting diamond stitched, quilted, open cell foam padding