Troy Lee Designs SE4 Polyacrylite MIPS Matrix MX Helmet (Closeout) YCRF_snow_boots That's what the 509 20

That's what the 509 20 Years of Evolution T-Shirt symbolizes

Silver or Black

To make sure your hands stay cool and dry during hot summer rides

25km/hr top speed

Combined with FRESHAIR lower and upper frame the KLIM VIPER Goggle's AIRCHAMBER is continuously restored with clean air

Troy Lee Designs SE4 Polyacrylite MIPS Matrix MX Helmet (Closeout) YCRF_snow_boots That's what the 509 20Weighing in at 1500 grams, the SE4 Polyacrylite Helmet comes with MIPS, incorporating brain rotational protection. This helmet comes with 16 intake ports to channel cool air around and over a rider's head. FEATURES MIPS brain protection system EPP (Expanded PolyPropylene) chin bar Three shell sizes to more accurately fit a variety of head sizes and rider ages Anatomical 3D contoured cheek pads with emergency release system for EMS responders Plastic