RaceQuip Helmet Parts Kit with HANS/HNR 6mm Plastic Plugs - Black - 204121 4 Bar 04" thick brazed aluminum core

04" thick brazed aluminum core which provides efficient fluid temperature reduction

unused injectors for its performance applications

Two boost level settings and scramble boost setting

A Mishimoto racing thermostat is the ideal upgrade for improved cooling reliability and efficiency

RaceQuip Helmet Parts Kit with HANS/HNR 6mm Plastic Plugs - Black - 204121 4 Bar 04" thick brazed aluminum coreSince all Snell SA 2015 helmets now have 6mm threaded inserts to mount a HANS HNR device, RaceQuip offers this two pack of replacement 6mm threaded plastic insert plugs to fill the holes if you don't use a HANS HNR. Two of these black plugs come standard with all RaceQuip SA 2015 helmets but these should also fit any other brand helmet that features the 6mm threaded insert. If you do not run a HANS HNR device, it is best to keep the mounting holes