The Z-Tech Sports Series 4A device is one of the newest fully SFI 38.1-certified devices on the market. The 4A is a super lightweight (925-gram) version of the entry-level Z-Tech Series 1A. The device is adjustable for different neck sizes, so selecting a specific size is not necessary. As with all head-and-neck devices, you'll need to add mounting hardware to your helmet (hardware for one helmet included). The device can be shared among multiple drivers as long as each driver's helmet has the necessary mounting hardware.
Here's all the official jibber-jabber from Z-Tech:
• Advanced Axis Adjustment allows you to adjust shoulder
width, arm angle and arm width. Fits
different body shapes and sizes and adjusts to different race seats.
Lightweight at approximately 925 grams.
Comfortable feels like you have nothing on.
Compound Frame Specialized Fiberglass Reinforced Nylon is used for the shoulder
frame offering leading structural characteristics. Arms made with a Modified Alloy material give
the device a dampening characteristic in a crash. The two materials work together offering
Steel Hardware screws and binary post built with high quality and strength to
provide long lasting strength.
Webbing Tether connects helmet to restraint and offers good side to side motion
• Spring Clip
Quick Connect allows easy connect/removal from helmet with one hand. Red thumb tabs provide easy grip.
• Belt Channel
with Wings accepts 2” or 3” belts.
Padding is easy to clean and/or replace for continued comfort.
Hardware needed is included to connect to helmet.
• SFI 38.1