The REV 2 LITE is the ultimate head and neck restraint. Weighing in at only 1.2 lbs. / 550 grams, the REV2 LITE carries the same level of protection and certifications as the NecksGen Original and REV devices. The REV2 LITE has all the same features as the REV, but adds a clever new adjustable tether system, rubber grip friction pads to help you feel locked in your seat better, higher belt guides to keep everything locked in place and for multiple impact situations. Quick release helmet hardware is included! All NecksGen HNR’s ship free! That’s right, free ground shipping on all head and neck restraints. Just select free shipping at checkout.
Slack Test:
Get buckled in your car as if you are ready to race and look straight ahead to the horizon. Have a helper lightly pull any slack from the tether all to one side. Pinch the tether to form a loop and measure the total length of the excess tether. This number should be 1.0-2.0 inches total (about a 1 inch pinch). This is the ideal amount of slack. If it is not 1-2 inches, contact NecksGen for an appropriate length tether for your situation. If you have a REV, tethers are available in one inch increments. If you have a REV2 Lite, simply unscrew the pin that holds the tether to the device and insert it into the appropriate slot for you. Be careful when inserting the pin that it aligns with the back hole in the slot before tightening the screw, and do not overtighten. Finger tight is adequate.
https://www.necksgen.com/dl-29640968/REV2%20Manual%202020.pdf