Driven by safety – Simpson Hybrid User Manual
Page 5

DRIVEN BY SAFETY TEAMSIMPSON.COM 9
DRIVEN BY SAFETY
VISIT
TEAMSIMPSON.COM
TO SEE THE
FULL LINE OF HEAD AND NECK RESTRAINTS
OR 
CALL
800.654.7223
With the 2012 mandates in effect, the Simpson Hybrid Pro has endured stringent testing to 
prove that it is the safest option on the market. As part of Simpson’s SFI 38.1 certifi ed line of
Head and Neck Restraints, it was designed with the lowest profi le for maximum comfort and
maneuverability. Expertly engineered by Trevor Ashline with Safety Solutions technology,
it provides the quickest entry and exit from the race car and is NASCAR approved. From the fi rst hit to the 
last, the Hybrid Pro gives you every advantage. 
DRIVEN BY SAFETY
VISIT
TEAMSIMPSON.COM
TO SEE THE
FULL LINE OF HEAD AND NECK RESTRAINTS
OR 
CALL
800.654.7223
With the 2012 mandates in effect, the Simpson Hybrid Pro has endured stringent testing to 
prove that it is the safest option on the market. As part of Simpson’s SFI 38.1 certifi ed line of
Head and Neck Restraints, it was designed with the lowest profi le for maximum comfort and
maneuverability. Expertly engineered by Trevor Ashline with Safety Solutions technology,
it provides the quickest entry and exit from the race car and is NASCAR approved. From the fi rst hit to the 
last, the Hybrid Pro gives you every advantage. 
8 TEAMSIMPSON.COM TOLL FREE 800.654.7223
IN 
CAR ADJUS
TMENTS
IN 
CAR ADJUS
TMENTS
Get into car and buckle fully into the seat with seat belts. The head restraint 
should fi t comfortably under the shoulder harnesses. 
 
Seat the restraint against the shoulder belts by pulling up on the helmet 
tethers, before they are hooked to the helmet. The device will rest against the 
shoulder belts on the top, the seat in back and the driver’s shoulders.
The helmet tethers should be adjusted or changed to allow for no more than 
2.25” of straight forward head movement. Measure from a resting position 
(See Figure 13 dotted line)
moving your entire head forward (not your chin to
your chest). You should still be able to rotate your chin to your chest.
Adjust the rear helmet tether fi rst; they are the PRIMARY RESTRAINT The tethers are easily 
adjusted by unlacing the tether webbing through the 3-bar adjuster and lengthening or shortening 
the tethers through the 3-bar adjustments.
The forward helmet movement can be checked by measuring the amount of forward movement as 
the driver moves their head straight forward, with the chin up.
The tether adjustment is the measurement when the tethers fi rst have tension.
When the rear tether adjustments are complete make sure to lock down the tether by weaving 
the webbing back through the adjuster one last time. Use the rubber O-ring to hold the excess 
webbing in place.
IN CAR HELMET TETHER ADJUSTMENT
RESTRAINT TETHERS
ADJUSTABLE (SFI) TETHRS
1
2
3
4
5
6
7
Figure 13
no more than 2.25” of straight 
forward movement
Helmet Tethers MUST be adjusted for proper fi t before use.
Helmet tether adjustment needs to be made with the driver seated and buckled into the vehicle with full gear 
including, suit, helmet, and seatbelt harnesses. 
