Schroth Profi II 4 ASM Harness (Anti-SubMarining)

Schroth Profi II 4 ASM Harness (Anti-SubMarining)


Available in stock

Quick Overview

Part Number: SR-PROFI-II4ASM


The Profi II ASM is designed to be used as a four point system. For this reason it is perfect for use in Driver Education cars or any other application where stock seats are retained. A seat that was not originally desiged for use with a racing restraint should never be modified to accept an sub strap.

The Profi II ASM incorporates Schroth’s legendary ASM (Anti-SubMarining) technology that is the only thing like it on the market. ASM is an extra fold of material sewn into the right shoulder belt that elongates at a different rate than the outboard belt. This allows your upper torso to twist slightly. On the rebound phase, your torso is planted firmly back in the seat rather than allowed to slide under the lap belt.

The Profi II ASM shoulder is only available in 3″ width but is still suitable for use with a Forward Neck Restraint such as a HANS device

You can add a single or dual sub strap to make this belt into a 5 point or 6 point at any time. We have recently tested this harness with a HANS device, and the results were great. So you can in fact use this harness with a HANS device.

Another feature unique to the Profi Series 2″ lap belts is the “Flexi Belt”. The End Fittings and Cam Latches are wrapped into the harness, making it so that the lap belt can be changed from a Pull Up configuration to a Pull Down. This allows you to set the belt up just the way you want it for your specific situation. It also allows for Bolt In brackets to be wrapped in for the lap belts if needed. Snap in brackets come standard on the laps.

The Shoulders come ready to wrap around a roll bar. Snap in or Bolt in attachments can be bought separately. The Lap Belts come with Snap-in Attachments. Bolt-in brackets can be wrapped in if necessary.


  • FIA Approved
  • Many color options (please select)
  • Quick release / Turn buckle


  • Flat rate freight shipping additional at checkout.
  • Minnesota customers are subject to sales tax.
  • Customers outside the continental U.S. are subject to additional shipping charges.
  • Image(s) shown may not reflect actual product.

Additional Information


Black, Red, Blue, Silver


There are no reviews yet.

Be the first to review “Schroth Profi II 4 ASM Harness (Anti-SubMarining)”

Make Model Year
Nissan 350Z 2003
Nissan 350Z 2004
Nissan 350Z 2005
Nissan 350Z 2006
Nissan 350Z 2007
Nissan 350Z 2008
Nissan 370Z 2009
Nissan 370Z 2010
Nissan 370Z 2011
Nissan 370Z 2012
Nissan 370Z 2013
Nissan 370Z 2014
Nissan 370Z 2015
Nissan 370Z 2016
Nissan 370Z 2017
Nissan 370Z 2018
Nissan 370Z 2019
Nissan GT-R 2013
Nissan GT-R 2012
Nissan GT-R 2011
Nissan GT-R 2010
Nissan GT-R 2009
Nissan GT-R 2008
Nissan GT-R 2016
Nissan GT-R 2015
Nissan GT-R 2017
Nissan GT-R 2014
Nissan GT-R 2018
Infiniti G37 Coupe 2008
Infiniti G37 Coupe 2009
Infiniti G37 Coupe 2010
Infiniti G37 Coupe 2011
Infiniti G37 Coupe 2012
Infiniti G37 Coupe 2013
Infiniti G37 Sedan 2013
Infiniti G37 Sedan 2012
Infiniti G37 Sedan 2011
Infiniti G37 Sedan 2010
Infiniti G37 Sedan 2009
Infiniti G35 Sedan 2004
Infiniti G35 Sedan 2003
Infiniti G35 Sedan 2007
Infiniti G35 Sedan 2006
Infiniti G35 Sedan 2005
Infiniti G35 Sedan 2008
Infiniti G35 Coupe 2007
Infiniti G35 Coupe 2006
Infiniti G35 Coupe 2005
Infiniti G35 Coupe 2004
Infiniti G35 Coupe 2003
Infiniti Q60 Coupe 2014
Infiniti Q60 Coupe 2015
Infiniti Q60 Coupe 2016
Infiniti Q60 Coupe 2017
Infiniti Q60 Coupe 2018
Infiniti Q60 Coupe 2019
Infiniti Q60 Coupe 2020
Infiniti Q50 Sedan 2016
Infiniti Q50 Sedan 2015
Infiniti Q50 Sedan 2014
Infiniti Q50 Sedan 2017
Infiniti Q50 Sedan 2018
Infiniti Q50 Sedan 2019
Infiniti Q50 Sedan 2020
Make Model Year