Track tested
Validated under real load and duty cycle.
WPM In-House Development
Mclaren Lower Harness Brackets
From$825.00
Part of our barness bar kits for the 720S these lower bases are available seperately for Mclaren owners with the MSO roll bar or 620Rs wanting to use 6pt harnesses without the Mclaren quick-fit lap belt connection. These bases allow you to use a proper off the shelf 6pt harness of your choosing. Configurable to be used with Comfort, P1 and Senna seats.
Because of low clearance under the seats in the Mclarens we reccomend harnesses that use quick adjusters in the sub belts, like Scroth Flexi 2x2 or Lifeline Copse with optional adjusters, to make adjustments of the sub belts possible without removing the seat.
Includes
-2 x Under Seat Harness Base with matte black powdercoat as standard
-4 x Bolt to Clip-in harness adapters
-All Relavent Hardware
Locate a certified shop for installation near you.
Why We Built It This Way.
Tubing
Chromoly sections selected for stiffness and weight.
Fitment
Designed around OEM hard points and cabin geometry.
Design
CAD-driven packaging for install clarity.
In-house design
Fitment & Installation.
Clearance, mounting, and install sequence are designed around real chassis packaging—not a generic tube kit.
Learn moreProduct & Fitment FAQ.
Answers to common product and project questions.
How do I confirm fitment?
Share your chassis, year, and intended use. We’ll confirm mounting points and clearance before you order.
Is professional installation required?
We recommend installation by an experienced fabricator or certified shop familiar with motorsport safety equipment.
What finish options are available?
Standard finish is satin black powdercoat. Additional finishes may be available—contact the shop for lead time.
Lead time and shipping?
Lead times vary by configuration. Shipping estimates are available from the product page or by contacting WPM.