WPM McLaren 720S Spider Harness Bar Install Package
- No-Drill No-Cut Harness Bar System for McLaren 720S Spider
- Docol R8 High-Strength Swedish Motorsport Steel Construction
- Mounts to OEM 3-Point Belt Points and Factory Pass-Throughs
- Compatible with 4-Point 5-Point and 6-Point Racing Harnesses
- 100% Reversible – Returns Interior to Stock Condition
- Includes Harness Bar Support Bars Underseat Brackets and Hardware
720S Spider
Harness Bar Package
Complete Installation System · No Cutting · No Drilling
Spider Owners Deserve Track Safety
The Problem
The McLaren 720S Spider presents a unique challenge for track enthusiasts: the convertible chassis lacks the structural mounting points found in the coupe, making harness installation seemingly impossible without permanent modifications like cutting, drilling, or welding into your $300K supercar.
The Solution
This precision-engineered harness bar system integrates with your Spider's existing OEM 3-point belt mounts and factory pass-throughs. The result is a secure, chassis-integrated harness mounting solution that maintains full structural integrity while adding zero permanent modifications.
Engineered for the Spider Chassis
The only no-drill, no-cut harness mounting solution designed specifically for 720S Spider convertibles.
No Modifications
Zero cutting, drilling, or welding required. Mounts to existing OEM points.
Fully Reversible
Remove completely and return interior to stock condition for resale.
Track Proven
Designed for high-G loads during aggressive track driving and racing.
Docol R8 Steel
Swedish ultra-high-strength steel used in FIA roll cages and WRC structures.
What's In The Box
-
Harness Bar
Main mounting bar for harness shoulder straps — the core of the system
-
Support Bars
Structural bracing that connects to chassis integration points
-
Underseat Harness Brackets
Mounting points for lap belts and anti-submarine straps
-
Complete Hardware Kit
All fasteners, bolts, and mounting components included
Built with Docol R8 Steel
The harness bar and support structure are fabricated from Docol R8 — a Swedish ultra-high-strength steel alloy developed by SSAB specifically for demanding motorsport applications.
This material provides exceptional strength-to-weight ratio, ensuring your harness mounting points can handle the extreme loads generated during high-G track driving while adding minimal weight to your Spider.
Docol R8
Ultra-High-Strength Steel by SSAB Sweden
Universal Harness Fitment
Works with all major harness manufacturers and configurations
6-Point Harnesses
FIA 8853-2016 compliant
5-Point Harnesses
Standard track configuration
4-Point Harnesses
Including GT3/GT4 spec
💡 Compatible Brands
Schroth, Sabelt, OMP, Sparco, Lifeline, Simpson, G-Force, RaceQuip, and all other leading harness manufacturers. Contact Function Factory Performance for harness recommendations matched to your specific seat and driving position.
Compatible Vehicles
McLaren 720S Spider
2017-2024 · All Variants
McLaren 765LT Spider
2021-2024 · All Variants
Specifications
🔩 Product Details
- ConstructionDocol R8 Steel
- FinishPowder Coated Black
- Mounting MethodOEM 3-Point Belt Locations
- Modifications RequiredNone
- ReversibleYes · 100%
- Harness Types4pt / 5pt / 6pt
📋 Kit Contents
- Harness Bar1x
- Support Bars2x
- Underseat Brackets2x
- Hardware KitComplete
- InstructionsIncluded
- SKUWPM-720S-SPIDER-HARNESS
Track-Ready Your Spider
No Drill · No Cut · Fully Reversible · Docol R8 Construction
Related products
Price range: $4,029.78 through $4,163.00
Price range: $2,103.95 through $2,173.50
Price range: $5,276.57 through $5,451.00
FREQUENTLY ASKED QUESTIONS
If it's in stock and ready to roll, your order usually hits the road within 1–3 business days.
For made-to-order or specialty items (like carbon fiber parts or custom builds), the turnaround can take up to 8 weeks — perfection takes time.
Either way, we'll keep you updated so you know exactly when your parts are leaving the pit lane.
Absolutely! Once your order ships, you'll receive an email with a tracking link so you can follow its journey from our shop to your doorstep.
If your order ships via freight, you'll get a separate email with a direct link to the carrier's tracking page — easy and stress-free.
Things happen on the road — even to boxes. If your order arrives damaged, snap a few clear photos of the box and product and send them our way right away.
If your shipment is lost, just email or call us — we'll help track it down and guide you through the next steps to make it right.
Simple — spread the horsepower! Follow us on Instagram, YouTube, and Facebook, and most importantly, drop us a review on Google or Yelp to let others know about your experience.
Your feedback helps us grow, create more content, and keep bringing performance-driven parts to the community. 🏁
1ST CLASS SERVICE
805-267-9762or email Support@FFPerformance.co
Car parts can be a maze — good thing we brought the map. Our team's here to keep things smooth, simple, and maybe even a little fun.
📞 Click To Call Now
Reviews
There are no reviews yet