The FHR Compatibility Guide: Sizing Your 6-Point FIA Harness Correctly
If you are currently prepping a saloon car for stage rallying, circuit racing, or track days, your safety system has to work as a unified ecosystem. Your seat, your Frontal Head Restraint (FHR/HANS device), and your harness must fit together flawlessly.
Yet, one of the most common tech questions we get at Race Rally Supplies is: “Should I buy a standard 3-inch harness, or do I need a dedicated FHR 2-inch shoulder strap?”
Getting this wrong doesn't just make you uncomfortable in the cockpit—it can severely compromise how your safety gear performs in an impact.
Below, we break down the critical differences between strap widths, look closely at the British-manufactured Turn One 6-Point FIA Harness, and explain how to ensure your cockpit setup is 100% race-legal without waiting weeks for stock to arrive.
The Core Debate: 3" vs. 2" Shoulder Straps for HANS Devices
Historically, all competition harnesses used thick, 3-inch (75mm) wide webbing across both the shoulders and lap belts. However, the widespread adoption of FHR/HANS collars changed the physics of cockpit safety.
The Problem with 3" Straps on an FHR
A standard 3-inch strap is physically wider than the carbon-fibre or composite shoulder surface of most modern HANS devices. When you cinch down a 3-inch belt over an FHR collar, the edges of the webbing tend to bunch up, spill over the sides, or rub uncomfortably against your neck. This slack can lead to dangerous belt migration during a heavy frontal collision.
The Turn One Tapered Solution
To fix this, modern premium harnesses utilize a tapered step-down design. The Turn One 6-Point Harness features heavy-duty 3-inch webbing across the lap belts to lock your pelvis firmly into the seat, but steps down cleanly to 2-inch (50mm) shoulder straps where the belt passes over your head restraint.
This allows the webbing to sit perfectly flat within the moulded guidelines of your FHR device, maximizing friction and ensuring instantaneous belt tension when you need it most.
Technical Spotlight: The Turn One 6-Point Saloon Harness
Manufactured right here in the UK by the restraint experts at TRS, the Turn One 6-Point Harness is the ultimate combination of professional-grade safety and unbeatable clubman value.
| Feature | Specification | Why It Matters |
| FIA Homologation | FIA 8853-2016 | Approved for all UK & international stage rally/circuit events |
| Extended Lifespan | 10 Years for MSUK | Valid for 5 years internationally, plus a 5-year extension for UK National events |
| Hardware | Black Steel Smooth-Glide Adjusters | Effortless, lightning-fast pull-down adjustments, even with thick race gloves |
| Quick Release | Compact Aluminium Turnbuckle | Narrow strap connection clips for quick, positive engagement |
| Practical Extras | Integrated Velcro Communication Strap | Cleanly anchors your intercom headset cable or drinks tube out of the way |
In Stock Now: No Backorders, No Delays
There is nothing worse than missing an entry deadline because your safety gear is stuck on a container ship. While other suppliers are facing massive lead times on safety gear, we have gone big on inventory.
The RRS Store Stock Guarantee: We have limitless, immediate stock of the Turn One 6-Point FIA Harness sitting on our shelves right now. Whether your build requires classic Black, striking Red, or vibrant Blue, your order will be picked, packed, and dispatched straight away.
The harness is supplied complete with 6x 7/16" eyebolts included in the box, and features removable rear clips so you can easily wrap the shoulder straps directly around your roll cage harness bar if your chassis layout demands it.
Buy Competition Quality at Real-World Prices
You shouldn't have to mortgage your house to sit securely in a racing seat. At Race Rally Supplies, our ethos is delivering competition-grade components that working drivers can actually afford, backed up by bulletproof stock availability.
The Turn One 6-Point Saloon Harness delivers exactly that: total FIA compliance, a dedicated FHR-optimized design, and UK-manufactured reliability, all at a price that leaves plenty of your budget left over for entry fees and tyres.
Drop by our online shop, select your colour, and split your purchase cleanly into interest-free payments using Klarna at checkout to get your cockpit sorted for the weekend.
👉 [Upgrade Your Cockpit: Shop Turn One 6-Point Harnesses Now]