Hundreds Of Products Ready Today. Dispatch/Collection Definitive Guide to Corbeau Bucket Seat M10 Bolt Fittings and Side Mounts.
When you’re upgrading to a fixed-back bucket seat for track use or fast-road driving, one of the most overlooked but crucial details is the bolt size compatibility between the seat, side mounts, sliding runners, and base frames. In the world of aftermarket motorsport seating, almost all brands follow a universal standard of M8 bolts. Whether you’re fitting a Sparco EVO seat, an OMP TRS-E, or a Mirco GT, you’ll usually find four M8 threaded inserts (two on each side of the seat) for side mounting. These are designed to match up with M8 bolt holes on your mounting brackets and hardware, making the whole ecosystem widely compatible and easy to mix and match across brands.
However, there’s one important exception to this standard: Corbeau Motorsport bucket seats. Unlike most other seat manufacturers, Corbeau uses larger M10 bolts for its fixed-back side-mounted FIA seats. This means that if you’re switching to a Corbeau seat or planning to, you’ll need to pay attention to your mounting equipment. Corbeau’s M10 mounting system is not compatible with the typical M8 brackets found in most seat setups, unless they’ve been modified. That said, Corbeau’s M10 system isn’t just different for the sake of it; it’s designed with safety and structural integrity in mind, especially for motorsport scenarios where higher load tolerances are critical. So, if you’re planning your next installation, knowing the bolt type and ensuring hardware compatibility is just as important as choosing the seat itself.
Why Corbeau Uses M10 Bolts on Their Bucket Seats
Corbeau’s decision to use M10 bolts for their side-mounted fixed-back motorsport seats isn’t arbitrary; it’s a deliberate design choice focused on safety and durability.
Here’s why they chose M10 bolts:
Increased Strength: The larger M10 bolt provides additional shear and tensile strength, ideal for the high loads experienced in competitive motorsport.
Motorsport Ready: Corbeau’s M10 bolt system exceeds minimum motorsport standards and is designed to withstand serious lateral and vertical forces.
Improved Longevity: The beefier hardware stands up to repeated installations, adjustments, and removals better than standard M8 setups.
It’s important to note that Corbeau’s reclining seats and non-motorsport base-mounted seats still use the standard M8 bolt pattern, so this M10 specification only applies to their FIA side-mounted bucket seats.
Corbeau Bucket Seats Need M10-Compatible Side Mounts
When upgrading to a Corbeau fixed-back bucket seat, one of the most important details you’ll need to consider is that these seats are not compatible with standard M8 side mounts used across most other brands. Instead, Corbeau FIA-approved bucket seats require M10 bolts to attach the seat to the side brackets, which means you’ll need side mounts specifically manufactured or modified to accept M10 hardware.
At GSM Performance, we’ve made this easy for our customers by offering dedicated M10-compatible steel side mounts, designed to work perfectly with Corbeau’s bolt setup. These heavy-duty mounts feature a wide range of adjustment slots and holes, so you can dial in your ideal seating angle and height. Built from strong, durable steel, they’re a perfect match for Corbeau’s robust seat construction, ensuring your installation is secure and motorsport-ready. These brackets are also versatile enough to work with sliding runners or fixed-base mounts, depending on your setup.
These M10 side mounts offer:
- Reinforced steel construction for added safety
- Multiple angle and height adjustment points
- Compatibility with Corbeau’s M10 side-mount bolt pattern
- Ideal for use with sliding runners or fixed mounting systems
- Black powder-coated finish for a clean and professional look
Whether you’re preparing for track days or building a dedicated race car, using the correct side mounts is key to both safety and comfort. If you’re using a Corbeau seat, don’t risk an insecure fit with generic M8 mounts—go for the right hardware from the start.
Can You Adapt Standard Side Mounts for Corbeau Seats?
Yes, you can, but it must be done carefully.
If you already have M8-compatible side mounts and want to pair them with a Corbeau FIA seat, you’ll need to enlarge the M8 bolt holes to M10 size. Here are a few important considerations:
- Drill with Precision: The hole needs to be enlarged cleanly and centrally to ensure proper alignment.
- Check the Material Thickness: Only attempt this on side mounts made from thick, durable steel or aluminium.
- Avoid Edge Weakening: Do not bore out holes that are too close to the side mount’s edge, as this can compromise strength and safety.
- Always Use the Correct M10 Hardware.
We always recommend using side mounts designed for M10 bolts where possible to avoid compromising the mount’s structure.
Link to Our M10-Compatible Side Mounts for Corbeau Seats
At GSM Performance, we stock a wide range of complete FIA-approved harnesses from top-tier motorsport brands. These are all tested, homologated, and safe when used as complete sets.
At GSM Performance, we stock M10-compatible side mounts designed specifically to fit Corbeau Motorsport seats. These mounts are robust, versatile, and offer a wide range of adjustments.
Key features of our Corbeau-compatible side mounts:
- M10 hole spacing on both sides for perfect alignment
- Multiple base mounting slots for frame/sliding runner compatibility
- Broad adjustability to fine-tune the tilt and rake of the seat
- Black powder-coated steel for long-term durability
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In-Store: Try Corbeau Motorsport Seats Yourself
We’re proud to have a wide selection of Corbeau FIA-approved bucket seats on display in our showroom, ready for testing and viewing in person. If you’re not sure which Corbeau seat suits your build, or whether the M10 mounting is right for you, you can visit us in-store to:
- Test seat fitment and comfort
- Explore different trim and material options
- Chat with our expert team for installation advice
Whether you’re building a dedicated race car or prepping your fast road car for weekend track days, our Corbeau display is a great place to start.
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Final Thoughts – Bolt Up With Confidence
Corbeau’s use of M10 side mounts may be unique in the world of aftermarket seats, but it’s a sign of their motorsport-first approach to safety and durability. As long as you’re aware of the difference and use the right mounts, the installation process is just as straightforward as any other seat brand.
Here’s a quick recap:
- Corbeau FIA side-mounted seats use M10 bolts
- Most other brands use M8 bolts
- Use purpose-built M10 side mounts for the cleanest install
- Standard side mounts can be adapted, but caution is advised
- Our showroom has Corbeau seats ready for you to view and test in-store
We’re always happy to assist with any technical fitting queries, so get in touch or come see us in-store. Your ideal seating setup starts with the right foundation—and the right bolts!