Tillett STBI Car Seat Bracket Set (2-Inch)

Maximise fitment flexibility and interior space with the Tillett STBI Car Seat Bracket Set (2-Inch), engineered for compact installations where space is limited. Featuring an inward-pointing design that tucks neatly under the seat, this premium bracket system is ideal for narrow cockpits and performance-focused builds. Manufactured in the UK from high-strength aluminium, the STBI brackets deliver precise adjustability, durable construction and a clean, low-profile mounting solution for a wide range of Tillett seats.

Key Features:

• Inward-pointing bracket design for minimal footprint
• Ideal for narrow or restricted cockpit installations
• 2° flat floor bracket design for optimal seating angle
• Manufactured from 5mm thick aluminium
• Textured black powder-coated finish for durability
• Multiple slot and hole configurations for full adjustability
• Allows seat tilt, height and leg position adjustment
• Compatible with Tillett TRI runners and other brands
• Can fit factory Mazda MX-5 Mk1 & Mk2 seat runners
• Lightweight design – approx. 1.11kg per pair
• Manufactured in the UK

Compact Design for Tight Interiors

The STBI bracket system is specifically designed to tuck beneath the seat, reducing its footprint and allowing installation in:

• Narrow cockpit environments
• Track-focused builds with limited space
• Vehicles requiring low-profile seat mounting

This makes it one of the most versatile solutions for tight interior layouts.

Wide Tillett Seat Compatibility

Compatible with a broad range of Tillett seats, including:

• B6S / B6SXL
• B6 / B6 XL (side mount versions)
• B7 / B7XL
• B8 / B9
• B10 / B10XL
• C1 / C1XL

Fully Adjustable Mounting System

The intelligent slot and hole layout allows for:

• Adjustable seat height
• Forward and rearward positioning
• Seat angle (tilt) adjustment
• Leg length positioning via additional lower slots

This ensures a tailored driving position for both comfort and control.

Strong & Lightweight Construction

Manufactured from 5mm thick aluminium with a durable black powder-coated finish, the STBI brackets offer:

• Excellent strength and rigidity
• Resistance to wear and corrosion
• Lightweight performance-focused design

Flexible Runner Compatibility

These brackets are designed to work with:

• Tillett TRI seat adjustment runners
• Other aftermarket runner systems
• Factory Mazda MX-5 Mk1 & Mk2 runners

Note: Seat runners are recommended for road use only.

Optional Reinforcement Upgrade

An optional aluminium pegged spacer kit can be added to reinforce the front mounting slots, providing additional strength in high-load situations.

What’s Included

• 1 x Pair of Tillett STBI Seat Brackets

Why Choose Tillett?

Tillett is a globally respected manufacturer of high-performance seating and mounting systems, known for precision engineering, lightweight construction and proven reliability.

Why Buy from R44 Performance?

R44 Performance supplies premium interior and performance components trusted by enthusiasts worldwide.

• Performance-focused product selection
• Trusted brands and proven components
• Fast UK & worldwide shipping
• Expert support

Upgrade your seating setup with the Tillett STBI Car Seat Bracket Set, delivering compact fitment, precise adjustability and durable construction for demanding applications.

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

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For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.