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BMW Z4 Half Cage Kit | DIY Weld-In Roll Cage for Track & Motorsport (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

BMW Z4 Half Cage Kit | DIY Weld-In Roll Cage for Track & Motorsport (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

🔧 BMW Z4 DIY Half Cage Kit – Motorsport-Ready Performance & Safety! Upgrade your BMW Z4 Coupe with our DIY Half Cage Kit, designed to reinforce chassis strength, enhance safety, and optimise track performance. Whether you’re a serious racer or a weekend track enthusiast, this precision-crafted roll cage delivers superior reinforcement without unnecessary weight. To install this cage, the rear bulkhead must be fully removed. This modification allows for a secure and seamless fit, ensuring optimal rigidity for track applications. 🔹 High-Performance Design & Construction Our BMW Z4 Half Cage Kit is engineered for motorsport performance, incorporating key reinforcements to improve both chassis stiffness and driver protection. ✔ X-Centre & X-Rear Bracing – Strengthens the chassis for enhanced track handling ✔ Harness Bar Hoop – Positioned behind the centre cross for optimal seat clearance ✔ B-Pillar Gussets & Mounts – Ensures a rigid and professional installation 💡 Designed for BMW Z4 Coupe owners looking for the ultimate track-ready roll cage solution! 🔹 Choose Your Material – T45 or CDS Steel We offer two steel options, allowing you to customise your half cage to match your performance needs. 📌 T45 Steel – Motorsport-Grade, Lightweight & Strong ✔ Aerospace-grade BS4-T45 steel with superior tensile strength ✔ Curved gussets for a sleek, high-performance look ✔ Lighter than CDS steel, making it the ideal choice for serious racers 📌 Standard CDS (E355+N) – Durable & Cost-Effective ✔ Cold Drawn Seamless (CDS) tubing for maximum durability ✔ Includes traditional straight taco gussets with precision-cut holes ✔ Reliable and affordable option for track day enthusiasts 💡 T45 is the best choice for weight savings & extreme durability, while CDS provides excellent reinforcement at a lower cost. 🔹 Precision Fit & DIY Installation Our BMW Z4 DIY Half Cage Kit is CNC-notched, pre-marked, and labeled, ensuring perfect alignment and hassle-free assembly. 🔧 Installation Overview: 1️⃣ Completely remove the rear bulkhead (required for proper fitment) 2️⃣ Position & tack weld the mounting plates in place 3️⃣ Assemble & align the X-bracing and harness bar 4️⃣ Ensure clearance and weld all structural points securely 5️⃣ Perform final checks to confirm proper fitment and reinforcement 📌 This is a weld-in kit designed for professional fabricators & experienced DIYers. Advanced welding and fabrication skills are required. 🔹 Why Choose JP Cages for Your BMW Z4 Roll Cage? When it comes to motorsport-grade roll cages, JP Cages leads the way in precision engineering and structural integrity. ✔ Designed for Track & Race Performance – Engineered for maximum safety ✔ Precision CNC Notching – Ensures seamless fitment & structural strength ✔ Customisable Steel Options – Available in T45 & CDS (E355+N) Tubing ✔ Trusted by Motorsport Enthusiasts – Built by JP Cages, the UK’s leading roll cage specialists ✔ Fast Worldwide Shipping – Secure delivery to track builders worldwide 💡 For complete safety compliance, our roll cages adhere to MSUK Blue Book Regulations for club-level motorsport. 🔹 Related Products & Internal Links ✔ Browse our full BMW Roll Cage Collection to find the perfect safety upgrade for your build. 🔹 Frequently Asked Questions (FAQs) ❓ Does this cage fit all BMW Z4 models? ✅ This kit is specifically designed for BMW Z4 Coupe models. For compatibility with convertibles, please contact us before ordering. ❓ What is the difference between T45 and CDS steel? ✅ T45 steel

GBP 630.00
1

MK7 GOLF HALF CAGE (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

MK7 GOLF HALF CAGE (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one. These are available powder coated in a range of colours! FULL FITTING KIT INCLUDED, MOUNTS ARE TO BE WELDED IN PLACE.   K BRACE SHOWN IS NOT INCLUDED

GBP 819.00
1

Renault Twingo Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

Renault Twingo Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one.     These are available powder coated in a range of colours!

GBP 819.00
1

Ford Puma Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

Ford Puma Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one.     These are available powder coated in a range of colours!

GBP 819.00
1

Toyota IQ Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

Toyota IQ Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one.   These are available powder coated in a range of colours!   Full fitting kit included – mounts are to be welded into place.

GBP 819.00
1

Mini R55 Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

Mini R55 Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one. This cage follows The Motorsport UK Blue Book Specifications and has an approximate weight of 24KG These are available powder coated in a range of colours! The cage is Direct fit at the rear with drill and bolt fitment through the floorpan – NO WELDING REQUIRED! Fitting available!  

GBP 819.00
1

MK5 Vauxhall Astra Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

MK5 Vauxhall Astra Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one.   These are available powder coated in a range of colours!   ​

GBP 819.00
1

Honda Civic FN2 Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

Honda Civic FN2 Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one.     These are available powder coated in a range of colours!

GBP 819.00
1

MK2 Renault Megane Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

MK2 Renault Megane Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one. These are available powder coated in a range of colours!

GBP 819.00
1

Honda Civic MB6 Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

Honda Civic MB6 Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one.     These are available powder coated in a range of colours!

GBP 819.00
1

Honda Civic EG6 Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

Honda Civic EG6 Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one. These are available powder coated in a range of colours!

GBP 819.00
1

MK1 Audi TT Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

MK1 Audi TT Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one.     These are available powder coated in a range of colours!

GBP 819.00
1

MK7 GOLF HALF CAGE (Colour: Unpainted, Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

MK7 GOLF HALF CAGE (Colour: Unpainted, Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one. These are available powder coated in a range of colours! FULL FITTING KIT INCLUDED, MOUNTS ARE TO BE WELDED IN PLACE.   K BRACE SHOWN IS NOT INCLUDED

GBP 756.00
1

MK2 FIAT PUNTO HALF CAGE (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

MK2 FIAT PUNTO HALF CAGE (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one.   FITS SUNROOF AND NON SUNROOF MODELS IN A STRIPPED INTERIOR   These are available powder coated in a range of colours!

GBP 819.00
1

Mini R56 Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

Mini R56 Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one. Unstripped and stripped fitment require mounts to be welded in place, and do require some trimming to the plastics. These are available powder coated in a range of colours!

GBP 819.00
1

VW Lupo Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

VW Lupo Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget, Perfect for casual track days at low cost. The cage requires no weld in mounts and is fixed via spreader plates bolted through the floor and arches, you could weld the mounts in place if you require a more substantial fixing. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one. This cage follows The Motorsport UK Blue Book Specifications and has an approximate weight of 23KG   These are available powder coated in a range of colours!  

GBP 819.00
1

MK5 Ford Fiesta Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

MK5 Ford Fiesta Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one. This cage follows The Motorsport UK Blue Book Specifications   These are available powder coated in a range of colours!  

GBP 819.00
1

MK3 Fiat Punto Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

MK3 Fiat Punto Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one.   Supplied with weld in track spec mounts and bolts.   These are available powder coated in a range of colours!

GBP 850.50
1

MK1 Ford Focus Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

MK1 Ford Focus Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one.   These are available powder coated in a range of colours!   Full fitting kit included – mounts are to be welded into place.

GBP 819.00
1

BMW E36 Compact half cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

BMW E36 Compact half cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one.   These are available powder coated in a range of colours!   Full fitting kit included – mounts are to be welded into place.

GBP 819.00
1

Subaru Impreza 2000-2007 Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

Subaru Impreza 2000-2007 Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one.     These are available powder coated in a range of colours!

GBP 819.00
1

MK5/MK6 VW Golf Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

MK5/MK6 VW Golf Half Cage (Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one.   These are available powder coated in a range of colours!

GBP 819.00
1

Renault Twingo Half Cage (Colour: Unpainted, Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

Renault Twingo Half Cage (Colour: Unpainted, Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one.     These are available powder coated in a range of colours!

GBP 756.00
1

Ford Puma Half Cage (Colour: Unpainted, Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

Ford Puma Half Cage (Colour: Unpainted, Material: LIGHTWEIGHT BS4-T45 - Unapproved for competition)

This is a track day spec cage perfect for track day use on a budget , Perfect for casual track days at low cost. This Design utilizes ‘X’ Bracing with harness bars and gusseting. This cage follows The Motorsport UK Blue Book Specifications, although you cannot compete with a half cage this cage follows all the rules to ensure it is fit for purpose, and can offer you significantly more protection in the event of a roll than without one.     These are available powder coated in a range of colours!

GBP 756.00
1