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Description

AST Weld-in Roll Cage BMW Z3 Roadster V4

The AST Weld-in Roll Cage BMW Z3 Roadster V4 is a full roll cage for the BMW Z3 with 2-door Roadster bodywork. This Weld-in Z3 Roadster V4 carries over everything from the V3 and adds an extra diagonal bar and a harness bar.

The cage is designed and built by AST Roll Cages in Spain, for drivers who use a racing seat and a four- or six-point harness and need a fixed mounting point for it.

Key benefits

• The harness bar gives your shoulder straps a mounting point at the right height.
• An extra diagonal bar divides the main hoop into triangles and keeps it in shape in a rollover.
• Door bars and front bars from the lighter versions are retained.
• Eight welded mounting points that spread the load across the entire bodyshell.
• Major gain in rigidity on an open car without a load-bearing roof.
• E355 steel, 45 mm main hoop and 40 mm for the rest of the structure.
• Complete kit with gussets, reinforcement plates and mounting hardware.

Suitable for

BMW Z3, 2-door Roadster

• BMW Z3 Roadster, the open two-seater built from 1995 to 2002
• Type: weld-in roll cage, version V4
• Not suitable for the BMW Z3 Coupé. AST does not supply a cage for the closed coupé; this cage is designed around the open bodywork of the Roadster and will not fit the coupé.
• Drifting, track use and rallying

Technical specifications

• Manufacturer: AST Roll Cages
• Manufacturer part number: CMBN02923
• Rear anchorage: in the rear suspension area
• Rear structure layout: X design
• Roof compatibility: suitable for the original hardtop
• Type: full roll cage, weld-in (permanent)
• Main hoop: E355 steel, 45 mm diameter
• Secondary structure: E355 steel, 40 mm diameter
• Foot plates: 3 mm steel, custom-designed for each car
• Mounting: 8 welded mounting points on the bodyshell
• Weight: 71 kg (manufacturer’s figure)
• Finish: unpainted weld-in kit
• Included: weld-in kit, gussets, reinforcement plates, bolts, washers and nuts, documentation, fitting instructions and sticker set

Fitting and delivery

The cage is built to order; the standard delivery time is 15 to 35 working days. Before final welding, set up your seats and harnesses first, so that the harness bar ends up at the height that matches your seating position.

The version in which seat, harness and cage finally form a single unit.

Why choose this Weld-in Z3 Roadster V4 roll cage?

AST digitises the bodyshell with laser scanners and designs the cage in 3D, so that it fits your car exactly. In a short two-seater the space behind the seats is limited, and that is exactly where the diagonal and the harness bar have to fit without compromising your seating position. The cage is intended for track and competition use; always check the regulations of your own organiser before you order.

Frequently asked questions

Does this cage also fit a BMW Z3 Coupé?

No. The Weld-in Z3 Roadster V4 is made for the open Roadster, and AST has no cage in its range for the Z3 Coupé. So do not order this product for the closed version.

Can I attach my harnesses to the cage?

Yes, that is what the harness bar is for. Do follow your harness manufacturer’s fitting instructions regarding angles and anchorage points.

What is the delivery time?

The standard delivery time for this roll cage is 15 to 35 working days.

Delivery outside the European Union: different shipping costs may apply. Don’t worry: we will email you as soon as possible after your order and agree the shipping with you. You are not committed to anything without your consent.