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Description

AST Bolt-in Roll Cage BMW E30 Coupé V4

The AST Bolt-in Roll Cage BMW E30 Coupé V4 is a full roll cage for the BMW E30 3 Series with 2-door coupé bodywork. This Bolt-in E30 Coupé V4 includes everything from the V3 and adds an extra diagonal brace and a harness bar, making it the most comprehensive level in this bolt-in range. Important: this cage is made for the rear-wheel-drive E30 and not for the all-wheel-drive 325iX.

The cage is designed and built by AST Roll Cages in Spain, for drivers who take their competition seriously and want to anchor their harness to the cage in accordance with the regulations.

Key benefits

• Harness bar to which you can attach the shoulder straps at the right height.
• Extra diagonal brace that supports the main hoop against deformation in a rollover.
• Door bars and front bars, carried over from the V3.
• Six bolting points on six foot plates welded to the bodyshell.
• 45 mm main hoop in E355 steel, the rest of the structure in 40 mm.
• Highest rigidity of the four versions in this range.
• FIA Appendix J as the design basis, with homologation numbers for this model.

Suitable for

BMW 3 Series (E30), 2-door coupé, rear-wheel drive

• BMW 3 Series (E30) 2-door coupé with rear-wheel drive
• Not suitable for the all-wheel-drive E30 325iX; choose the AWD version for that car
• Type: bolt-in roll cage, version V4
• Homologated to FIA Appendix J for the BMW 318is, 323i, 325i and M3
• Drifting, track use and rallying

Technical specifications

• Manufacturer: AST Roll Cages
• Manufacturer part number: CMBN05310
• Sunroof: for roofs without a sunroof
• Headlining: for roofs without headlining
• Rear anchorage: in the rear suspension area
• Rear structure layout: V design
• Type: full roll cage, bolt-in (removable)
• 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: 6 bolting points on 6 foot plates welded to the bodyshell
• FIA homologation: N-5401 / A-5401 / N-5138 / A-5138 / N-5292 / A-5292 / N-5327 / A-5327, valid for the BMW 318is, 323i, 325i and M3
• Weight: 210 kg (manufacturer’s figure)
• Finish: welded and unpainted, split into sections via connecting sleeves
• Included: welded structure, connecting sleeves, 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. The six foot plates are welded to the bodyshell and the cage is then bolted onto those plates. For this version, the interior behind the front seats must be almost completely stripped; the rear seat cannot stay in. AST digitises the bodyshell with laser scanners and designs the cage in 3D, so that it fits your car exactly.

The V4 is the most comprehensive bolt-in level for the rear-wheel-drive E30 Coupé: door bars, front bars, an extra diagonal and a dedicated harness bar.

Why choose this Bolt-in E30 Coupé V4 roll cage?

A harness is only as strong as the point it is attached to, and the harness bar of the V4 gives you exactly that fixed point at the right height behind the seat. The extra diagonal brace keeps the main hoop in shape if the car ends up on its roof. Anyone using the E30 Coupé as a serious competition car will end up with this version.

Frequently asked questions

Why a separate harness bar?

The Bolt-in E30 Coupé V4 has a crossbar behind the seats to which the shoulder straps are attached within the prescribed angle. Attaching them to the original body mounting points rarely meets that requirement in competition.

Does this cage also fit an E30 325iX with all-wheel drive?

No. This version is intended exclusively for the rear-wheel-drive E30 Coupé. A separate AWD version of this roll cage is available for the all-wheel-drive 325iX.

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.