Description
AST Bolt-in Roll Cage BMW E30 Touring V4
The AST Bolt-in Roll Cage BMW E30 Touring V4 is a full roll cage for the rear-wheel-drive BMW E30 3 Series with 5-door Touring bodywork. This Bolt-in E30 Touring V4 is the V3 extended with an extra diagonal brace and a harness bar: the highest specification level in this range.
The cage is designed and built by AST Roll Cages in Spain, for drivers of a rear-wheel-drive E30 Touring who use their car seriously in competition and refuse to compromise on rigidity or safety.
Key benefits
- Extra diagonal brace in the main hoop, which absorbs torsion and stiffens the structure as a whole.
- Harness bar as a fixed, correctly positioned anchorage point for your shoulder straps.
- Door bars for side protection, carried over from the V3.
- Front reinforcement bars running to the bulkhead for a rigid front end.
- Main hoop in E355 steel with a diameter of 45 mm, the rest of the structure 40 mm.
- Six bolting points on six 3 mm steel foot plates welded to the bodyshell.
- Complete package with connecting sleeves, reinforcement plates, bolts, washers, nuts, documentation, fitting instructions and a sticker set.
Suitable for
BMW E30 3 Series, 5-door Touring
- BMW E30 3 Series 5-door Touring
- Rear-wheel-drive E30 Touring only; the all-wheel-drive 325iX requires the separate AWD version
- Type: bolt-in roll cage, version V4
- Drifting, track use and rallying
Technical specifications
- Manufacturer: AST Roll Cages
- Manufacturer part number: CMBN05308
- 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 on welded foot plates
- 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
- 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, 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. Plan the fitting of your bucket seats and harnesses together with the cage, as the harness bar determines the height at which the shoulder straps run. AST digitises the bodyshell with laser scanners and designs the cage in 3D, so it fits your car exactly.
The V4 is the complete package for the E30 Touring: diagonal brace, harness bar and door bars in one full roll cage.
Why choose this Bolt-in E30 Touring V4 roll cage?
The Bolt-in E30 Touring V4 is intended for anyone who wants to get the most out of their car. The extra diagonal brace keeps the structure square, and the harness bar ensures your harnesses are anchored at the correct height, which makes all the difference in a crash. You also get a full roll cage that simply bolts onto welded foot plates, so there is no need to weld the entire cage into your car.
Frequently asked questions
What is the harness bar for?
The harness bar of the Bolt-in E30 Touring V4 is where your shoulder straps are attached. It sits at the correct height behind the bucket seat, so the straps run neither too steeply nor too flat.
Does this version fit the all-wheel-drive E30 325iX?
No. This V4 is made for the rear-wheel-drive BMW E30 Touring. The all-wheel-drive 325iX has its own AWD version, designed around its different floor and transmission tunnel.
Why is the cage supplied in sections?
The structure is welded and then split into sections via connecting sleeves, so that all the tubes fit through the door opening and are reassembled in place.
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.








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