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Description

AST Bolt-in Roll Cage BMW E34 Sedan V4

The AST Bolt-in Roll Cage BMW E34 Sedan V4 is a full roll cage for the BMW 5 Series E34 with 4-door saloon bodywork. This Bolt-in E34 Sedan V4 has everything the V3 offers and adds an extra diagonal brace and a harness bar, making it the highest specification in the bolt-in range for this chassis.

The cage is designed and built by AST Roll Cages in Spain, for drivers who compete seriously and need a fixed, correctly positioned mounting point for their harnesses.

Key benefits

• Harness bar providing a fixed point behind the seat for the shoulder straps of your harness.
• Extra diagonal brace that spreads the forces in the main hoop more evenly across the structure.
• Door bars for side protection at driver level.
• Front bars to the bulkhead keep the front end of this large saloon rigid.
• E355 steel for the main hoop with a diameter of 45 mm, the rest in 40 mm.
• Six welded foot plates in 3 mm steel, custom-designed for each car.
• Complete package with connecting sleeves, reinforcement plates, bolts, washers and nuts, documentation, fitting instructions and a sticker set.

Suitable for

BMW 5 Series E34, 4-door saloon

• BMW E34 5 Series 4-door saloon
• Type: bolt-in roll cage, version V4
• Drifting, track use and rallying

Technical specifications

• Manufacturer: AST Roll Cages
• Manufacturer part number: CMBN05314
• 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 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. First the six foot plates are welded to the bodyshell, then the structure is bolted onto them. Decide on the final seat position before the harness bar is aligned, as the angle of the shoulder straps depends on it.

With door bars, an extra diagonal and a harness bar, this is the most complete bolt-in build that AST designs for the E34 saloon.

Why choose this Bolt-in E34 Saloon V4 roll cage?

A harness only works properly if the shoulder straps are anchored at the right height, and that calls for a proper harness bar rather than a floor mounting. This version combines that with the extra diagonal and the door bars, so the heavy E34 responds as a single unit instead of flexing around the B-pillar.

Frequently asked questions

What is the harness bar for?

The harness bar of the Bolt-in E34 Sedan V4 is where you attach the shoulder straps of your harness, at a height that suits the seat. This prevents the straps from running too steeply or too flat.

How does AST make sure the cage fits?

AST digitises the bodyshell with laser scanners and designs the cage in 3D, so that it fits your car exactly. On a larger body such as the E34 saloon, that is the difference between a cage that sits snugly against the roof and one you still have to force into 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.