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Description

AST Half Roll Cage BMW E21 Coupé V2

The AST Half Roll Cage BMW E21 Coupé V2 is a half roll cage for the BMW 3 Series E21 with 2-door coupé bodywork. This Half Roll Cage E21 Coupé V2 is the higher specification of the two fixed variants for this chassis and likewise protects the rear compartment, with a more extensive structure than version V1.

The cage is designed and built by AST Roll Cages in Spain, for drivers who use their E21 more often and harder than the occasional track day and therefore want the heavier of the two half-cage versions.

Key benefits

• Heaviest half-cage version AST builds for the E21 Coupé, with more structure than version V1.
• Half roll cage focused on the rear compartment; the front part of the interior remains clear.
• Four bolting points on four foot plates made of 3 mm steel, welded to the bodyshell.
• Fixed mounting without connecting sleeves, so there is no play in the joints.
• E355 steel: main hoop 45 mm, rest of the structure 40 mm.
• Chassis-specific fit thanks to a laser scan of the E21 bodyshell and a 3D design.
• Complete package with reinforcement plates, mounting hardware, documentation, fitting instructions and a sticker set.

Suitable for

BMW 3 Series E21, 2-door Coupé

• BMW 3 Series E21 (1975 to 1983), 2-door Coupé
• Type: half roll cage, version V2, fixed mounting
• Drifting, track use and rallying

Technical specifications

• Manufacturer: AST Roll Cages
• Manufacturer part number: CMBN06854
• Sunroof: for roofs without a sunroof
• Headlining: for roofs without headlining
• Rear anchorage: at the wheel arch
• Rear structure layout: X design
• Type: half roll cage, fixed mounting, not 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: 4 bolting points on 4 foot plates welded to the bodyshell
• Coverage: rear compartment of the car only
• Weight: 210 kg (manufacturer’s figure)
• Finish: welded and unpainted
• Included: welded structure, reinforcement plates, bolts, washers, nuts, documentation, fitting instructions and sticker set (without connecting sleeves)

Fitting and delivery

The cage is built to order; the standard delivery time is 15 to 35 working days. Clear out the boot and the rear part of the interior before you start, as the four foot plates are welded to the bodyshell and the structure is then bolted onto them. AST digitises the bodyshell with laser scanners and designs the cage in 3D, so it fits your car exactly. This cage is intended for track and competition use; check the regulations of your own sporting organisation beforehand.

For anyone who wants the rear of their E21 as rigid as possible without a full roll cage, this is the top of the range.

Why choose this Half Roll Cage E21 Coupé V2?

The step from version V1 to this version is a step up in structure, not in complexity: you keep the same four bolting points and the same fixed mounting, but get a more heavily equipped cage in return. For a light classic like the E21, that means noticeably less movement in the rear body sections when you drive the car at the limit.

Frequently asked questions

What is the difference from version V1?

This Half Roll Cage E21 Coupé V2 is the higher of the two fixed specification levels that AST supplies for this chassis; the layout with four bolting points on welded foot plates is the same for both.

Is there a homologation number?

AST does not state a homologation number for this item. The cage is intended for track and competition use; check with your own sporting organisation which requirements apply in your class.

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.