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Description

AST Removable Roll Cage BMW E81 V3

The AST Removable Roll Cage BMW E81 V3 is a full roll cage for the BMW 1 Series E81 with three-door hatchback bodywork. This removable roll cage E81 V3 builds on the V2 and adds door bars, providing side protection that the lower versions lack.

The cage is designed and built by AST Roll Cages in Spain for drivers who take part in races or drift events where contact cannot be ruled out, but who still want to be able to return their E81 to its original condition afterwards.

Key benefits

• Door bars: the addition compared with the V2, for protection under side loads.
• Bars to the bulkhead: the front reinforcement bars from the V2 remain in place and tie the cage in at the front.
• Six bolting points: on six 3 mm steel foot plates welded to the bodyshell.
• Removable: the sections are separated by connecting sleeves, so the cage can come out again.
• E355 steel: main hoop with a diameter of 45 mm, the remaining tubes 40 mm.
• Designed precisely for the three-door: based on a laser scan of the E81 hatchback.
• Supplied unpainted: you choose the colour and the paintwork yourself.

Suitable for

BMW 1 Series E81, three-door hatchback

• BMW 1 Series E81 three-door hatchback, model years 2007 to 2011
• Type: full roll cage, version V3 with door bars, removable via connecting sleeves
• Drifting, track use and rallying
• For the three-door E81 only. AST designs separate cages for the E82 coupé and the E87 five-door; these are not interchangeable with this one.

Technical specifications

• Manufacturer: AST Roll Cages
• Manufacturer part number: CMBN00719
• Sunroof: for roofs without a sunroof
• Headlining: for roofs without headlining
• Rear anchorage: at the wheel arch
• Rear structure layout: X design
• Type: full roll cage, removable via connecting sleeves
• 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. The six foot plates are first welded to the bodyshell and only then is the cage bolted onto them, so expect welding work in the workshop. AST digitises the bodyshell with laser scanners and designs the cage in 3D so that it fits your car exactly.

The first version in this range with door bars: side protection in a cage that can also come out again via connecting sleeves.

Why choose this removable roll cage E81 V3?

As soon as you drive at a busy track day or a drift event, the side of a short hatchback is its most vulnerable point. Door bars alongside the full structure and the bars to the bulkhead cover that, while the connecting sleeves keep open the option of returning the car to standard. The cage is intended for track and competition use; always check the regulations of your own organiser before you enter.

Frequently asked questions

What does the V3 add compared with the V2?

The removable roll cage E81 V3 has the same full layout as the V2, including the reinforcement bars to the bulkhead, and adds door bars for side protection.

How does AST make sure the cage fits precisely?

AST digitises the bodyshell of the three-door E81 with laser scanners and designs the cage in 3D based on that scan. That is why the cage is not interchangeable with the version for the E82 coupé or the E87 five-door.

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.