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Description

AST Multipoint Weld-in Roll Cage BMW G82 Coupé V3 NASCAR door

The AST Multipoint Weld-in Roll Cage BMW G82 Coupé V3 NASCAR Door Bars is a full roll cage for the BMW 4 Series G82 with 2-door coupé bodywork. This Multipoint G82 Coupé V3 NASCAR is welded to the bodyshell at ten points and, instead of the standard door bar, has several curved tubes in the door.

The cage is designed and built by AST Roll Cages in Spain, for drivers who want to combine the broader anchorage of a multipoint structure with a door that remains easy to get in and out of.

Key benefits

• Ten welded mounting points: the cage is anchored to the bodyshell at more points than a standard weld-in cage.
• NASCAR door bars: several curved tubes in the door area instead of a single straight door bar.
• More side protection: a larger part of the door area is filled.
• Easier access: because the tubes bow outwards, you have more room to get into the seat of a coupé.
• V3 layout: main hoop with backstays, front reinforcement bars to the bulkhead and door bars, here in NASCAR form.
• E355 steel: 45 mm for the main hoop and 40 mm for the rest of the structure.
• Custom-scanned: the G82 bodyshell has been digitised with laser scanners and the cage designed in 3D.

Suitable for

BMW 4 Series G82, 2-door coupé

• BMW 4 Series G82 Coupé, the current M4 coupé from 2021
• Type: full roll cage, version V3 with NASCAR door bars, multipoint weld-in and permanent
• Drifting, track use and rallying
• Please note: AST does not offer a convertible version of this cage for the G82
• Please note: the F82 is the predecessor and has its own cage, which is not interchangeable with this G82 version

Technical specifications

• Manufacturer: AST Roll Cages
• Manufacturer part number: CMBN05925
• 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, multipoint weld-in (permanent), with NASCAR door bars
• 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: 10 welded mounting points on the bodyshell
• Weight: 71 kg (manufacturer’s figure)
• Finish: unpainted weld-in kit
• Included: weld-in kit, gussets, 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 ten welded mounting points and the door tubes require a fully stripped interior and a modified door card. The G82 is a modern car with a lot of electronics and airbags, so plan the installation carefully and have the trim, wiring and covers that need to come out identified in advance. Always check the regulations of your own organiser.

Ten welded mounting points and curved door tubes, for protection without having to squeeze yourself into the car.

Why choose this Multipoint G82 Coupé V3 NASCAR roll cage?

This V3 is the entry point to the multipoint range with NASCAR door bars. You get the wider anchorage of ten welded mounting points without immediately taking on all the extra bars of the higher versions, which keeps weight and complexity down. AST digitises the bodyshell with laser scanners and designs the cage in 3D, so all the tubes fit snugly in the car.

Frequently asked questions

What do the NASCAR door bars offer?

On the Multipoint G82 Coupé V3 NASCAR, several curved tubes sit in the door instead of the standard door bar. This provides more side protection and more room to get in at the same time.

What does multipoint mean here?

The cage is welded to the bodyshell at ten points instead of the eight points of a standard weld-in version, so the forces are spread over more locations.

Does this cage also fit an F82 or an open-top version?

No. This cage is exclusively for the 2-door coupé of the G82. The F82 is the predecessor and has its own cage from AST, which is not interchangeable; AST does not offer a convertible version for the G82.

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.