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Description

AST Weld-in Roll Cage BMW F30 Sedan V4

The AST Weld-in Roll Cage BMW F30 Saloon V4 is a full roll cage for the BMW 3 Series F30 with 4-door saloon bodywork. This Weld-in F30 Saloon V4 adds an extra diagonal brace and a harness bar to the door bars of the V3, and is welded to the bodyshell at eight points.

The cage is designed and built by AST Roll Cages in Spain, for drivers who use bucket seats and harnesses and want a permanent structure in their F30.

Key benefits

• Harness bar included: your shoulder straps get a fixed anchorage point at the correct height behind the seat.
• Diagonal brace: spreads the load in the main hoop and prevents it from deforming sideways.
• Eight welded mounting points: the cage becomes an inseparable part of the bodyshell.
• Door bars left and right: protection against side contact, in both doors.
• 71 kg (manufacturer’s figure): a fully equipped cage without the weight of a bolted construction.
• E355 steel: main hoop 45 mm, rest of the structure 40 mm.
• Complete weld-in kit: gussets, reinforcement plates, mounting hardware, documentation and a sticker set.

Suitable for

BMW 3 Series F30, 4-door saloon

• BMW 3 Series F30 saloon, built 2012 to 2019
• Type: full weld-in roll cage, version V4
• Drifting, track use and rallying

Technical specifications

• Manufacturer: AST Roll Cages
• Manufacturer part number: CMBN03046
• Sunroof: for roofs without a sunroof
• Headlining: for roofs without headlining
• Rear anchorage: at the wheel arch
• Rear structure layout: V design
• Type: full roll cage, weld-in (permanent)
• 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: 8 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. Settle the position of your bucket seats before the harness bar is welded in for good, because its position cannot be changed afterwards. AST digitises the bodyshell with laser scanners and designs the cage in 3D, so that it fits your car exactly.

A welded-in cage with a harness bar: everything fixed, everything made to measure, and still only 71 kg according to the manufacturer’s figure.

Why choose this Weld-in F30 Saloon V4 roll cage?

The V4 is the choice for an F30 that is being built up as a dedicated competition car. You get the harness bar you need with a serious harness set and the diagonal brace that keeps the main hoop in place, permanently joined to the bodyshell. The cage is intended for track and competition use; check the regulations of your own organiser before you enter.

Frequently asked questions

What does the V4 add compared with the V3?

In addition to the door bars of the V3, this Weld-in F30 Saloon V4 has an extra diagonal brace in the main hoop and a harness bar for the shoulder straps of your harness.

How can I be sure the kit will fit my car?

AST scans the bodyshell of the F30 saloon with laser scanners and designs the cage around it in 3D. The foot plates and gussets are custom-designed for each car, so your welder does not have to improvise.

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.