Ultra Racing Middle Lower Brace - 4 Point • ML4-788

Ultra Racing 4-point middle lower chassis brace for Mazda MX-5 MK3 / MK3.5 / MK3.75 NC models listed in the compatibility table.

The Ultra Racing ML4-788 is a middle lower bar / middle member brace designed as an aftermarket chassis reinforcement upgrade for the third-generation Mazda MX-5 NC.

Mounted beneath the centre section of the vehicle, this four-point brace reinforces key lower chassis mounting areas around the transmission and exhaust tunnel. By linking these structural points, the brace is designed to reduce unwanted chassis flex and help the suspension and chassis respond more consistently under cornering and changing loads.

Product details:

• Brand: Ultra Racing
• Part number: ML4-788
• Product type: Middle Lower Bar / Middle Member Brace
• Position: Centre / middle lower chassis
• Brace specification: 4 Point
• Construction: Steel
• Configuration: One-piece structure
• Finish: Ultra Racing white
• Installation type: Direct bolt-on vehicle-specific brace
• Quantity required per vehicle: 1
• Quantity supplied: 1 middle lower brace

Common reasons for fitting:

• Reduce unwanted flex through the centre section of the chassis
• Reinforce the transmission and exhaust tunnel area
• Help improve suspension consistency under cornering loads
• Improve overall chassis response during enthusiastic road or track driving
• Complement front and rear Ultra Racing chassis reinforcement components

Fitment advice:

Ultra Racing application data identifies ML4-788 for the Mazda MX-5 MK3 / NC platform from 2006 to 2015, while MazSpec catalogue data lists the brace for all MK3 / MK3.5 / MK3.75 NC variants. Ultra Racing Japan separately confirms the NCEC 2.0 application. No Sport-specific exclusion is identified in the generation-wide application data. For imported, modified or previously repaired cars, matching the mounting arrangement on the vehicle before installation is recommended.

Other items to consider purchasing:

• Ultra Racing front strut brace
• Ultra Racing front lower / member brace
• Ultra Racing rear lower / member brace
• Ultra Racing rear lower side brace kit
• Ultra Racing anti-roll bars
• Replacement chassis fasteners where existing hardware shows wear or corrosion

Useful tools / consumables:

• Socket and ratchet set
• Torque wrench
• Suitable vehicle lift or axle stands
• Penetrating fluid where existing underbody fasteners are corroded

Difficulty guide: Intermediate DIY / workshop installation. Safe access beneath the centre of the vehicle is required.

Why Ultra Racing?

Ultra Racing specialises in aftermarket chassis and handling upgrades. Its middle lower braces reinforce structural areas through the centre of the vehicle, helping reduce unwanted chassis movement and allowing the suspension to operate more consistently under load.

What's in the box:

• 1 x Ultra Racing ML4-788 4-point middle lower chassis brace
• Additional mounting hardware where supplied with the product

Installation notes:

ML4-788 is a vehicle-specific direct-fit lower chassis brace. Installation requires safe access beneath the vehicle and may involve removal or repositioning of existing underbody bracing to access the mounting arrangement. Position the brace correctly and check clearance around the exhaust, transmission and surrounding underbody components before final tightening. Reassemble and tighten all mounting hardware to the appropriate vehicle or manufacturer specification.