BMW F83 M4 Cabrio MX Rear Left Right N/O/S Coil Spring Competition Package Set

Description

BMW F83 M4 Cabrio MX Rear Left Right N/O/S Coil Spring Competition Package Set is an original set of suspension components designed for the left and right sides of the rear axle. Thanks to their factory performance characteristics, they ensure consistent body handling, proper support for the rear of the vehicle, and stable car behavior in sport modes. This solution is dedicated to the Competition version, allowing you to maintain the original dynamics and steering precision intended by BMW engineers.

Specifications and technical data

• SKU: 7857313
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7857313
• Substitutable numbers: 7857313, 33537857313
• Location on the vehicle: Rear, Right, Left
• Category: Leaf & Coil Springs

Purpose and function in the BMW F83 M4 Cabrio suspension

The presented set belongs to the Leaf springs and coil springs category and is intended for installation on the rear axle, on the left and right sides. The springs are responsible for maintaining the correct vehicle ride height, controlling suspension deflection, and effectively transferring loads during acceleration, braking, and cornering. In the Competition version, their characteristics are tuned for more dynamic driving while maintaining comfort acceptable for daily use.

Benefits of using the original Competition set

Using the original rear suspension springs in the BMW F83 M4 Cabrio Competition allows you to maintain the factory performance parameters of the chassis. In practice, this means:

• correct rear axle geometry and predictable car reactions,
• consistent operation with factory shock absorbers and suspension electronics,
• even body support on both sides, without height differences,
• stability at high speeds and during sudden load changes.

For users of the Competition version, it is particularly important to maintain the original sport characteristics, which has a direct impact on grip, traction, and safety during dynamic driving.

Set characteristics and installation

The set includes springs designed for the rear axle, for the right and left sides, which facilitates the simultaneous replacement of both elements and restores even suspension operation. Installation should be performed by a workshop experienced with BMW M models, following the manufacturer’s procedures and performing a geometry check after the work is completed. Replacing a pair of springs in one service cycle minimizes the risk of asymmetry and allows you to fully utilize the potential of the chassis.

Application in service and upgrades

This set is particularly recommended in situations where there is material fatigue, lowering of one side of the vehicle, or mechanical damage to the spring. It works well both for standard repairs and for restoring a car to Competition specifications after previous suspension modifications. Thanks to the factory design, this is a beneficial solution for those who care about the originality and predictability of the car’s behavior, as well as for workshops specializing in servicing M models.

If you are planning a comprehensive repair or upgrade of the rear suspension area in your BMW and need other elements from the same group, such as additional springs, leaf springs, or related suspension components, check the available parts in the BMW leaf springs and coil springs category.

Why choose used originals for premium cars

In the current market situation, used OEM components for premium brands such as BMW represent a reasonable compromise between cost and quality. You receive a factory design, matched to a specific model and equipment version, without the need to reach for replacements with uncertain characteristics. If you want to better understand why this solution is gaining importance, it is worth reading the market trend analysis in the article Crisis in the new parts market? Why in 2026 used originals for premium cars (BMW, Mercedes, Porsche) are the hottest trend.