BMW 1 Series E87 LCI 120i N43 M Sport Front Right O/S Spring Leg Brake

BMW 1 Series E87 LCI 120i N43 M Sport Front Right O/S Spring Leg Brake is a complete suspension strut assembly designed for the front axle on the passenger side (for LHD vehicles). The set comes from the M Sport line, which means sport-tuned suspension and components matched to the dynamic characteristics of this model.

Specifications and technical data

• SKU: 6786020-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6771558
• Substitutable numbers: 6771558, 31316771558, 31316786020 34116776528 34116854998, 6786020 6776528 6854998, 34116772018 34116764643 34116772669, 6772018 6764643 6772669, 31216765157, 6765157
• Location on the vehicle: Front, Right
• Category: Suspension Component Replacement Kits

Purpose and compatibility

The presented component is dedicated to the BMW 1 Series E87 LCI 120i version with the M Sport package, for the front axle on the right side. Integrating the suspension strut with the brake system component allows for consistent operation of the suspension and brakes, which is particularly important in cars with a sportier character.

By using an original BMW solution, the correct suspension geometry, proper front ride height, and predictable behavior during braking and cornering are maintained.

M Sport suspension assembly construction

The suspension strut combines a spring, shock absorber, and steering knuckle mount with brake system components in one design. This solution ensures a rigid, stable connection between the wheel and the body, enabling precise vehicle handling.

The M Sport version is distinguished by its sport tuning, which translates into:

• more direct steering response,
• better body roll control,
• stable behavior at higher speeds.

Benefits of using a complete strut

Using a complete suspension assembly with the brake component on the front right side reduces service time and facilitates installation. The mechanic receives a coherent, factory-matched system, which reduces the risk of assembly errors and speeds up the replacement process.

For the user, this means:

• maintaining the factory handling characteristics typical of M Sport,
• consistent suspension and brake performance on one side of the axle,
• easier restoration of original driving properties after a collision or component wear.

Practical service application

This type of complete suspension strut is particularly useful for post-accident repairs, replacing damaged components after hitting a curb, or for comprehensive front suspension restoration in a BMW 1 Series E87 LCI 120i. Using an original solution allows for maintaining compliance with factory settings and facilitates subsequent geometry adjustment.

The item is classified in the Suspension replacement kits group, which emphasizes its functional character as a complete sub-assembly rather than a single part.

Expanding BMW suspension upgrades

If you are planning a comprehensive repair or upgrade of the front suspension area in your BMW and need other elements from the same group, such as additional struts, springs, or related mounting components, check out the available parts in the BMW suspension replacement kits category.

Used components and repair quality

Choosing a used, original M Sport suspension set is a reasonable compromise between cost and maintaining factory handling characteristics. In the premium automotive segment, proven second-hand components are increasingly used to maintain high repair quality within a controlled budget.

If you want to learn more about the possibilities of using used components in German brand cars, it is worth reading an article describing practical examples of tuning and repairs using second-hand parts: Audi on second-hand parts – tuning and repairs without loss of quality.