Suspension Secrets Adjustable Rear Drop Links / End Links - BMW F20 M135I / M140I

Suspension Secrets Adjustable Rear Drop Links / End Links – BMW F20 M135i / M140i

Restore rear anti-roll bar geometry and make suspension setup changes easier with Suspension Secrets Adjustable Rear Drop Links for the BMW F20 M135i and M140i.

When an F20 is lowered on springs or coilovers, the position of the rear anti-roll bar can change because the standard fixed-length drop links are no longer operating at the original ride height.

Suspension Secrets Adjustable Rear Drop Links allow the effective link length to be altered, helping return the anti-roll bar to a more suitable operating position and reduce unwanted preload.

They are also particularly useful for cars that have been corner weighted, where small differences in ride height can otherwise place uneven tension into the anti-roll bars.

Why Upgrade to Adjustable Rear Drop Links?

Adjustable drop links are a valuable supporting suspension upgrade for lowered and performance-focused cars.

Potential benefits include:

• Corrected anti-roll bar position
• Reduced unwanted anti-roll bar preload
• More consistent rear suspension behaviour
• Improved left-to-right handling balance
• Easier corner-weighting setup
• Quick adjustment from within the wheel arch
• Suitable for road and track applications

Key Features

• Designed for BMW F20 M135i and M140i
• Adjustable rear drop link design
• External adjuster nuts
• Adjustment accessible from the wheel arch
• Aircraft-grade aluminium bodies
• Corrosion-resistant stainless steel componentry
• Motorsport-spec Fluro bearings
• Designed and manufactured in the UK
• Suitable for lowered vehicles
• Ideal for corner-weighted cars

Correct Anti-Roll Bar Geometry After Lowering

Lowering the vehicle changes the relationship between the suspension and anti-roll bar.

With fixed factory drop links, the anti-roll bar can be pulled away from its ideal resting position once ride height is reduced.

Adjustable drop links allow the length of the connection to be altered to suit the new ride height.

This helps the anti-roll bar operate more naturally within the suspension system.

Reduce Anti-Roll Bar Preload

If the drop link length is not correct, the anti-roll bar can sit under tension even when the car is stationary on level ground.

This preload can influence how the suspension behaves from one side of the car to the other.

Correctly adjusted drop links can help reduce this unwanted tension and create a more neutral starting point for suspension setup.

Ideal for Lowering Springs & Coilovers

These adjustable rear links are particularly useful for F20 models fitted with:

• Lowering springs
• Height-adjustable spring kits
• Coilovers
• Track-focused suspension

The greater the change in ride height, the more worthwhile it becomes to consider anti-roll bar positioning.

Quick In-Situ Adjustment

A key feature of the Suspension Secrets design is the adjuster nuts incorporated into the drop link bodies.

This allows setup changes to be made from within the wheel arch rather than requiring the links to be fully removed.

That makes them particularly useful for:

• Trackside adjustment
• Workshop setup
• Ride-height changes
• Corner weighting

Ideal for Corner Weighting

Corner weighting often results in very small differences in ride height between individual corners of the vehicle.

These differences can cause the anti-roll bars to sit under uneven tension if fixed-length drop links are used.

Adjustable drop links allow the link lengths to be altered so the anti-roll bar can be neutralised at the final ride heights.

This helps prevent anti-roll bar preload from interfering with the corner-weighting process.

Improved Left-to-Right Consistency

Uneven anti-roll bar preload can make a car feel different when turning left compared with turning right.

Correctly adjusted links help create a more balanced suspension platform and allow the anti-roll bar to respond more consistently in both directions.

Aircraft-Grade Aluminium Construction

The main drop link bodies are manufactured from aircraft-grade aluminium.

This provides a combination of:

• High strength
• Low weight
• Durability
• Performance-focused construction

Suspension Secrets uses billet 6082 T6 aluminium across its suspension component range.

Stainless Steel Componentry

The rose joints, adjusters and locking nuts use corrosion-resistant stainless steel componentry.

This helps provide durability in an area of the vehicle exposed to:

• Water
• Road dirt
• Salt
• Heat cycles

Motorsport-Spec Fluro Bearings

Suspension Secrets uses motorsport-spec Fluro bearings within the drop links.

These are selected to provide precise articulation and long-term performance in demanding suspension applications.

Road & Track Applications

Adjustable rear drop links are suitable for both road and track-focused builds.

They are particularly useful for:

• Lowered road cars
• Fast-road builds
• Clubsport setups
• Trackday cars
• Corner-weighted vehicles

Works Well With Other Suspension Upgrades

Adjustable drop links are particularly effective alongside:

• Coilovers
• Lowering springs
• Uprated anti-roll bars
• Adjustable rear arms
• Performance geometry setups
• Corner weighting

They allow the anti-roll bar system to be configured around the rest of the suspension rather than leaving the original fixed-length links as a limitation.

Professional Setup Recommended

Although the links are designed for easy adjustment, their final length should be set correctly for the vehicle's ride height and suspension configuration.

For performance applications, setup by an experienced suspension or geometry specialist is recommended.

Vehicle Fitment

BMW 1 Series F20

Compatible models:

• BMW M135i F20
• BMW M140i F20

What's Included?

Each kit includes:

• 1 pair Suspension Secrets Adjustable Rear Drop Links / End Links

Explore More BMW F20 Suspension

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Suspension Secrets – Browse the wider Suspension Secrets chassis and geometry range.

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Suspension & Handling – Explore coilovers, springs, bushes and chassis upgrades.