What is the main benefit of the monotube damper design?

The monotube design uses a large piston for precise control over rebound damping. It also prevents aeration and foaming, which results in more responsive valving and consistent performance.

Can I adjust the ride height with these coilovers?

Yes, these coilovers allow for ride height adjustment. You can also fine-tune the rebound damping through 12 distinct positions to achieve your desired road balance and driving experience.

What does it mean that the dampers are rebuildable?

If any issues or damage occur with the dampers, they can be sent to a certified AST service center for repair. This rebuildable design can help extend the lifespan of your suspension components.

Specifications

Brand: AST
Part #: ACU-B2101SD
UPC: astACU-B2101SD

AST 15-19 BMW 1 / 2 series F20/F21/F22 LCI 1-Way 5100 Street Series Coilovers

Name: AST 15-19 BMW 1 / 2 series F20/F21/F22 LCI 1-Way 5100 Street Series Coilovers
Brand: AST
SKU: ast-ast-15-19-bmw-1-2-series-f20-f21-f22-lci-1-way-5100-street-series-coilovers-t14-633620
Price: 4319.36 USD
Availability: BackOrder

$4319.36

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

AST 1-Way 5100 Street Series Coilovers for 15-19 BMW 1/2 Series F20/F21/F22 LCI. Offers adjustable rebound and ride height for improved grip and comfort.

Key Features

Fits 2015-2019 BMW 1 Series (F20/F21) and 2 Series (F22 LCI).
Monotube damper design with a large piston for precise rebound control.
1-way adjustable for both rebound damping and ride height.
Front dampers use a coilover design, while the rear maintains a divorced setup like OEM.
Includes vehicle-specific springs designed to work with OEM top mounts.
Offers 12 distinct rebound adjustment positions for tailored driving feel.

These coilovers are specifically designed for the 2015-2019 BMW 1 Series (F20/F21) and 2 Series (F22 LCI). Please verify fitment for your specific vehicle model and year.

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About this part

Product Details

If you're looking to get the best road balance for everyday driving in your 2015-2019 BMW 1 or 2 Series (F20/F21/F22 LCI), these AST 5100 Street Series coilovers are a solid option. They help maximize grip by giving you control over your car's rebound and ride height. This kit includes springs and is designed to work with your car's original top mounts, making installation more straightforward.

AST has designed these coilovers with a monotube setup for the front dampers, while maintaining a divorced setup for the rear, similar to the factory configuration. This approach contributes to a more comfortable ride that still achieves excellent road balance. The rear dampers feature vehicle-specific, fixed spring rates that are the result of extensive development and testing by AST. You can easily fine-tune the setup to your preferences by adjusting the rebound knob or altering the ride height. With 12 distinct rebound positions, each adjustment offers a noticeable change in feedback and the overall driving experience.

The monotube design of these dampers is a key benefit, featuring a large piston that allows for precise control over rebound damping. Because there's no aeration or foaming in monotube dampers, you get more responsive valving. These high-pressure AST dampers are built to increase performance when you need it most, across various driving conditions. A notable feature is that these dampers are rebuildable, meaning any issues can be addressed at a certified AST service center, extending the life of your suspension.