What is the benefit of the inverted strut design?

The inverted strut design means the larger piston and damper body are at the bottom of the strut. This setup is stronger and better able to handle the significant side loads and braking forces encountered during performance driving and track use.

Do I need any special tools to install these coilovers?

Installation typically requires standard automotive tools for suspension work, including wrenches, sockets, and a torque wrench. Refer to the manufacturer's installation instructions for specific tool requirements and procedures, as specialized tools may be recommended for alignment adjustments.

Specifications

Brand: AST
Part #: RAC-B1407S
UPC: RAC-B1407S

AST 2019+ BMW 116d F40 FWD 5300 Series Coilovers w/ Springs

Name: AST 2019+ BMW 116d F40 FWD 5300 Series Coilovers w/ Springs
Brand: AST
SKU: ast-ast-2019-bmw-116d-f40-fwd-5300-series-coilovers-w-springs-t14-679811
Price: 8878.08 USD
Availability: BackOrder

$8878.08

On Backorder

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

Fits 2016-2022 BMW X1. AST 5300 Series 3-way adjustable coilovers with external reservoirs for fine-tuning track performance.

Key Features

Direct fit — verified for 2016-2022 BMW X1, 2016-2022 Mini Cooper Clubman, and 2017-2022 Mini Cooper Countryman.
3-way adjustable damping — independently adjust rebound, low-speed compression, and high-speed compression for fine-tuned performance.
External reservoirs — provide easier access for adjustments and help manage heat during hard use.
MONOTUBE coilover design — offers consistent and reliable damping control.
Inverted strut design — built to withstand significant side loads and braking forces.
Adjustable ride height — allows you to set your vehicle's stance and optimize handling.

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About this part

Product Details

Doing a track day or serious performance driving? The AST 5300 Series 3-Way Motorsport Coilovers are built for dedicated drivers looking to get the most out of their BMW X1. This kit, part number RAC-B1407S, lets you adjust rebound, low-speed compression, and high-speed compression separately using external reservoirs. You can dial in your suspension for specific track conditions and driving style.

These are MONOTUBE coilovers, which generally offer better damping control than twin-tube designs. The inverted strut design helps them handle the heavy side loads and braking forces common in performance driving. You can also adjust the spring rates and ride height to further customize the setup. The kit includes camber-adjustable front top mounts and solid rear top mounts where applicable, giving you more control over front-end geometry for improved grip.