• SF Racing Air Struts for 2014-2015 BMW 4 Series Convertible RWD (F33)
  • SF Racing Air Struts for 2014-2015 BMW 4 Series Convertible RWD (F33)
  • SF Racing Air Struts for 2014-2015 BMW 4 Series Convertible RWD (F33)
  • SF Racing Air Struts for 2014-2015 BMW 4 Series Convertible RWD (F33)
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SF Racing

SF Racing Air Struts for 2014-2015 BMW 4 Series Convertible RWD (F33)

SF Racing Air Struts for 2014-2015 BMW 4 Series Convertible RWD (F33)

$1,795.00 USD
$1,900.00 USD $1,795.00 USD
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Listed for: 2014-2015 BMW 4 Series Convertible RWD (F33)RWDFitment notes & questions

SF Racing Air Struts for the 2014-2015 BMW 4 Series Convertible (F33) are the best coilovers available for street-driven cars. SF Sport Coilovers were designed to give a wide range of ride height adjustability without reducing the spring travel. Each corner of the car has 32 levels (or clicks) of damping adjustability. This combines both the rebound and compression into one adjustment knob. The coilovers also use rubber top mounts to help reduce the noise that typically comes with high performance aftermarket coilovers. SF Coilovers come standard with an anodized coating to protect against rust and corrosion caused by extreme use and harsh external elements.

Each SF Racing Air Strut kit is built using high-strength materials and features precision damping and height adjustability. With SF Racing, you're not just upgrading your suspension—you're unlocking the freedom to dial in your look and performance with confidence. Ideal for those chasing the ultimate stance setup without sacrificing comfort, SF Air Suspension is the trusted choice for form and function.

Features

  • Monotube Damper Design – Improves heat dissipation and reduces oil leakage.
  • 32-Level Adjustable Damping – Fine-tune rebound and compression for ideal ride quality.
  • Adjustable Ride Height – Lowers 1-2.5 inches below factory height without sacrificing suspension travel.
  • Independent Lower Mount Adjustment – Maintains shock and spring integrity while adjusting height.
  • T6-6061 Aluminum Construction – Lightweight, corrosion-resistant anodized top mounts, perches, and collars.
  • Electroplated Shock Body – Zinc-coated for rust protection.
  • Low-Friction, Pressure-Resistant Housing – Ensures smooth damping and longevity.
  • Pillowball or Reinforced Rubber Top Mounts – Reduces noise while improving handling.
  • SAE9254 Japanese Cold-Wound Springs – Durable and consistent performance.
  • Japanese NOK Seals & Italian IP Damping Oil – Prevents leaks and ensures high-performance damping.
  • Integrated Dust Boots & Bump Stops – Protects components from debris and wear.
  • 100% Bolt-On Replacement – No modifications required (unless otherwise stated in the Specifications section).

Specifications

Part Number SF-BM17-02-AS
Vehicle 2014-2015 BMW 4 Series Convertible
Drivetrain RWD
Chassis F33
Damper Model Air Struts
Damping Adjustability 1-Way: Rebound and Compression
Damper Size - Front 52mm diameter
Damper Size - Rear 46mm diameter
Spring Rates - Front 7.2 kg/mm
Spring Rates - Rear 11 kg/mm
Top Mounts - Front Standard: Aluminum with Rubber Bushings
Optional: Aluminum Camber Plates with Pillowball Bushings
Top Mounts - Rear Not Applicable
Suspension Design - Front True Coilover
Suspension Design - Rear Divorced (Separate shock and spring)
Notes -
View full details

Before you order: BMW 4 Series Convertible fitment and setup

For a BMW 4 Series Convertible that needs to be low for shows and practical for daily driving, air suspension is the most flexible option.

Fitment notes

  • Listed for: 2014-2015 BMW 4 Series Convertible RWD (F33).
  • Model years: 2014-2015. Check your car's year falls inside this range.
  • Chassis code F33: parts for other chassis codes of the same model usually won't fit.
  • Drivetrain: RWD. RWD and AWD versions of the same car often take different parts.
  • Factory adaptive dampers: if your car has electronic or adaptive suspension, check whether the listing covers it or needs a cancellation kit.
  • Specs, lead time and warranty come from SF Racing and can change. The details above this guide are the latest we have.

Not sure it fits? Message us your car's details and we'll double-check fitment with the supplier before you buy.

Ask about fitment

Plan the whole job

  • An alignment. Any change in ride height changes camber and toe. Set your final height first, then align.
  • Camber and toe adjustment. Bigger drops often need adjustable arms or camber plates to align properly. See alignment and camber kits.
  • Management. Air struts need a compressor, tank and controller unless the listing says they're included.
  • Wheel and tire clearance. Check clearance at full lock and full compression, especially with wider wheels.

More for your car: BMW Coilovers & Suspension · All Air Suspension

Questions about BMW 4 Series Convertible air suspension

Will this fit my BMW 4 Series Convertible?
It is listed for the 2014-2015 BMW 4 Series Convertible RWD (F33). Check your year, model, drivetrain and chassis code against the product title. If anything is different, contact us and we will confirm fitment with the supplier before you order.
Do I need an alignment after installing air suspension?
Yes. Changing ride height changes camber and toe. Set your final height, let the suspension settle, then get the car aligned.
How low can I go?
It depends on the adjustment range the brand lists, your wheels and tires, and how you use the car. Most cars that are driven hard work best with a modest drop that leaves enough suspension travel.
Where do specs and warranty details come from?
From SF Racing. We sell parts from several brands and suppliers, and each one sets its own specs, lead times and warranty terms. The product details above are the latest we have.
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