ST XA Coilovers BMW M340i G20 RWD (2020-2023) 16-Click Rebound Adjustment 182200CL

The G20 M340i is already a well-sorted chassis, but if you want to actually control the ride instead of just lowering the car, the ST XA is worth looking at. It's manufactured by KW, so you're getting proper German engineering at a more accessible price point. The 16-click rebound adjustment lets you dial between comfortable daily driving and tighter track behavior without tools or lifting the car. Ships preset to the KW-tested factory recommended setting, so it's a great starting point. You can adjust from there.

Fitment Information

• BMW M340i G20 Sedan RWD (2020, 2021, 2022, 2023)
• RWD only, does not fit M340i xDrive AWD

Fitment Note: RWD 2WD models only. The M340i xDrive AWD uses a completely different coilover kit (182200DK), which is available separately on our site. 

Specs & Features

• Lowering Range:
  • Front: 1.6-2.2"/ 40-60mm
  • Rear: 1.6-2.2"/ 40-60mm
• Spring Rates:
• Front: Progressive
• Rear: 686

• 18 Distinct clicks of Adjustable Rebound Damping
• Individual lowering within the tested adjustment range
• Front and rear axle thread adjustment (when possible)
• Galvanized coilover struts with additional coating for optimized corrosion protection
• Complete solution with adjustable spring perch, multi-coated spring system and dynamic elastomer bump stops with dust protection
• Powerful twin-tube dampers with high-quality components for maximum longevity
• Backed by ST suspension's 5 Year Unlimited Mileage Warranty
• Height adjustment is made via a continuously threaded strut housing and can be performed even with the kit already installed on the car.
• The kit ships preset to ST's factory recommended damper setting, tested on KW shock dynos before packaging.
• The 16-click rebound adjustment is accessed at the top of the chromed piston rod on each corner.
• Increasing rebound force stiffens handling and reduces body roll. Decreasing it softens the ride.
• A detailed setup manual is included to help you find the right setting for your driving style and reset to factory spec at any time.
• Front spring rate is progressive. Rear spring rate is 800 lb/in.
• Drop range is 1.6 to 2.2 inches at both axles.
• A professional wheel alignment is required after installation.
• Manufactured by KW Automotive in Germany. Backed by the ST Suspensions limited warranty. 

Pairs well with:

• H&R Wheel Spacers BMW M340i G20 (2019-2022) Hubcentric wheel spacers to push the wheels flush with the fenders after lowering. A very common pairing on the G20 since the coilovers close the vertical gap but the wheels can still sit slightly inboard without spacers.
• AWE Catback Exhaust BMW M340i G20 (2019-2025) Track or Touring Edition If you're doing the suspension first, the AWE exhaust is the next logical step on the M340i B58. Track or Touring sound levels available.

Frequently Asked Questions

• What is the difference between this and the xDrive kit?
  The 182200CL is for RWD M340i only. The xDrive AWD M340i needs the 182200DK, which we also carry on our site. The two are not interchangeable since AWD and RWD have different rear suspension configurations. Make sure you know your drivetrain before ordering.
• What does the 16-click rebound adjustment actually do?
  Rebound controls how fast the suspension extends after being compressed, which directly affects how the car handles direction changes and body roll. More rebound force means tighter, more controlled handling with less body movement. Less rebound gives you a softer, more comfortable ride. The adjustment knob is at the top of the shock rod on each corner and takes seconds to change. The included manual gives you a starting point for street and sport settings.
• Can I adjust the ride height with the kit already on the car?
  Yes. The continuously threaded strut housing lets you adjust height without removing the coilovers. You turn the spring perch up or down to set your preferred height. This is more convenient than kits that require removal for height changes.
• Who actually makes these?
  ST Suspensions is a brand under KW Automotive, which is one of the most respected suspension manufacturers in the world. The ST XA uses KW damping technology and is manufactured at KW's facility in Germany. You're getting a KW-engineered product at a more accessible price than the full KW lineup.

Product Description

For drivers wanting more than just ride height adjustment we offer the ST XA coilover. Developed by KW Automotive the ST XA allows individual adjustment of the damping to suit just about all your driving needs!

ST XA coilovers feature KW damping technology which allows the suspension to be made either stiffer or softer depending on the driving conditions. This damping adjustment is made on the upper end of the chromed piston rod allowing the setup to be changed almost instantly. If the rebound force is increased, the car will drive with more track stability and reduced bodyroll. If the rebound force is decreased, the car will feel more comfortable on the move. Any vehicle fitted with ST XA coilovers will behave much more agile and sporty compared to stock.

With all ST coilovers the lowering adjustment is made via a continuously threaded strut housing on the galvanized strut. This even allows the lowering to be made even when the kit is installed by turning the spring perch higher or lower! NOTE: The lowering of each vehicle differs greatly with ST XA coilovers due to the types of suspension construction.

The high-quality ST XA coilover is based on the twin-tube damping principle of low friction combined with pressure-resistant damper housings. Manufactured directly at KW, a monoblock guide and multi-lip sealing package reduces the friction of the damper as well as protecting it against corrosion and dirt. Each galvanized strut is sealed multiple times to ensure maximum longevity.