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029310ECSKT - ECS Performance Adjustable Coilover System - E9X (xDrive) - With Installation Kit

ECS Performance Adjustable Coilover System - E9X (xDrive) - With Installation Kit

This brand new BMW Coilover line from ECS Tuning was designed with daily drivers in mind! Their focus was to improve on the performance and look of the suspension, without forgoing any comfort. Like many of the top tier coilovers, these coilovers feel as smooth and comfortable as a stock setup, while giving you an aggressive look and vastly improved handling, all at a fraction of the price!

The ECS Tuning Performance Coilover System provides a sport-tuned, height, damping, and body adjustable suspension with substantial performance benefits using high-quality materials and coatings to replace your worn suspension, all while giving your vehicle that perfect ride height!

Spring Rates: Front is 8kg/mm, Rear is 12kg/mm

PERFORMANCE FEATURES

32 levels of rebound damping adjustment Adjustable damping, monotube shocks/struts paired with optimized progressive rate coil springs gives your vehicle road-sticking grip with reduced body roll for exceptional confidence in your vehicle's handling. With your vehicle's new, lower ride height the center of gravity is now moved lower, further improving handling performance Adjustable front bodies allow you to set the ride height while maintaining correct spring pre-load Adjustable front and rear bodies allow the shock to operate in the correct valving range, regardless of ride height PRODUCT DESIGN

Strut and shock bodies finished with a durable gloss black powder coat for good looks and great longevity Threaded portions are clear zinc-coated for optimum corrosion protection against rain and salt Coil springs are powder-coated Reflex Silver Metallic finish for durability Red anodized, billet aluminum lower spring seats with locking collars allow for quick, on-the-car, adjustability with the included spanner wrenches Integrated bump stops KIT CONTENTS

ECS Performance Adjustable Coilover System - E9X (RWD) Front Suspension Installation Hardware: Strut Mount Gasket - 31306772226 (2) Spindle Pinch Bolt - 33326760346 (2) Spindle Pinch Nut - 33326760668 (2) Strut Rod to Cowl External Torx-Head Bolt - 07146954965 (1) Strut Rod to Strut Tower External Torx-Head Bolt - 07146963730 (2) Sway Bar End Link Locking Nut - 33326768884 (2) Front Axle Nut - 33411133785 (2) Rear Suspension Installation Hardware: Lower Control Arm Nut - 33306760349 (4) Lower Shock Mount Bolt - 33526764406 (4) Lower Shock Mount - 33526768544 (2) Upper Shock Mount (Upper) - 33506771737 (2) Upper Shock Mount (Lower) - 33506771738 (2) Upper Shock Mount Sealing Grommet - 33506767010 (2) CLICK HERE FOR INSTALLATION INSTRUCTIONS

ECS

T#: 48815455 | Part#: 029310ECSKT

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

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Checking Vehicle Fitment...

SALE: $1246.37 (11% OFF)

WAS: $1399.99 on 03-19-2026

This product was last offered at the strikethrough price on
03-19-2026

Lifetime Replacement

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Est. Ship Date:

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Product Details

Spring Rates: Front is 8kg/mm, Rear is 12kg/mm

PERFORMANCE FEATURES

32 levels of rebound damping adjustment
Adjustable damping, monotube shocks/struts paired with optimized progressive rate coil springs gives your vehicle road-sticking grip with reduced body roll for exceptional confidence in your vehicle's handling. With your vehicle's new, lower ride height the center of gravity is now moved lower, further improving handling performance
Adjustable front bodies allow you to set the ride height while maintaining correct spring pre-load
Adjustable front and rear bodies allow the shock to operate in the correct valving range, regardless of ride height

PRODUCT DESIGN

Strut and shock bodies finished with a durable gloss black powder coat for good looks and great longevity
Threaded portions are clear zinc-coated for optimum corrosion protection against rain and salt
Coil springs are powder-coated Reflex Silver Metallic finish for durability
Red anodized, billet aluminum lower spring seats with locking collars allow for quick, on-the-car, adjustability with the included spanner wrenches
Integrated bump stops

KIT CONTENTS

ECS Performance Adjustable Coilover System - E9X (RWD)
Front Suspension Installation Hardware:
- Strut Mount Gasket - 31306772226 (2)
- Spindle Pinch Bolt - 33326760346 (2)
- Spindle Pinch Nut - 33326760668 (2)
- Strut Rod to Cowl External Torx-Head Bolt - 07146954965 (1)
- Strut Rod to Strut Tower External Torx-Head Bolt - 07146963730 (2)
- Sway Bar End Link Locking Nut - 33326768884 (2)
- Front Axle Nut - 33411133785 (2)
Rear Suspension Installation Hardware:
- Lower Control Arm Nut - 33306760349 (4)
- Lower Shock Mount Bolt - 33526764406 (4)
- Lower Shock Mount - 33526768544 (2)
- Upper Shock Mount (Upper) - 33506771737 (2)
- Upper Shock Mount (Lower) - 33506771738 (2)
- Upper Shock Mount Sealing Grommet - 33506767010 (2)

CLICK HERE FOR INSTALLATION INSTRUCTIONS

Prop 65 Warning

Kit Contents

Qty	Description	T#	Part#	Lifetime
1	Genuine BMW Asa-Bolt With Circlip - 07146954965 - E82,E89,E90,E92,E93	T#29280	07146954965	YES
2	Genuine BMW Torx Bolt - 07146963730 - E82,E90,E92,E93	T#29331	07146963730	YES
2	Genuine BMW Washer-Gasket - 31306772226 - E82,E90,E92,E93	T#19852	31306772226	YES
4	Genuine BMW Rear Axle Self-locking Collar Nut 33306760349	T#7945	33306760349	YES
2	Genuine BMW Hex Bolt With Washer - 33326760346	T#60309	33326760346	YES
2	Genuine BMW Hexagon Nut With Collar - 33326768884	T#60338	33326768884	YES
4	Genuine BMW Torx Screw With Collar - 33526764406	T#21824	33526764406	YES
2	Genuine BMW Rear Axle Self-locking Collar Nut 33326760668	T#13492	33326760668	YES
2	OEM Febi Locking Axle Nut - Most BMWs	T#12580	33411133785~TMS	YES
2	OEM Lemforder Rear Lower Shock Mount - E88 E82 E9X E84	T#376085	33526768544~LEM	YES
1	ECS Performance Adjustable Coilover System - E90 AWD	T#638468	029310ECS01~A	YES
2	Shock Mount Sealing Grommet - 33506767010	T#36676170	33506767010~BRP	YES
2	Rear Upper Shock Mount - Upper Section - 33506771737	T#36676169	33506771737~BRP	YES
2	Rear Upper Shock Mount - Lower Section - 33506771738	T#36676165	33506771738~BRP	YES

Product Q&A

Lifetime Replacement

This Product Is Covered By Our Lifetime Replacement Program

Products protected by our Lifetime Replacement Program are covered for as long as you own the product, no need to worry about an expiration date. Purchase your products and enjoy some worry-free motoring, knowing we've got you covered.

If you have any questions, would like to learn more or are ready to place a replacement claim, click here!

Fits These Cars

MAKE	MODEL	SUBMODEL	ENGINE	Special Fitment Notes
BMW	E90	325xi	N52 3.0L	Use vehicle selector to confirm fitment
BMW	E90	328xi	N52 3.0L	Use vehicle selector to confirm fitment
BMW	E90	330xi	N52 3.0L	Use vehicle selector to confirm fitment
BMW	E90	335xi	N54 3.0L	Use vehicle selector to confirm fitment
BMW	E90	335xi	N55 3.0L	Use vehicle selector to confirm fitment
BMW	E92	328xi	N52 3.0L	Use vehicle selector to confirm fitment
BMW	E92	335xi	N54 3.0L	Use vehicle selector to confirm fitment
BMW	E92	335xi	N55 3.0L	Use vehicle selector to confirm fitment

*The above product applications have been written by Turner Motorsport. All warranties, product application, fitment, and performance are the responsibility of Turner Motorsport. For additional information see the terms of use.