HomeSuspension > Shocks and StrutsKYB KG9307 Suspension Strut - Rear
Part #: KG9307

KYB KG9307 Suspension Strut - Rear

Gas-a-just, Rear
21 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Gas-a-just, Rear
Fitment: BMW, 635CSi, 528e, 535i, 535is, 524td, and 533i
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Overview of KYB Gas-a-just Suspension Strut KG9307

The KYB Gas-a-just suspension strut KG9307 is engineered for precise fitment on select BMW models, including the 524td, 528e, 533i, 535i, 535is, and 635CSi. Designed to restore original handling and ride quality, this strut offers reliable performance tailored to your vehicle's suspension system.

  • Compressed length: 13.98 inches
  • Extended length: 21.5 inches
  • Stroke length: 7.52 inches
  • Lower mount type: E2 (14x62)
  • Upper mount type: S1
  • Bump stop (B-stop) included
  • Rebound stop (R-stop) included
  • No dust cover or internal rebound spring

Features and Specifications

The KG9307 suspension strut from KYB features a precise compressed length of 13.98 inches and an extended length of 21.5 inches, providing a stroke length of 7.52 inches. It is equipped with an E2 (14x62) lower mount and an S1 upper mount, ensuring compatibility with the suspension geometry of the specified BMW models. The inclusion of both bump stop and rebound stop components helps protect the strut from over-compression and over-extension, contributing to consistent ride control. This strut does not include a dust cover or internal rebound spring, which aligns with the original equipment design for these vehicles.

About the KYB Gas-a-just Product Line

The Gas-a-just line by KYB is designed to provide a direct replacement for factory-installed gas-charged struts. This product line focuses on restoring the original ride height and handling characteristics of your BMW 524td, 528e, 533i, 535i, 535is, or 635CSi. Gas-a-just struts utilize gas pressure technology to reduce foaming and maintain consistent damping performance over time, making them suitable for drivers seeking reliable suspension restoration without altering vehicle dynamics.

Common Applications and Problem Resolution

  • Restores proper ride height and suspension travel on BMW 5 and 6 Series models
  • Addresses excessive body roll and poor handling due to worn struts
  • Reduces noise and vibration caused by failing suspension components
  • Improves braking stability and cornering response
  • Prevents bottoming out and harsh impacts from road irregularities

Installation Notes and Tips

Installation of the KYB Gas-a-just KG9307 suspension strut requires proper tools and safety precautions. Ensure the vehicle is securely lifted and supported before removing the old strut assembly. Verify the lower mount type E2 (14x62) and upper mount type S1 match your vehicle’s specifications. Since this strut does not include a dust cover, inspect the existing dust boot for wear and replace if necessary. It is recommended to replace struts in pairs to maintain balanced suspension performance.

Quality Assurance and Warranty

KYB manufactures the Gas-a-just KG9307 suspension strut to meet or exceed OEM standards for durability and performance. While specific warranty details may vary, KYB typically offers coverage against defects in materials and workmanship. This strut is designed to provide consistent damping and reliable operation throughout its service life when installed according to manufacturer guidelines.

BrandKYB
Part NumberKG9307
PositionGas-a-just, Rear
B-stopY
Compressed Length13.98
Extended Length21.5
Lower Mount TypeE2(14X62)
R-stopY
Stroke Length7.52
Upper Mount TypeS1

This part fits 21 vehicles. Search below:

YearMakeModelPositionNotes
1989BMW635CSiRearRecommended OEM Replacement; (E24) (Exc. Bilstein Equipped); Gas-a-just
1988BMW528eRearRecommended OEM Replacement; (E28) (Exc.Bilstein Equipped); Gas-a-just
1988BMW535iRearRecommended OEM Replacement; Except Electronic Adjustable Suspension; (E28) (Exc. M5); (E28); To 12/1987; Gas-a-just
1988BMW535isRearRecommended OEM Replacement; Except Electronic Adjustable Suspension; (E28) (Exc. M5); (E28); To 12/1987; Gas-a-just
1988BMW635CSiRearRecommended OEM Replacement; (E24) (Exc. Bilstein Equipped); Gas-a-just
1987BMW528eRearRecommended OEM Replacement; (E28) (Exc.Bilstein Equipped); Gas-a-just
1987BMW535iRearRecommended OEM Replacement; Except Electronic Adjustable Suspension; (E28) (Exc. M5); (E28); Gas-a-just
1987BMW635CSiRearRecommended OEM Replacement; (E24) (Exc. Bilstein Equipped); Gas-a-just
1986BMW524tdRearRecommended OEM Replacement; (E28); Gas-a-just
1986BMW528eRearRecommended OEM Replacement; (E28) (Exc.Bilstein Equipped); Gas-a-just
1986BMW535iRearRecommended OEM Replacement; Except Electronic Adjustable Suspension; (E28) (Exc. M5); (E28); Gas-a-just
1986BMW635CSiRearRecommended OEM Replacement; (E24) (Exc. Bilstein Equipped); Gas-a-just
1985BMW524tdRearRecommended OEM Replacement; (E28); Gas-a-just
1985BMW528eRearRecommended OEM Replacement; (E28) (Exc.Bilstein Equipped); Gas-a-just
1985BMW535iRearRecommended OEM Replacement; Except Electronic Adjustable Suspension; (E28) (Exc. M5); (E28); Gas-a-just
1985BMW635CSiRearRecommended OEM Replacement; (E24) (Exc. Bilstein Equipped); Gas-a-just
1984BMW528eRearRecommended OEM Replacement; (E28) (Exc.Bilstein Equipped); Gas-a-just
1984BMW533iRearRecommended OEM Replacement; (E28); Gas-a-just
1983BMW528eRearRecommended OEM Replacement; (E28) (Exc.Bilstein Equipped); Gas-a-just
1983BMW533iRearRecommended OEM Replacement; (E28); Gas-a-just
1982BMW528eRearRecommended OEM Replacement; (E28) (Exc.Bilstein Equipped); Gas-a-just

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

G51330

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.