KYB Suspension Strut P/N:5510021

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$254.99

MPN: 5510021

Item Package Quantity: 1

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KYB Suspension Strut P/N:5510021

$254.99

Description

Firm up handling and control on your Subaru WRX STi with the KYB Gas-a-just Suspension Strut (MPN 5510021), a high-pressure monotube gas strut that drops in as the front-right OE monotube replacement for the 2015-2017 Subaru WRX STI. It's built to help restore the vehicle's designed control and handling.

The Gas-a-just uses two separate working chambers: an air-free hydraulic piston and valve area for responsiveness and control, plus a high-pressure nitrogen gas area with a floating piston that supports a comfortable ride during normal driving and adds performance on demand.

High-pressure monotube design: separates the gas and oil for fade-free operation and instant response.
Triple chrome-plated piston rod: ultra-smooth surface helps reduce seal wear, since fluid leaking can be a cause of shock failure.
Quick steering response: the higher gas pressure responds quickly to help improve steering response.
Supports electronic safety systems: helps keep Electronic Safety Systems performing as designed, since they depend on the suspension, brakes and tires working as the manufacturer intended.

Protect your new strut from dirt, debris and salt with a KYB Strut Boot (part number SB123), and to reduce the chance of noise and vibration KYB recommends installing new strut mounts (part number SM5664).

Interchange: 20310VA000

Manufacturer's Description

Product Specs

Buyer's Guide

Interchange Part Numbers

This part cross-references / interchanges with the following part numbers:

20310VA000

Frequently Asked Questions

What vehicle does this KYB strut fit?

It's a front-right OE monotube replacement strut for the 2015-2017 Subaru WRX STI. See the Buyer's Guide tab to confirm the exact fit for your vehicle.

What type of strut is the KYB 5510021?

It's a KYB Gas-a-just high-pressure monotube gas strut that separates the gas and oil for fade-free operation and instant response.

How does the Gas-a-just design work?

It has two chambers: an air-free hydraulic piston and valve area for control, and a high-pressure nitrogen gas area with a floating piston for a comfortable ride with performance on demand.

Should I replace both struts at once?

This listing is for one strut. Replacing struts as a matched pair on the same axle is a common best practice for balanced handling; consult the service procedure for your vehicle.

Are the strut boot and mounts included?

No. KYB recommends a Strut Boot (part number SB123) to guard against dirt, debris and salt, and new strut mounts (part number SM5664) to reduce the chance of noise and vibration.