Bilstein 24-228398 B6 Rear Perf. Shock for 13-20 Subaru BRZ/Scion FR-S/Toyota 86

Vehicle Fitment

• 2013-2016 Scion FR-S -- 2.0L FA20 H4
• 2013-2020 Subaru BRZ -- 2.0L FA20 H4
• 2017-2020 Toyota 86 -- 2.0L FA20 H4

Fitment Notes

• Rear axle ONLY -- sold individually (quantity of 2 required per vehicle)
• First generation (ZN6/ZC6) platform ONLY
• Does NOT fit 2022+ Subaru BRZ or Toyota GR86 -- use Bilstein 24-333047 for second generation
• Designed for use with OE factory springs -- no new springs required
• Also compatible with moderate aftermarket lowering springs
• Upper mount type: Stem -- Lower mount type: Eye (12.1mm)

Features

• B6 Performance series -- upgraded valving over OE for improved handling
• 46mm monotube gas pressure design
• Application-specific valve settings tuned for the FR-S/BRZ/86 platform
• Self-adjusting deflective disc valving adapts to changing road surfaces
• Monotube construction eliminates oil aeration and fade
• Larger piston surface area for increased damping force and heat dissipation
• Improved cornering stability, braking control, and lane-change response
• No modification required -- direct bolt-on replacement for OE rear shock
• Zinc-coated body for corrosion protection
• Rigorously tested to meet or exceed OE quality standards
• Engineered and manufactured in Germany

Specifications

• Part Number: 24-228398
• Brand: Bilstein
• Series: B6 Performance
• Type: Monotube Gas Pressure Shock Absorber
• Position: Rear
• Piston Diameter: 46mm
• Upper Mount: Stem
• Lower Mount: Eye (12.1mm)
• Country of Origin: Germany
• Warranty: Bilstein Limited Lifetime

Included Components

• Bilstein 24-228398 B6 Performance rear shock absorber (1)

Product Description

The Bilstein 24-228398 is a B6 Performance series rear shock absorber designed for the first-generation 2013-2016 Scion FR-S, 2013-2020 Subaru BRZ, and 2017-2020 Toyota 86. Engineered as a direct bolt-on upgrade over the factory rear damper, the B6 uses Bilstein's proven 46mm monotube gas pressure technology with application-specific valve settings tuned specifically for the FR-S/BRZ/86 platform. The monotube design keeps oil under constant gas pressure to prevent aeration and fade, while the larger piston surface area delivers increased damping force and superior heat dissipation during spirited driving. Self-adjusting deflective disc valving responds instantly to changing road surfaces, improving cornering grip, braking stability, and high-speed lane-change confidence without sacrificing everyday ride comfort. The B6 is designed to pair with the OE factory spring for a noticeable handling improvement with no additional modifications, and is also compatible with moderate aftermarket lowering springs for drivers seeking a sportier stance. Each damper is individually tested at Bilstein's facility in Germany to meet or exceed OE quality standards and features a zinc-coated body for long-term corrosion resistance. For a complete B6 upgrade, pair with Bilstein 35-228370 (front left strut) and 35-228387 (front right strut). This part number fits the first generation only -- for 2022 and newer Subaru BRZ and Toyota GR86, use Bilstein 24-333047. Backed by Bilstein's limited lifetime warranty.