Bilstein CA5 Series Shock Absorber - Polished Aluminum

 

Bilstein CA5 Series Shock Absorber is made for custom suspension builders who need a performance shock absorber that can be matched to the chassis rather than forced into a one-size setup. The polished aluminum threaded-body design gives the shock a clean, purpose-built appearance, while the available lengths and valve settings help support the ride and handling target of the build. It is a strong choice for customers working on street rod, motorsports, and specialty suspension applications where careful measurement matters.

The shock uses Bilstein monotube technology to help manage heat and maintain consistent damping as the suspension works. A 46mm piston gives the damper the control needed for custom applications, and the selected valve setting shapes how the vehicle responds to compression, rebound, and terrain changes. Customers can build around the specific motion control their project needs instead of settling for generic damping.

The CA5 uses 5/8 inch spherical rod end mounts and is supplied with a hard anodized spring seat, lock ring, and hat to support 2.5 inch ID spring use. That mounting style helps the shock integrate into custom chassis layouts while preserving the precision needed for a clean suspension cycle. Because compressed length, extended length, and travel vary by selected configuration, the installer should confirm measurements against the actual chassis before final setup.

The polished and finished body gives the shock a refined look that suits visible suspension areas on high-detail builds. More importantly, the construction supports repeatable movement through the suspension stroke, helping customers balance stance, ride quality, and body control. The shock is useful anywhere a custom vehicle needs compact packaging and reliable damping control.

Customers choosing a universal-style shock absorber usually have a specific target in mind: ride height, travel, wheel clearance, spring package, or the character of the vehicle over real roads. This shock gives those builders a Bilstein foundation with length and valving choices that can be matched to the project. It is best selected by measurement, mounting style, and the intended use of the vehicle.

Whether customers are upgrading for custom street rod fabrication, precise mounting, and suspension travel planning, Bilstein CA5 Series Shock Absorber delivers custom-fit damping control with a polished performance look. Now Available at LEER!

 

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Features & Specifications

Product Type: Suspension shock absorber

Brand: Bilstein

Series: CA5 Series

Application: Custom street rod suspension builds

Internal Design: Monotube

Piston Diameter: 46mm

Body Design: Threaded body

Finish: Polished aluminum

Mounting: 15.9mm heim upper and lower mounts

Spring Seat Included: Yes

Spring Hardware: Hard anodized spring seat, lock ring, and hat for 2.5 inch ID spring

Collapsed Length Range: 9.25 to 11.67 in.

Extended Length Range: 11.95 to 15.16 in.

Functionality:

• Supports custom coilover-style street rod suspension setups
• Uses spherical rod end mounts for precise custom mounting
• Provides a threaded body for spring package setup
• Includes spring hardware for 2.5 inch ID springs
• Offers multiple lengths and valve settings
• Helps builders tune stance, travel, and damper response together
• Uses a 46mm monotube piston for consistent control

 

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Available Options

The Bilstein CA5 Series Shock Absorber is available in multiple length and valving configurations:

• Short CA5 configurations -- Compact lengths support tight chassis layouts and limited available shock space.
• Mid-length CA5 configurations -- Intermediate choices help balance packaging, ride height, and suspension travel.
• Long CA5 configurations -- Longer extended lengths support builds that need more movement through the suspension cycle.
• Spherical rod end mount versions -- Heim-style mounts help customers build around precise custom mounting points.
• Valve setting choices -- Compression and rebound selections help tailor response to vehicle weight, spring rate, and use.

Choose a shorter configuration for compact packaging, or choose a longer configuration when travel and chassis layout call for added length.

 

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Why Choose

This product is ideal for customers who want a threaded Bilstein shock with spherical rod end mounting for precise custom suspension work.

• Supports high-detail custom chassis packaging
• Spherical rod end mounts help reduce unwanted compliance at the shock ends
• Threaded construction supports spring seat placement during setup
• Includes spring hardware for 2.5 inch ID spring applications where supplied
• Multiple lengths let builders match the shock to actual chassis measurements
• Valving options help tune ride and handling to the build's purpose
• Polished aluminum finish suits visible performance suspension layouts

 

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What's Included

• One CA5 Series shock absorber
• Hard anodized spring seat
• Lock ring
• Spring hat for 2.5 inch ID spring
• Spherical rod end mounts where supplied
• Selected length and valve configuration

Note: Confirm included components before installation.

 

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Installation Notes

• Measure compressed length, extended length, travel, and mount spacing before ordering
• Confirm spring diameter, spring length, spring rate, and chassis clearance before assembly
• Professional fabrication and suspension setup are recommended
• Cycle the suspension without the spring installed to verify clearance and travel limits

Buyer is responsible for use in accordance with applicable vehicle, road, off-road, towing, racing, and local laws.

 

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Warranty Information

Bilstein warranty coverage varies by product category and market. Customers should review the current Bilstein warranty documentation and retailer purchase record for eligibility, claim steps, and coverage duration before service or refreshment work begins.

Warranty coverage typically excludes improper installation, misuse, modifications, electrical issues, overloading, tampering, impact damage outside warranty terms, or non-compliant use; proof of purchase may be required for warranty claims.