Description

Black MAX twin tube shock absorbers have increased fluid capacity and utilize foam-cell technology. When the shock is working hard and gets hot, the foam-cell insert compresses to compensate for oil expansion which maintains consistent MAX performance throughout the operating temperature range of the shock. The foam-cell design also eliminates air inside the shock which allows for mounting in any direction. Arc-welded end mounts and select specific valving give this shock absorber MAX value.

Product Overview

Black MAX twin tube shock absorbers have increased fluid capacity and utilize foam-cell technology. When the shock is working hard and gets hot, the foam-cell insert compresses to compensate for oil expansion which maintains consistent MAX performance throughout the operating temperature range of the shock. The foam-cell design also eliminates air inside the shock which allows for mounting in any direction. Arc-welded end mounts and select specific valving give this shock absorber MAX value.

Features and Benefits

• Advanced Foam-Cell Technology
• Vehicle Specific Multi-Stage Valving
• Increased Fluid Capacity for MAX Heat Dissipation
• 360 Degree Arc Welded End Mounts
• 180 Degree Directional Mounting
• Twin Tube Construction
• Chrome Plated Shaft
• Sintered Iron Piston
• Limited Lifetime Warranty

Product Details

Collapsed Length:	20.270 in.
Description:	BLACK MAX SHOCK ABSORBER
Extended Length:	34.000 in.
Part Number:	skyB8577
Shock Stroke:	13.730 in.
WARNING CA Proposition 65 Message:	California Residents- WARNING: Cancer and-or other Reproductive Harm. (For more information go to www.p65warnings.ca.gov)
WARNING CA Proposition 65:	Yes

Kit Options

This item is available as a full kit.
Select a kit option in the following table if you are looking for this item in a bundle form with all associated components.

Kit option/s:

Thumb	SKU	Kit Title
	skyFE60MK-B	Skyjacker 6"KIT,2000 EXCURSION V8,V10 (2x skyF940S, 1x skyF9602M, 2x skyB8577, 2x skyB8541)
	skyFE60MKS-B	Skyjacker 6"SYS,2000 EXCURSION V8,V10 (2x skyF940S, 2x skyFR96S, 1x skyF9602MS, 2x skyB8577, 2x skyB8541)
	skyFE65MK-B	Skyjacker 6"KIT,2000 EXCURSION/DIESEL (2x skyF945S, 1x skyF9602M, 2x skyB8577, 2x skyB8541)
	skyFE65MKS-B	Skyjacker 6"SYS,2000 EXCURSION/DIESEL (2x skyF945S, 2x skyFR96S, 1x skyF9602MS, 2x skyB8577, 2x skyB8541)
	skyFE80MKS-AB	Skyjacker 8"SYS,EXCURSION,V8-V10W/ARM (2x skyF960S, 2x skyFR98S, 1x skyF9802MS, 2x skyB8560, 2x skyB8577)
	skyFE85MKS-AB	Skyjacker 8"SYS,EXCURSION,DIESL W/ARM (2x skyFR98S, 2x skyF965S, 1x skyF9802MS, 2x skyB8560, 2x skyB8577)

Data: v4.2 - Upd: 2026-10-16 20:09:32

Features

Specifications

Product Attributes - Brand

Skyjacker Suspensions

Product Attributes - Manufacturer's Part Number

B8577

Product Attributes - Part Type

Shocks and Struts

Product Attributes - Product Line

Skyjacker Black MAX Shocks

Product Attributes - UPC

803696238890

Product Attributes - Ride Height

Lifted

Product Attributes - Ride Height Note

Additional ride height information may be available for your vehicle, please refer to the app tab.

Product Attributes - Lifted Amount Range (in.)

5.50-8.00 in.

Product Attributes - Extended Length (in.)

34.00

Product Attributes - Collapsed Length (in.)

20.27

Product Attributes - Internal Design

Twin-tube

Product Attributes - Adjustable Valving

No

Product Attributes - Gas Charged

No

Product Attributes - Upper Mount

T-bar

Product Attributes - Lower Mount

Eyelet

Product Attributes - Bushing Material

Polyurethane

Product Attributes - Bushing Color

Black

Product Attributes - Boot Included

Yes

Product Attributes - Boot Color

Black

Product Attributes - Remanufactured

No

Product Attributes - Quantity

Sold individually.

Compatibility