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:	14.820 in.
Description:	BLACK MAX SHOCK ABSORBER
Extended Length:	24.840 in.
Part Number:	skyB8558
Shock Stroke:	10.020 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
	sky134BHK-B	Skyjacker 4" BRONCO II W/HD BRACKETS (1x sky134, 1x sky134BH, 2x skyB8558, 2x skyB8554)
	sky174BK-B	Skyjacker 3.5-4" 78-79 BRONCO 4WD (1x skyR300, 1x sky174, 1x skyB8556, 1x skyB8555, 2x skyB8558)
	sky174BKS-B	Skyjacker 3.5-4" 78-79 BRO W/REAR SPR (1x sky174, 2x skyFR52S, 1x sky174BS, 1x skyB8556, 1x skyB8555, 2x skyB8558)
	sky174EBK-B	Skyjacker 4.5-5" 66-77 EARLY BRON 4WD (1x sky174, 1x sky174EB, 2x skyB8555, 2x skyB8558)
	sky174EBKS-B	Skyjacker 5" 66-77 BRONCO SYSTEM (1x sky174, 2x skyFR64S, 1x sky174EBS, 2x skyB8555, 2x skyB8558)
	sky176BK-B	Skyjacker 6" 78-79 BRONCO 4WD (1x sky176, 1x sky176B, 1x skyB8556, 1x skyB8559, 2x skyB8558)
	sky176BKS-B	Skyjacker 6" 78-79 BRO W/REAR SPRGS (1x sky176, 2x skyFR54S, 1x sky176BS, 1x skyB8556, 1x skyB8559, 2x skyB8558)
	sky182BKS-B	Skyjacker 2" 80-96 BRONCO SYSTEM (1x sky182, 2x skyFR51S, 1x sky182BS, 2x skyB8552, 2x skyB8558)
	sky182P2K-B	Skyjacker 1.5-2" 80-96F100,F150 2WD (1x skyR225, 1x sky182, 2x skyB8552, 2x skyB8558)
	sky184BK-B	Skyjacker 4" 80-96 BRONCO 4WD (1x sky184, 1x sky184B, 2x skyB8558, 2x skyB8554)
	sky184BKS-B	Skyjacker 4" 80-96 BRO 4WD W/REAR SPR (1x sky184, 2x skyFR52S, 1x sky184BS, 2x skyB8558, 2x skyB8554)
	sky184F2K-B	Skyjacker 4" 80-96 F250,350 2WD (1x sky184, 1x sky184F2, 2x skyB8558, 2x skyB8554)
	sky234BHKS-AB	Skyjacker 4"83-90 BRO2,CLII SYS W/ARM (1x sky134, 2x skyFR34S, 1x sky234BHS, 1x skyRA135, 2x skyB8558, 2x skyB8554)
	sky284BKS-AB	Skyjacker 4"80-96 BRO CLASSII SYS W/A (1x sky184, 2x skyFR52S, 1x sky284BS, 1x skyRA150, 2x skyB8558, 2x skyB8554)
	skyD5022K-B	Skyjacker 5"00-01DGE,1/2TON CLII KIT (1x skyD50, 1x skyD502, 1x skyD4552, 2x skyB8558, 2x skyB8593, 2x skyB8517)
	skyD5022KS-B	Skyjacker 5"00-01DGE,1/2T CLII SYSTEM (1x skyD50, 2x skyDR54S, 1x skyD502S, 1x skyD4552, 2x skyB8558, 2x skyB8593, 2x skyB8517)
	skyD502K-B	Skyjacker DGE RAM 5" 1500 CLASS2 KIT (1x skyD50, 1x skyD4550, 1x skyD502, 2x skyB8558, 2x skyB8593, 2x skyB8517)
	skyD502KS-B	Skyjacker DGE RAM 5" 1500 CLASS2 SYST (1x skyD50, 2x skyDR54S, 1x skyD4550, 1x skyD502S, 2x skyB8558, 2x skyB8593, 2x skyB8517)
	skyFE40MK-B	Skyjacker 4"KIT,00-03 EXCURSIONV8,V10 (2x skyF920S, 1x skyF9402M, 2x skyB8558, 2x skyB8534)
	skyFE40MKS-B	Skyjacker 4"SYS,00-03 EXCURSIONV8,V10 (2x skyF920S, 2x skyFR94S, 1x skyF9402MS, 2x skyB8558, 2x skyB8534)
	skyJ34K-B	Skyjacker 3.5-4" SOFTRIDE 55-75 CJ (2x skyJ34RS, 2x skyJ34FS, 1x skyJ34, 4x skyB8558)
	skyJ40K-B	Skyjacker 3.5-4" SOFTR 76-86 CJ,SCRAM (2x skyJ40RS, 2x skyJ40FS, 1x skyJ24, 2x skyB8523, 2x skyB8558)
	skyS20K-B	Skyjacker 2-2.5" 72-81 SCOUT II (2x skyS20RS, 2x skyS20FS, 1x skyS24, 2x skyB8555, 2x skyB8558)
	skyS40K-B	Skyjacker 2.5-4" 72-81 SCOUT II (2x skyS40RS, 2x skyS40FS, 1x skyS24, 2x skyB8555, 2x skyB8558)
	skyF740K-B	Skyjacker 67-77 Ford F-250 4 in. Suspension Lift Kit w/ Black MAX Shocks (1x skyR225, 2x skyF746S, 1x skyF7240, 2x skyB8558, 2x skyB8514)
	skyF740KS-B	Skyjacker 67-77 Ford F-250 4 in Suspension Lift System w/ Black MAX Shocks (2x skyFR74S, 2x skyF746S, 1x skyF740S, 2x skyB8558, 2x skyB8514)
	skyF720K-B	Skyjacker 67-77 Ford F-250 2in Suspension Lift Kit w/ Black MAX Shocks (1x skyR5005, 2x skyF724S, 1x skyF7240, 2x skyB8558, 2x skyB8514)
	skyS274WK-B

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

Features

Specifications

Product Attributes - Brand

Skyjacker Suspensions

Product Attributes - Manufacturer's Part Number

B8558

Product Attributes - Part Type

Shocks and Struts

Product Attributes - Product Line

Skyjacker Black MAX Shocks

Product Attributes - UPC

803696238760

Product Attributes - Ride Height

Stock/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.)

0.00-6.00 in.

Product Attributes - Extended Length (in.)

24.84

Product Attributes - Collapsed Length (in.)

14.82

Product Attributes - Internal Design

Twin-tube

Product Attributes - Adjustable Valving

No

Product Attributes - Gas Charged

No

Product Attributes - Upper Mount

Eyelet

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