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:	13.710 in.
Description:	BLACK MAX SHOCK ABSORBER
Extended Length:	22.580 in.
Part Number:	skyB8551
Shock Stroke:	8.870 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
	skyC125AK-B	Skyjacker 2.5" SR 73-87 GM 1/2 TON (2x skyC125S, 1x skyC125A, 2x skyB8553, 2x skyB8551)
	skyC125AKS-B	Skyjacker 2.5"SR 73-87 GM 1/2 W/RR SP (2x skyCR12S, 2x skyC125S, 1x skyC124AS, 2x skyB8553, 2x skyB8551)
	skyC125AKS8-B	Skyjacker 2.5" SYS 88-91 BLAZER/JIMMY (2x skyCR12S, 2x skyC125S, 1x skyC124AS8, 2x skyB8553, 2x skyB8551)
	skyC125AKSS-B	Skyjacker 2.5"SYS 73-87 1/2T SUB 52" (2x skyCR14S, 2x skyC125S, 1x skyC124AS, 2x skyB8553, 2x skyB8551)
	skyC125AKSS8-B	Skyjacker 2.5"SYS 88-91 1/2T SUB/52" (2x skyCR14S, 2x skyC125S, 1x skyC124AS8, 2x skyB8553, 2x skyB8551)
	skyC125BK-B	Skyjacker 2.5" SR 73-87 GM 3/4 TON (2x skyC125S, 1x skyC125B, 2x skyB8553, 2x skyB8551)
	skyC125BK8-B	Skyjacker 2.5" SR KIT,88-91 3/4 T SUB (2x skyC125S, 1x skyC125B8, 2x skyB8553, 2x skyB8551)
	skyC125BKS-B	Skyjacker 2-2.5"SR 73-87GM 3/4 W/RR S (2x skyCR12S, 2x skyC125S, 1x skyC124BS, 2x skyB8553, 2x skyB8551)
	skyC125CK-B	Skyjacker 2.5" SR 77-87 GM 1 TON (2x skyC125S, 1x skyC125C, 2x skyB8573, 2x skyB8551)
	skyC140AK-B	Skyjacker 4" SOFTR 73-87 GM 1/2 TON (2x skyC140S, 1x skyC140A, 2x skyB8553, 2x skyB8551)
	skyC140AK8-B	Skyjacker 4"SR KIT,88-91 BLA,1/2T SUB (2x skyC125S, 1x skyC140A8, 2x skyB8553, 2x skyB8551)
	skyC140AKS-B	Skyjacker 4"SR 73-87 GM 1/2 W/REAR SP (2x skyCR14S, 2x skyC140S, 1x skyC124AS, 2x skyB8553, 2x skyB8551)
	skyC140AKS8-B	Skyjacker 4"SR SYS 88-91 BLAZER/JIMMY (2x skyCR14S, 2x skyC140S, 1x skyC124AS8, 2x skyB8553, 2x skyB8551)
	skyC140AKSD-B	Skyjacker 4"73-87GM 1/2 TON W/56" SPR (2x skyCR24S, 2x skyC140S, 1x skyC124AS, 2x skyB8553, 2x skyB8551)
	skyC140AKSD8-B	Skyjacker 4" SYS 88-91 1/2T SUBURBAN (2x skyCR24S, 2x skyC140S, 1x skyC124AS8, 2x skyB8573, 2x skyB8551)
	skyC140AKSS-B	Skyjacker 4"SYS 73-87 1/2T SUB W/52" (2x skyC140S, 2x skyCR16S, 1x skyC124AS, 2x skyB8553, 2x skyB8551)
	skyC140AKSS8-B	Skyjacker 4"SYS 88091 1/2T SUB/52"SPR (2x skyC140S, 2x skyCR16S, 1x skyC124AS8, 2x skyB8553, 2x skyB8551)
	skyC140BK-B	Skyjacker 4"SOFTR 73-87 GM 3/4 TON (2x skyC140S, 1x skyC140B, 2x skyB8553, 2x skyB8551)
	skyC140BK8-B	Skyjacker 4" SOFTR KT,88-91 3/4 T SUB (2x skyC140S, 1x skyC140B8, 2x skyB8553, 2x skyB8551)
	skyC140BKS-B	Skyjacker 4"SR 73-87 GM 3/4 W/REAR SP (2x skyCR14S, 2x skyC140S, 1x skyC124BS, 2x skyB8553, 2x skyB8551)
	skyC140BKSD-B	Skyjacker 4"73-87GM 3/4T SYS W/56"SPG (2x skyCR24S, 2x skyC140S, 1x skyC124BS, 2x skyB8553, 2x skyB8551)
	skyC140CK-B	Skyjacker 4" SOFTR 77-87 GM 1 TON (2x skyC140S, 1x skyC140C, 2x skyB8573, 2x skyB8551)
	skyC140CKS-B	Skyjacker 4" 77-87 GM 1 TON SYSTEM (2x skyCR24S, 2x skyC140S, 1x skyC124CS, 2x skyB8573, 2x skyB8551)
	skyC225AJKS-B	Skyjacker 2.5" 69-72 SYS,BLAZER,JIMMY (2x skyC225S, 2x skyCR14S, 1x skyC224AS, 2x skyB8551, 2x skyB8541)
	skyC225AK-B	Skyjacker 2-2.5" SOFTRIDE 67-72 GM (2x skyC225S, 1x skyC225A, 2x skyB8551, 2x skyB8541)
	skyC225AKS-B	Skyjacker 2.5" SYSTEM 69-72 GM (2x skyC225S, 2x skyCR12S, 1x skyC224AS, 2x skyB8551, 2x skyB8541)
	skyC225AKSS-B	Skyjacker 2.5" SYSTEM 69-72 SUBURBAN (2x skyC225S, 2x skyCR14S, 1x skyC224AS, 2x skyB8551, 2x skyB8541)
	skyC240AJKS-B	Skyjacker 4" 68-72 SYSTEM,BLAZR,JIMMY (2x skyC240S, 2x skyCR16S, 1x skyC224AS, 2x skyB8551, 2x skyB8541)
	skyC240AK-B	Skyjacker 4" SOFTR 67-72 GM 1/2 (2x skyC240S, 1x skyC240A, 2x skyB8551, 2x skyB8541)
	skyC240AKS-B	Skyjacker 4" 69-72 GM SYSTEM (2x skyC240S, 2x skyCR14S, 1x skyC224AS, 2x skyB8551, 2x skyB8541)
	skyC240AKSD-B	Skyjacker 4" 69-72 GM 3/4 TON SYS-DIR (2x skyC240S, 2x skyCR24S, 1x skyC224AS, 2x skyB8551, 2x skyB8541)
	skyC240AKSS-B	Skyjacker 4" SYSTEM 69-72 SUBURBAN (2x skyC240S, 2x skyCR16S, 1x skyC224AS, 2x skyB8551, 2x skyB8541)

Data: v4.2 - Upd: 2026-10-16 20:09:21

Features

Specifications

Product Attributes - Brand

Skyjacker Suspensions

Product Attributes - Manufacturer's Part Number

B8551

Product Attributes - Part Type

Shocks and Struts

Product Attributes - Product Line

Skyjacker Black MAX Shocks

Product Attributes - UPC

803696238692

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.)

2.00-5.00 in.

Product Attributes - Extended Length (in.)

22.58

Product Attributes - Collapsed Length (in.)

13.71

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