Shock

Bilstein B6 4600 shock absorbers are designed as a direct fit upgrade to OE shock absorbers on stock height light trucks and SUV's. These shock absorbers feature a monotube design which provides consistent fade free performance. B6 4600 shock absorbers utilize a unique, velocity sensitive, digressive piston which reacts to changing road conditions. All B6 4600 shock absorbers are tuned for each specific application to ensure optimal performance is achieved. B6 4600 shock absorbers offer a significant improvement in ride quality, handling, and comfort.

Additional Information

46mm Monotube Shock Absorber

Application Summary

Chevrolet Blazer 1974-1973, Blazer 1991-1987, C10 1986-1975, C10 Pickup 1974-1973, C10 Suburban 1986-1973, C20 1986-1975, C20 Pickup 1974-1973, C20 Suburban 1986-1973, K5 Blazer 1986-1975, K10 1986-1975, K10 Pickup 1974-1973, K10 Suburban 1986-1973, K20 1986-1975, K20 Pickup 1974-1973, K20 Suburban 1986-1973, R10 1987, R10 Suburban 1988-1987, R20 1987, R20 Suburban 1988-1987, R1500 Suburban 1991-1989, R2500 Suburban 1991-1989, V10 1987, V10 Suburban 1988-1987, V20 1987, V20 Suburban 1988-1987, V1500 Suburban 1991-1989, V2500 Suburban 1991-1989, GMC C15 1978-1975, C15/C1500 Pickup 1974-1973, C15/C1500 Suburban 1974-1973, C15 Suburban 1978-1975, C25 1978-1975, C25/C2500 Pickup 1974-1973, C25/C2500 Suburban 1974-1973, C25 Suburban 1978-1975, C1500 1986-1979, C1500 Suburban 1986-1979, C2500 1986-1979, C2500 Suburban 1986-1979, Jimmy 1991-1973, K15 1978-1975, K15/K1500 Pickup 1974-1973, K15/K1500 Suburban 1974-1973, K15 Suburban 1978-1975, K25 1978-1975, K25/K2500 Suburban 1974-1973, K25 Suburban 1978-1975, K1500 1986-1979, K1500 Suburban 1986-1979, K2500 1986-1979, K2500 Suburban 1986-1979, R1500 1987, R1500 Suburban 1991-1987, R2500 1989-1987, R2500 Suburban 1991-1987, V1500 1987, V1500 Suburban 1991-1987, V2500 1987, V2500 Suburban 1991-1987

Part Type

Suspension Shock Absorber

Product Overview

Chevrolet Blazer 1974-1973, Blazer 1991-1987, C10 1986-1975, C10 Pickup 1974-1973, C10 Suburban 1986-1973, C20 1986-1975, C20 Pickup 1974-1973, C20 Suburban 1986-1973, K5 Blazer 1986-1975, K10 1986-1975, K10 Pickup 1974-1973, K10 Suburban 1986-1973, K20 1986-1975, K20 Pickup 1974-1973, K20 Suburban 1986-1973, R10 1987, R10 Suburban 1988-1987, R20 1987, R20 Suburban 1988-1987, R1500 Suburban 1991-1989, R2500 Suburban 1991-1989, V10 1987, V10 Suburban 1988-1987, V20 1987, V20 Suburban 1988-1987, V1500 Suburban 1991-1989, V2500 Suburban 1991-1989, GMC C15 1978-1975, C15/C1500 Pickup 1974-1973, C15/C1500 Suburban 1974-1973, C15 Suburban 1978-1975, C25 1978-1975, C25/C2500 Pickup 1974-1973, C25/C2500 Suburban 1974-1973, C25 Suburban 1978-1975, C1500 1986-1979, C1500 Suburban 1986-1979, C2500 1986-1979, C2500 Suburban 1986-1979, Jimmy 1991-1973, K15 1978-1975, K15/K1500 Pickup 1974-1973, K15/K1500 Suburban 1974-1973, K15 Suburban 1978-1975, K25 1978-1975, K25/K2500 Suburban 1974-1973, K25 Suburban 1978-1975, K1500 1986-1979, K1500 Suburban 1986-1979, K2500 1986-1979, K2500 Suburban 1986-1979, R1500 1987, R1500 Suburban 1991-1987, R2500 1989-1987, R2500 Suburban 1991-1987, V1500 1987, V1500 Suburban 1991-1987, V2500 1987, V2500 Suburban 1991-1987

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

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
	umi6401-B	UMI Performance 73-87 GM C10 Handling Kit Stage 1 UMI Shocks - Black (2x bil24-009331, 2x bil24-192941, 1x umi6440-B, 1x umi6443-B)
	umi6401-R	UMI Performance 73-87 GM C10 Handling Kit Stage 1 UMI Shocks - Red (2x bil24-009331, 2x bil24-192941, 1x umi6440-R, 1x umi6443-R)
	umi6402-B	UMI Performance 73-87 GM C10 Handling and Lowering Kit Stage 2 4.5inF/6inR UMI Shocks - Black (2x bil24-009331, 2x bil24-192941, 1x umi6410, 1x umiCP4S4, 1x umi6452F, 1x umi6411, 1x umi6440-B, 1x umi6443-B)
	umi6402-R	UMI Performance 73-87 GM C10 Handling and Lowering Kit Stage 2 4.5inF/6inR UMI Shocks - Red (2x bil24-009331, 2x bil24-192941, 1x umi6410, 1x umiCP4S4, 1x umi6452F, 1x umi6411, 1x umi6440-R, 1x umi6443-R)
	umi6400-1	UMI Performance 73-87 GM C10 Lowering Kit (4.5in Front/6in Rear) with UMI shocks (2x bil24-009331, 2x bil24-192941, 1x umi6410, 1x umiCP4S4, 1x umi6452F, 1x umi6411)

• 46mm monotube design ensures consistent, fade-free performance in all conditions
• Specific tuning for stock height vehicles
• Uses OEM springs and mounting hardware
• Vehicle Specific Ride Tuning

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Product Details

Product Downloads

#	Document Type	Download
1.	Installation Instructions
2.	Catalog
3.	Material Safety Data Sheet

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information

Shock, 4600 Series, Monotube, Rear, Chevy, GMC, Each

Bilstein B6 4600 Series shocks and struts are designed to help your truck, van, or SUV reach its pinnacle in performance and handling, while still providing a comfortable, stable ride. Compared to conventional alternatives, these suspension parts offer superior control—using patented designs and dampening technology developed and tested in the real world. Order the model best suited for fitment on your vehicle.