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Superlift 2020 GM 2500/3500HD 6in Front Component Box - Rear Crossmember

SKU: SLF3420

Suspension Lift Kit Components

SLF Lift Kits Component Box...

Superlift 2020 GM 2500/3500HD 6in Front Component Box - Rear Crossmember

SKU: SLF3420

Suspension Lift Kit Components

SLF Lift Kits Component Box...

A$697.13
Limited Availability from MFR Limited stock available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical orders of this part. This item is not held in our own warehouse, and availability and release timing may vary depending on manufacturer stock movements and processing at the time of ordering.

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Description

Superlift 2020 GM 2500/3500HD 6in Front Component Box - Rear Crossmember

Established in 1975, Superlift remains a pioneer in the industry, and is one of the few suspension companies operated by true truck and off-road enthusiasts. We are passionate about trucks, wheeling and an outdoor lifestyle that go hand-in-hand. We can talk the talk because we walk the walk.This question.... ''What's best for the customer?''... is always at the top of our list in everything we do, from product planning and design to customer service. This simple guiding principal has served us well for decades, and will continue to guide us into the future.We are proud to provide the truck, Jeep and SUV owner products that perform better than advertised. We understand that most people spend the majority of their windshield time on-road, and our designs reflect this. You will be 100% satisfied with our products on-road or off - we guarantee it! Determining what product is right for your vehicle and lifestyle can be a complicated task, especially with so many companies and options to choose from. We urge you to carefully research your purchase. Most lift kits represent a considerable investment, and you will literally live with your choice for years. Talk to fellow off-roaders, and your local automotive specialty shop before making a purchase. We love to talk shop, and we encourage you to give our tech staff a call. Bottom line... if you do your homework, you'll discover that we've done ours.

Additional Information

Front Comp Box-Rear Crossmember-2020-2022 GM 2500/3500HD 6in.

Additional Application Notes
• 6 in. Lift; Front; Rear Crossmember; For PN [K255B]

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
slfK255B Superlift 2020 Chevrolet Silverado 2500/3500 HD 6in Lift Kit w/ Bilstein Shocks (1x slf84040, 1x slf3410, 1x slf3411, 1x slf3413, 1x slf3414, 1x slf3420)
slfK255S Superlift 20-22 Chevrolet Silverado 2500/3500 HD 6in Lift Kit (1x slf3410, 1x slf3411, 1x slf3413, 1x slf3414, 1x slf3420, 1x slf84170)

Data: v2 - Desc: v4.2 - Upd: 2026-11-08 11:44:22

Data: v4.2 - Upd: 2026-11-08 12:40:45

Features

  • Component Box

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.

Specifications

Product Details

Description:Rr Xmember Box-20-22 HD 6in.
Lift/Drop Height:6 in.
Part Number:slf3420

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Superlift, Superlift Suspension
StreetFX SKU slf3420
SFX Item ID 4180012
Accounting SKU slf-3420
Manufacturer SKU 3420
Manufacturer UPC 804260105860
Alternative References SLF-3420

Front Comp Box - Rear Crossmember - 2020-2022 GM 2500/3500HD 6"

Product Attributes
BrandSuperlift Suspension
Manufacturer's Part Number3420
Part TypeSuspension Lift Kit Components
UPC804260105860

Compatibility

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