Suspension Lift Kit | ReadyLift | 8.0 Inch | GM

SKU RL-42-30840

ReadyLift 8 inch MAX3.3 suspension system 42-30840 for the Chevy Silverado and GMC Sierra delivers first-class ride and handling with plenty of tire clearance and a great-looking lifted stance for your GM truck. The kit features front upper control arms and knuckles, skid plate and rear lift blocks. Also included are new Falcon 3.3 Fast Adjust Monotube front and rear shocks.

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Product Specifications

Front Lift Height:8"
Lift Type:Lifted Knuckles/Blocks
Max Tire Size:37"
Recommended Tire Size37x12.50 with a 20×9” with a 0 offset wheel

Typically ships in 2 to 3 business days.

Product Specs for ReadyLIFT Suspension, Inc. 42-30840

Front Lift Height:8"
Lift Type:Lifted Knuckles/Blocks
Max Tire Size:37"
Recommended Tire Size37x12.50 with a 20×9” with a 0 offset wheel
Instructions: ReadyLift 42-30840 Installation Instructions.
UPC: 194933366453
MPN: 42-30840

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ReadyLIFT Suspension, Inc. 42-30840 Details

ReadyLift MAX3.3 Suspension Systems delivers first-class ride and handling with plenty of tire clearance and a great-looking lifted stance for the Chevy Silverado and GMC Sierra. The kit includes Laser cut, CNC formed heavy-duty front and rear drop crossmembers., durable lifted knuckles and and fabricated steel rear block.

The Falcon 3.3 Fast Adjust shocks are adjustable for specific terrain or handling characteristics. The dampers quickly adjust the ride from Soft to Firm with a quick flip of the Fast Adjust Knob, or anywhere in between using the 8-position Micro Adjust Dial.

Features

8 inch Lift Kit GM HD Trucks
Heavy-duty fabricated steel components utilizing 3/16″ and 1/4″ steel plate.
Full-coverage differential skid plate constructed from 3/16″ steel plate.
Laser cut, CNC formed heavy-duty front/rear drop crossmembers.
Allow up to 37x12.50 with a 20×9” with a 0 offset wheel.
Xtreme-Duty fabricated 4130 chromoly steel upper control arms.
3.3 Fast Adjust Dampers offer a wide range of adjustability for specific terrain and/or handling characteristics with two separate knobs to tune to your preference.
3-Position Fast Adjust Knob for Soft, Custom, and Firm Compression.
Soft mode allows a partial bypass of the main piston for a softer ride.
8-Position Micro Adjust Dial offers refined damping adjustments.
Reservoir design increases nitrogen to oil ratio for consistent damping over wide temperature ranges.
Hard Anodized Large Bore 6061-T6 Aluminum Shock Body for impact and corrosion resistance as well as increased oil volume for consistent performance.
VOD (Volume Optimized Damping) features a digressive linear piston for quicker ramp-up for reduced body roll and an overall increase in damping to reduce bottom out when pushed to the limit.
Red Line high VI shock oil for consistent performance across all temperatures from -50F to 450F with anti-wear and lubricity agents.

Components

Heavy Duty welded steel crossmembers
Heavy Duty iron knuckles
Cast iron rear lift blocks with integrated bump stop landing pads
Forged torsion keys with the proper amount of indexing
Heavy duty skid plate
Assorted hardware and accessories
Includes 4 Falcon 3.3 Shocks

Vehicle Application Guide for ReadyLIFT Suspension, Inc. 42-30840

The RL-42-30840 Suspension Lift Kit | ReadyLift | 8.0 Inch | GM is engineered to work with specific vehicles displayed below. Can't find your vehicle, or need assistance, please give us a call at 1-800-358-4751 or 1-989-755-0561. Browse the category Lift Kits Lift Kits by ReadyLIFT , to view all vehicle makes and models.

Chevrolet
GMC

Year	Make	Model	Vehicle Option	Installation Notes
2020	Chevrolet	Silverado 2500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.
2021	Chevrolet	Silverado 2500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.
2022	Chevrolet	Silverado 2500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.
2023	Chevrolet	Silverado 2500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.
2024	Chevrolet	Silverado 2500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.
2024	GMC	Sierra 2500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.
2023	GMC	Sierra 2500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.
2022	GMC	Sierra 2500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.
2021	GMC	Sierra 2500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.
2020	GMC	Sierra 2500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.
2021	Chevrolet	Silverado 3500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.
2022	Chevrolet	Silverado 3500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.
2023	Chevrolet	Silverado 3500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.
2024	Chevrolet	Silverado 3500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.
2020	Chevrolet	Silverado 3500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.
2024	GMC	Sierra 3500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.
2023	GMC	Sierra 3500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.
2022	GMC	Sierra 3500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.
2021	GMC	Sierra 3500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.
2020	GMC	Sierra 3500 HD	Fits 4 Wheel Drive; Fits Rear Wheel Drive	Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle. In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation. You may incur additional costs to adjust the headlamp system. If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation. In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.

Customer Q&A - ReadyLIFT Suspension, Inc. 42-30840

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ReadyLIFT Suspension, Inc.

ReadyLift Suspension Inc. was founded on the principals of developing a line of economical suspension leveling products that would allow Truck and SUV owners to be able to “level” their vehicle in order to install Plus-size wheels and tires.

ReadyLift® Founder and CEO Scott Poncher realized that there was a huge consumer market that didn’t want a tall lift kit that would compromise gas mileage and that important nice factory ride. The ReadyLift line of suspension products was developed to provide consumers with a cost-effective alternative for their needs, essentially designing the exact product they were looking for. The core concept was pure and focused. Develop a line of suspension leveling products that would level a vehicle correctly, safely and without having to modify any of the factory components. ReadyLift stands by the statement that if you are going to lift your truck or SUV, there is only one brand that stands for quality and that brand is ReadyLift.

The combination of advanced technology, powerful marketing and innovative research and development have leveraged ReadyLift as the leading manufacture of leveling kits, lift kits, block kits, and the new Off Road Suspension systems. ReadyLift is constantly growing their product line with innovative product to give customers what they want. Most ReadyLift products are made in the USA and have a Limited Lifetime Warranty.

ReadyLift Warranty

Limited Lifetime Warranty

On all ReadyLift lift kits.

ReadyLIFT Off Road Suspension Series products are designed for off road use and are warranted as such against defects or damage to the product when used during off road driving.
All Jeep SST Lift Kit products are warranted when used in an off-road environment.

5 year - 60,000* mile Powertrain Warranty available when you purchase a qualifying ReadyLIFT suspension system and have it installed by a qualified professional installer.

What the warranty does not cover

Shock absorbers are not covered under the lifetime warranty. All freight charges are not covered. ReadyLIFT leveling kit, block kits and lift kit products are NOT intended for off-road abuse. Any abuse or damage as a result of off road use voids the warranty of the ReadyLIFT product.

You can view the full details of ReadyLIFT’s warranty here.

How to get service

Call ReadyLIFT at 1-800-549-4620 to get return authorization # for any return.

Customers are responsible for shipping back to ReadyLift. Uninstalled product returns must be in original Readylift packaging and include the outer carton or protective carton when shipping returns back to ReadyLIFT. If the product does not have an outer box customer will be charged an additional $10.00 re-box charge to the restocking fee.