Kryptonite Stage 3 Leveling Kit with Fox 2.5 Performance Elite Shocks for 2019+ Chevy/GMC 1500 AT4/Trail Boss

Fits:

• 2019+ Chevy Silverado 1500 Trail Boss
• 2019+ GMC Sierra 1500 AT4

Important Fitment Information:

• Designed specifically for Trail Boss and AT4 models
• Not compatible with vehicles originally equipped with Adaptive Ride Control (ARC)
• Not compatible with vehicles equipped with Super Cruise
• FOX 2.5 Performance Elite coil-overs provide approximately 1.5” of additional front lift
  
• Allows clearance for up to a 33” tire (actual fitment may vary based on tire design and wheel specifications)

Tire Clearance Notes:

• When used with OEM wheels, maximum recommended tire tread width is 11.2”
• Tires exceeding 11.2” tread width will require wheels with 5.6” backspacing or less

Features:

• Premium Suspension Upgrade – Combines FOX 2.5 Performance Elite reservoir coil-overs, FOX Performance Elite rear shocks, and Kryptonite Upper Control Arms into a complete bolt-on suspension package.
• 1.5” Additional Front Lift – FOX Performance Elite coil-overs are preset to provide approximately 1.5” of additional front lift while maintaining excellent ride quality and vehicle control.
• Remote Reservoir Technology – External reservoirs increase shock oil and nitrogen capacity for improved cooling, consistency, and fade resistance under demanding conditions.
• Dual Speed Compression (DSC) Adjusters – Independently tune low-speed and high-speed compression damping to match driving conditions, vehicle weight, and terrain.
• Race-Proven FOX Performance Elite Shocks – Derived directly from FOX off-road racing technology and engineered for maximum control in challenging environments.
• 2.5” Aluminum Shock Bodies – Impact-extruded and CNC-machined aluminum bodies efficiently dissipate heat while resisting corrosion.
• Internal Floating Piston (IFP) Design – Separates shock oil from the nitrogen charge to reduce aeration and maintain consistent damping performance.
• Heavy-Duty Boxed Upper Control Arms – Laser-cut and robotically welded steel construction provides exceptional strength and durability.
• Bolt-On Upper Ball Joints – Serviceable design allows individual ball joint replacement without replacing the complete control arm.
• Optimized Suspension Geometry – Upper control arms help maintain proper ball joint angles and suspension travel at the increased ride height.
• Increased Tire Clearance – Allows clearance for up to a 33” tire when used with the recommended wheel specifications.
• Direct Bolt-On Installation – No cutting, welding, or permanent modifications required.

Description:

The Kryptonite Stage 3 FOX 2.5 Performance Elite Suspension Kit represents the highest level of bolt-on suspension performance available for 2019+ Chevrolet Silverado 1500 Trail Boss and GMC Sierra 1500 AT4 models. Combining FOX’s premium Performance Elite reservoir shocks with Kryptonite’s heavy-duty boxed upper control arms, this complete suspension package is engineered for owners who demand exceptional ride quality, increased capability, and maximum control both on and off the pavement.

FOX Performance Elite Series shocks are built using technology developed through years of off-road racing competition. Featuring large-diameter 2.5” aluminum shock bodies, external reservoirs, and Internal Floating Piston (IFP) technology, these shocks provide increased oil and nitrogen capacity for superior heat management and consistent performance during extended use. The remote reservoir design helps resist shock fade while improving damping control in harsh environments.

What truly separates the Performance Elite series from standard shock options is the inclusion of Dual Speed Compression (DSC) adjusters. These externally adjustable controls allow drivers to fine-tune both low-speed and high-speed compression damping, providing the flexibility to optimize ride quality, towing performance, load carrying characteristics, or off-road handling based on individual needs.

To complement the upgraded FOX suspension, Kryptonite Upper Control Arms are included to maintain proper suspension geometry and ball joint operating angles at the increased ride height. Manufactured from laser-cut steel and robotically welded into a heavy-duty boxed design, these control arms provide the strength, reliability, and serviceability expected from Kryptonite Products.

Whether you’re building the ultimate daily driver, overland rig, tow vehicle, or weekend adventure truck, this complete suspension package delivers premium ride quality, outstanding durability, and race-inspired performance while providing clearance for up to a 33” tire.

Order processing times

Most orders will be processed in up to 72 hours. During seasonal times such as Black Friday, order processing time can take up to 5 business days. We appreciate your patience as we prepare your order.

Shipping times 

Shipment dates & lead times will vary based on product availability, product may not be in stock. If you have a question regarding availability please email or call the office to discuss lead times. By completing payment, you have acknowledged the terms and conditions stated. As stock changes daily, we do not hold inventory, first come, first serve.

Currently some brands are experience major delays - contact us or more information.

Local pickup

We currently offer free pickup from our location. You will be notified via email or phone when your item(s) are ready for pickup. 

Returns

We will accept returns within 30 days of original purchase and provide a store credit ONLY, no cash or credit card refunds will be given. All returns are subject to a 20% restocking fee. The product must still be in the original clean packaging, unused and uninstalled. We do not refund shipping and handling charges and the customer is responsible for all return shipping charges. There will be an additional rebox fee charged if the packaging needs to be replaced so please double box your returns. There is no returns of special order, tuners or custom parts.

Cancellations 

Custom parts may not be canceled once your order is placed. Cancelled Orders may be subject to a 15% cancellation fee. All returns must be pre-authorized with a Battle Born Offroad Employee and have an RGA # or they will be returned to you. Refunds will be processed within 48hrs once product is received and in original condition. Most refunds are issued to the original payment method, or by check. Please allow up to 7 business days for store credit to reflect.

Website errors

In the event a product is listed at an incorrect price due to typographical, photographic, or technical error or error in pricing information received from our suppliers, Battle Born Offroad Ltd shall have the right to refuse or cancel any orders placed for product listed at the incorrect price.

Payment processing

By clicking checkout, you agree to have your payment ran anytime after checkout. Some orders may not be charged right away, and you authorize Battle Born Offroad to charge your card up to 365 days after completing your purchase for the maximum amount you paid.

SOME ORDERS DO NOT SHIP RIGHT AWAY

Most Orders will ship within 72hrs. Some parts may not in stock and may incur a 1-52 week time due to limited availability. If you want to check the most up to date lead times on any of these products please email us at info@BattleBornOffroad.net

How can I contact you if I have questions before ordering?
You can call us directly at 702-333-0868, email our support team, or message us on our chat or on social media. We’re here to help you with fitment, installation, and product questions before you commit to a purchase.

Do you price match other retailers?
Yes, we strive to offer the best prices in town. If you find a lower advertised price from an authorized dealer, let us know—we’ll do our best to match or beat it. Some exclusions may apply for clearance or special-order items.

What is your shipping policy and how long will my order take?
We offer free or discounted shipping on most orders over $99. Orders typically ship within 1-3 business days; once shipped, standard transit times depend on your location, but generally most transit time is 2-3 days. Expedited shipping is available at checkout, and offers delivery as quick as 24hrs. Tracking info will be provided once your package is in transit and will be sent electronically to your email. 

Do you offer installation services or do you only sell parts?
Yes, Battle Born Offroad offers professional installation in our Las Vegas shop for ALL products we sell (suspension, lift kits, lighting, etc.). If you’re interested in installation, please hit our live chat button, give us a call at 702-333-0868 or email us to get a quote or get on the schedule. We can assist with shipping your vehicle to us if you are out of state and build trucks from around the country!

What warranty do your products come with?
All of our products come with a manufacturer’s warranty covering defects in materials and workmanship. Warranty durations vary by product and brand. Damage from misuse, improper installation, or off-trail abuse may not be covered. To initiate a claim or have questions, please reach out to us via email at info@battlebornoffroad.net and please submit photos, your order number and a brief description of the issue you are facing. 

Do you offer financing or payment plans?
Yes, we partner with financing providers (Affirm, Shop Pay, SNAP Finance & Koalifi) so you can pay over time. Options like “buy now pay later” or longer-term payment plans may be available. Terms and interest will depend on your credit. Affirm and Shop Pay will be shown during checkout and must be clicked during this process. Other options are offered in store or on the phone, please feel free to call us at 702-333-0868 to discuss more. 

How do you handle damages or defects in shipping?
Please inspect your package immediately upon arrival. If you notice any shipping damage, take clear photos of the damage and packaging and email us within 24 hours of delivery. We will work to make it right, either replacement of the part, or arranging return/reimbursement as needed.

Still have a question?
See all our Frequently Asked Questions or contact us with questions.