Tuff Country 13712KN 3" Lift Kit with Heavy Duty Front Springs with Rear Blocks with SX8000 Shocks
Tuff Country
13712KN
Pairs well with
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Limited Lifetime Warranty
Made in the USA
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Tuff Country 13712KN 3" Lift Kit with Heavy Duty Front Springs with Rear Blocks with SX8000 Shocks
Product Details
Description
The Tuff Country 13712KN 3-inch Lift Kit with SX8000 Shocks is a purpose-built suspension upgrade for classic GM 4x4s, delivering reliable ground clearance and a balanced, controlled ride. Designed for 1973–1987 Chevrolet Blazer, Suburban, and Truck K1500 4WD (and their GMC equivalents), this kit combines heavy-duty front springs, rear blocks, and SX8000 shocks for confident, off-road-ready performance.
- Lift height: 3-inch front lift to improve ground clearance and overall stance, compatible with larger tires for enhanced off-road capability.
- Front springs: Heavy-duty leaf springs engineered to handle big‑block engines and heavy loads while maintaining ride stability.
- Rear components: Rear blocks and associated hardware to maintain proper axle position and wheel alignment after lifting.
- Shocks: SX8000 shocks included for improved damping, smoother highway ride, and better control on rough terrain.
- Noise reduction: Teflon pads incorporated to minimize squeaks and ensure a quieter ride over varied surfaces.
- Install time: Average 4–6 hours for a straightforward bolt-on installation with common shop tools.
- Tire compatibility: Designed to work with 33" x 12.5" tires to maximize the lift’s performance and ground clearance.
- Warranty: Limited lifetime warranty on leaf springs for long-term peace of mind.
- Fitment notes: Will Not Fit Diesel Engine Models; Fits 1/2-ton GM 4WD models from the era.
With this kit installed, your GM 4x4 will enjoy increased ground clearance, the ability to run larger tires, and improved load-handling capability without sacrificing on-road manners. The combination of heavy-duty front springs, rear blocks, and SX8000 shocks provides confident damping across highways and trails, while the teflon pads minimize noise for a calmer daily drive. Backed by a trusted brand with decades of suspension expertise and a limited lifetime leaf-spring warranty, the Tuff Country 13712KN kit is a practical, durable upgrade for enthusiasts restoring or leveling up these classic GM 4x4s.
| Year Range | Make | Model | Drivetrain | Fitment Note |
|---|---|---|---|---|
| 1973-1987 | Chevy | Blazer | 4WD | Will Not Fit Diesel Engine Models |
| 1973-1987 | Chevy | Suburban K1500 | 4WD | Will Not Fit Diesel Engine Models. Fits 1/2 Ton Models. |
| 1973-1987 | Chevy | Truck K1500 | 4WD | Will Not Fit Diesel Engine Models. Fits 1/2 Ton Models. |
| 1973-1987 | GMC | Jimmy | 4WD | Will Not Fit Diesel Engine Models |
| 1973-1987 | GMC | Suburban K1500 | 4WD | Will Not Fit Diesel Engine Models. Fits 1/2 Ton Models. |
| 1973-1987 | GMC | Truck K1500 | 4WD | Will Not Fit Diesel Engine Models. Fits 1/2 Ton Models. |
Specifications:
Packaging Details
FAQs
Please read our FAQs page to find out more.
Will this part fit my vehicle?
Fitment varies by year, make, model, drivetrain, and lift height. Always use the vehicle fitment selector or refer to the fitment notes on the product page before purchasing. If you’re unsure, our team can help confirm compatibility.
Are Tuff Country products street legal?
Most Tuff Country products are designed for on-road and off-road use, but local laws and regulations vary by state and country. It is the customer’s responsibility to ensure compliance with local vehicle regulations after installation.
Is professional installation required?
Professional installation is recommended but not required. Many products can be installed by experienced DIYers with proper tools. However, improper installation can affect ride quality, safety, and warranty coverage.
Will this affect my ride quality?
Tuff Country products are engineered to balance ride comfort, performance, and durability. Ride quality can change depending on lift height, vehicle setup, tire size, and other suspension components.
Are Tuff Country products covered by a warranty?
Yes. Tuff Country products are backed by a manufacturer warranty that covers defects in materials and workmanship. Warranty terms vary by product type and do not cover damage caused by misuse, improper installation, or normal wear.
Can I run larger tires with this product?
Many Tuff Country lift kits and suspension components allow for larger tire sizes, but maximum tire clearance depends on wheel offset, tire width, and vehicle configuration. Refer to the product details or contact support for guidance.
What is the return policy?
Unused, uninstalled products may be eligible for return within the stated return window. Items must be in new condition and returned in original packaging. Shipping costs and restocking fees may apply.
Who can I contact if I have questions?
Our customer support team is available to help with fitment questions, installation guidance, and order support. Reach out before purchasing if you want to ensure you’re selecting the right part for your build.
Free shipping on Orders Over $75
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Selling Suspension Systems for 35+ Years
Tuff Country EZ-Ride Suspension was incorporated over 35 years ago, realizing the desperate need for quality suspension products in the after market world.