BDS 6-Inch Lift Kit | FOX 2.5 Performance Elite Coil-Overs | Cast Steel Knuckles | 5-Inch Rear Block | Chevy Silverado / GMC Sierra 1500 4WD 2014–2018 | SKU: 710PES
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Before ordering, verify your vehicle details, current setup, and SKU with OFAS fitment support so your upgrade matches your build.
Shipping & Delivery
Free shipping is available within the lower 48 U.S. states. Large or heavy items may ship by freight, and delivery timing can vary by warehouse, carrier, and product availability.
Fitment, Shipping & Product Support
Verified Fitment
| Year Range | Make | Model | Drivetrain | Knuckle Type |
|---|---|---|---|---|
| 2014–2018 | Chevrolet | Silverado 1500 | 4WD | Cast steel knuckles only |
| 2014–2018 | GMC | Sierra 1500 | 4WD | Cast steel knuckles only |
Component Specifications
| Specification | Detail |
|---|---|
| SKU | 710PES |
| Brand | BDS Suspension |
| Front Lift Height | 6 inches — FOX 2.5 Performance Elite coil-overs |
| Rear Lift Height | 5 inches — axle block with FOX Performance Elite rear shocks |
| Shock Model | FOX 2.5 Performance Elite — external reservoir |
| Knuckle Type | Cast steel — confirm before ordering |
| Fuel Type | Gas / Diesel — confirm application |
| Drivetrain | 4WD only |
| Platform | K2 (2014–2018 Silverado/Sierra 1500) |
| Warranty | BDS No-Fine-Print Warranty + FOX 1-year limited warranty |
What Is and Is NOT Included
| Included | Not Included |
|---|---|
| FOX 2.5 Performance Elite coil-overs — pair (front) | Alignment — required post-install, buyer's responsibility |
| Cast steel knuckle-specific lift components | Extended brake lines if required by installer |
| 5-inch rear axle blocks | Wheels or tires |
| FOX Performance Elite rear shocks | |
| All required installation hardware | |
| BDS installation instructions |
Critical Compatibility
| Configuration | Compatibility |
|---|---|
| 2014–2018 Silverado 1500 4WD — cast steel knuckles confirmed | ✅ Correct application |
| 2014–2018 Sierra 1500 4WD — cast steel knuckles confirmed | ✅ Correct application |
| 2014–2018 Silverado/Sierra 1500 4WD — aluminum or stamped steel control arms | ❌ Wrong kit — order SKU 711PES |
| 2014–2018 Silverado/Sierra 1500 2WD | ❌ Not compatible — 4WD only |
| 2013 and earlier (GMT900 platform) | ❌ Different platform — kit does not apply |
| 2019 and newer (T1/T1XX platform) | ❌ Different platform — kit does not apply |
| Silverado/Sierra 2500HD / 3500HD | ❌ Not compatible — different suspension platform |
Knuckle type confirmation is mandatory before ordering. Cast steel knuckles are required for this kit. Aluminum or stamped steel control arms require SKU 711PES. Contact OFAS at (469) 407-7538 before ordering if you cannot confirm your knuckle type.
K2 Silverado/Sierra 1500 6-Inch Kit Variant Reference
| SKU | Knuckle Type | Shock | Rear System |
|---|---|---|---|
| 710PSS | Cast steel knuckles | FOX 2.0 Performance Series | 5-inch axle block |
| 710PES | Cast steel knuckles — this listing | FOX 2.5 Performance Elite | 5-inch axle block |
| 711PES | Aluminum or stamped steel | FOX 2.5 Performance Elite | 5-inch axle block |
| 717PES | Cast steel knuckles | FOX 2.5 Performance Elite | Replacement leaf springs |
Contact OFAS at (469) 407-7538 to confirm which SKU is correct for your knuckle type, shock preference, and rear system before ordering.
Installation Notes
Skill Level: Advanced. A 6-inch coil-over lift with 5-inch rear axle block on the K2 platform requires a qualified suspension shop. This is not a bolt-on leveling kit. Do not attempt DIY installation.
Required Tools:
- Full hydraulic lift rated for truck weight
- Coil-over compression tool
- Torque wrench
- Full socket and wrench set
Alignment: Full front-end alignment is mandatory after installation. Do not operate the vehicle on public roads before alignment is completed.
Knuckle Confirmation: Physically confirm or have a shop verify cast steel knuckles before ordering. Aluminum or stamped steel control arms require SKU 711PES. This is a hard stop — the wrong kit will not install correctly.
Rear Axle Block Installation: 5-inch axle blocks must be installed per BDS specifications. Confirm U-bolt torque specs and axle centering after installation. Improperly centered axle blocks cause driveline vibration and premature U-joint wear.
Reservoir Routing: Follow BDS and FOX installation instructions for FOX 2.5 PE reservoir placement. Avoid pinch points and heat sources. Incorrect reservoir routing causes premature shock failure.
Extended Brake Lines: Verify whether extended brake lines are required for your specific configuration at time of installation.
Torque Specs: Follow BDS-specified torque values included in the installation instructions. Do not substitute generic torque values on a lifted platform.
Tire Fitment: At 6 inches of lift on the K2 platform, typical fitment runs 35–37-inch tires depending on wheel offset and backspacing. Confirm maximum tire diameter and wheel specifications with your wheel and tire supplier before ordering.
The Obsidian Take
SKU 710PES is the premium-tier 5-inch block rear system for the 2014–2018 K2 Silverado or Sierra 1500 4WD owner with cast steel knuckles. FOX 2.5 Performance Elite coil-overs with external reservoir up front, 5-inch rear axle block, FOX PE rear shocks — a complete front-to-rear 6-inch system at the top of the FOX coil-over tier for this knuckle configuration and rear system combination.
The decision between 710PES and 710PSS is the shock tier only — same knuckle requirement, same 5-inch rear block, same platform. FOX 2.5 PE delivers larger piston diameter, external reservoir thermal management, and a more refined damping curve than the FOX 2.0 Performance Series. If you run this truck hard off-road, tow at the limits of the half-ton platform, or simply want the top damping tier available for this system — 710PES is the correct choice. If the FOX 2.0 Performance Series meets your use case and budget, 710PSS delivers the same lift geometry at a lower price point.
The decision between 710PES and 717PES is the rear system — 5-inch axle block here versus replacement leaf springs in 717PES. Both run FOX 2.5 PE. If you tow regularly or want a new spring rate at the rear, 717PES is the stronger long-term solution. If the 5-inch block system fits your use case, 710PES is the correct kit.
This kit is for you if: You own a 2014–2018 Silverado or Sierra 1500 4WD with confirmed cast steel knuckles, you want 6 inches of front lift with a 5-inch rear axle block, and you want FOX 2.5 Performance Elite damping — not the FOX 2.0 entry tier and not a leaf spring rear.
This kit is not for you if: You have aluminum or stamped steel control arms — order SKU 711PES. You want FOX 2.0 instead of FOX 2.5 PE — order SKU 710PSS. You want replacement leaf springs at the rear — order SKU 717PES. You are running a 2013 or earlier GMT900, a 2019 or newer T1/T1XX, a 2WD, or a 2500HD/3500HD. Confirm your knuckle type before ordering — the kit is non-returnable once installed.
Common Questions
What is the difference between SKU 710PES and SKU 710PSS?
Both kits fit the 2014–2018 Silverado/Sierra 1500 4WD with cast steel knuckles and deliver 6 inches of front lift with a 5-inch rear axle block. The only difference is the shock tier — 710PES uses FOX 2.5 Performance Elite with external reservoir and 710PSS uses FOX 2.0 Performance Series. If you wheel hard, tow at capacity, or want the top damping tier, order 710PES. Call (469) 407-7538 to confirm which is correct for your use case.
What is the difference between SKU 710PES and SKU 717PES?
Both kits fit the 2014–2018 Silverado/Sierra 1500 4WD with cast steel knuckles and use FOX 2.5 Performance Elite coil-overs up front. The difference is the rear system — 710PES uses a 5-inch axle block and 717PES uses replacement leaf springs. If you tow regularly or want a new spring rate at the rear, 717PES is the stronger long-term solution. Call (469) 407-7538 to confirm which rear system fits your use case.
What is the difference between SKU 710PES and SKU 711PES?
Knuckle type. SKU 710PES is for cast steel knuckles with a 5-inch axle block rear. SKU 711PES is for aluminum or stamped steel control arms with a 5-inch axle block rear. Both run FOX 2.5 PE. Confirm your knuckle type before ordering — these kits are not interchangeable.
How do I confirm my knuckle type?
Have a shop verify before ordering, or contact OFAS at (469) 407-7538. Do not estimate — the knuckle type determines which kit applies and the kits are not interchangeable.
Does this kit include rear lift?
Yes. SKU 710PES includes 5-inch rear axle blocks and FOX Performance Elite rear shocks. This is a complete front-to-rear system.
What size tires fit at 6-inch lift on the K2 platform?
Typical fitment runs 35–37-inch tires depending on wheel offset and backspacing. Confirm maximum tire diameter and wheel specifications with your wheel and tire supplier before ordering.
What warranty covers this kit?
BDS suspension components are covered by the BDS No-Fine-Print Warranty. FOX 2.5 Performance Elite shocks carry a FOX 1-year limited warranty.
Manufacturer Data Disclaimer: Specifications sourced from BDS Suspension product documentation and authorized distributor data. Obsidian Forged Auto Supply is an authorized BDS Suspension dealer. Manufacturer specifications are subject to change without notice.
⚠️ California Proposition 65 Warning: This product may expose you to chemicals known to the State of California to cause cancer or reproductive harm. For more information visit P65Warnings.ca.gov.
⚠️ Non-Returnable Notice: Suspension components are non-returnable once installed. Confirm knuckle type, year, and drivetrain before ordering. Call (469) 407-7538 with any fitment questions before your order is placed.