Dirt King +4.25" Long Travel Race Kit for 1999–2006 Chevy/GMC 1500 (2WD) – DK-632909

+4.25" per side. 17.5" of front wheel travel. This is where your 1999–2006 Chevy/GMC 1500 stops pretending and starts playing in real long travel territory. Built for drivers who want race-inspired width, real articulation, and suspension that doesn’t flinch when the terrain gets violent.

This system is engineered to improve off-road handling without wrecking daily drivability, using proven geometry and heavy-duty components designed for real use.

Performance Specifications

• Wheel Travel: 17.5"
• Track Width: +4.25" per side
• Lift Range: 0-4"
• Maximum Tire Size: 37"
• Maximum Backspacing: 4.5"
• Minimum Wheel Diameter: 17"
• Coilover Size: 2.5 x 10"
• Bypass Shock Size: 3.0 x 10"
• Bump Stop Size: 2.0 x 2.0

Engineering & Construction

• Utilizes Probearing bearings
• 4130 chromoly uniball cups
• ¾" heims for the UCA's
• Delrin bushings for the LCA's
• Zinc plated inner bushing sleeves
• Grease fittings for easy servicing
• Pocketed lower shock mounting
• 3/16" & 1/8" boxed plate construction
• Internally ribbed with extrusions for weight reduction
• Bump stop plating
• Limit strap tabbing

Shock & Setup Guidance

• Required coilover size: 2.5 x 10" (to match proper long travel specs).
• Bypass compatibility: 3.0 x 10" (advanced damping control and tunability).
• OEM-style replacement coilovers may work with the correct spacers/spring setup, but can limit total wheel travel compared to properly spec-built long travel shocks.
• If you’re unsure what shocks or setup to run, iShock can help you spec the right configuration for your terrain and driving style.

Tire Fitment Notes

• When using 37” tires with this kit modifications to the wheel well will need to be made.
• The firewall pinch weld will need to be folded over to avoid contact while turning.
• The upper wheel well will also need to be modified to avoid contact at full bump.

What’s Included

• Boxed plate upper control arms
• Boxed plate lower control arms with pocketed shock mounts
• 9" quad wrapped limit straps
• Weld on adjustable limit strap mounts
• 17-4 stainless steel misalignment spacers
• 17-4 stainless steel steering clevis's
• Fabricated shock towers
• Billet aluminum heimed tie rods
• DOT approved extended brake lines
• Grade 8 mounting hardware
• Durable black powder coat finish

Why Buy From iShock?

iShock is a factory-authorized sales, service, and installation center with decades of suspension experience. If you want help pairing shocks, dialing spring rates, or planning a complete long travel build, we’ve got you covered.