Product Overview
RTZ Chevrolet Silverado GMC Sierra 1500 4/6 Lowering Kit – 4" Front Drop Spindles & Coil Springs + 6" Rear Flip Kit + DoestchTech Premium Nitro Shocks (1999–2006 2WD V8)
The RTZ 4/6 lowering kit for the 1999–2006 Chevrolet Silverado and GMC Sierra 1500 2WD V8 delivers a 4-inch front and 6-inch rear drop paired specifically with DoestchTech Premium Nitrogen Gas Charged Slammer Shocks, a complete slam package for V8 owners who want proven DoestchTech damping to complement their lowered stance. This bundle includes ductile iron 2-inch drop spindles, load-tested 2-inch front lowering coil springs, a rear axle flip kit, a frame notch kit, and the full DoestchTech Premium nitro shock set. If you're looking to buy a Silverado Sierra 4/6 lowering kit with DoestchTech shocks online, this is the V8-specific package built around that combination.
The front drop system pairs 2-inch ductile iron spindles with 2-inch load-tested coil springs, a proven combination that achieves the full 4-inch front drop while keeping steering geometry correct and ride quality smooth. At the rear, the axle flip kit repositions the rear axle above the leaf springs for the full 6-inch drop, with a frame notch kit included for the clearance required to run this configuration properly. DoestchTech Premium nitro slammer shocks are tuned for lowered ride height and deliver the handling refinement a properly slammed Silverado demands.
What's Included:
- Pair of 2-inch ductile iron drop spindles front
- Front lowering 2-inch coil springs, load-tested
- Rear axle flip kit, 6-inch rear drop
- Frame notch kit required for full drop clearance
- Full set of DoestchTech Premium Lowered Nitrogen Gas Charged Slammer Shocks
- Designed in the USA; rolled steel, welded, CNC lasered, ductile iron formed, chromoly shaft precision machined, certain parts robotic welded
- Powder-coated to prevent corrosion
- Must run 17-inch or larger rims
- Primarily bolt-on installation with required frame notching
- Limited Lifetime Warranty
Fitment: Compatible with 1999–2006 Chevrolet GMC Silverado Sierra 1500 Pickup 2WD V8. Please check our other listings for different drop heights and V6 options.
For V8 Silverado and Sierra owners who specifically want DoestchTech Premium shocks in their lowering package, this is the kit. The DoestchTech Nitro Slammer shocks are engineered for lowered applications and provide the refined damping and handling that
makes a slammed full-size truck actually enjoyable to drive, not just good to look at. Frame notching is required, 17-inch or larger wheels are mandatory, and professional installation by a qualified technician with proper equipment is strongly recommended. Please inspect all parts before beginning installation.
Get a 5% discount at checkout. Use code "RIDETRENDZ"
Browse our full range of Chevrolet GMC Silverado Sierra Lowering Kits to compare shock options and drop heights across the full 1999–2006 Silverado lineup. For more on what a 4/6 drop does to your truck's ride and handling, read our guide on the benefits, risks, and the right lowering kit to buy.
Order the RTZ Silverado Sierra 4/6 lowering kit with DoestchTech shocks today and get your V8 Silverado slammed with the damping quality it deserves.
Frequently Asked Questions
- How does this kit differ from the RTZTech Primo shock version of the 4/6 V8 kit?
Both kits achieve the same 4-inch front and 6-inch rear drop on the 1999–2006 Silverado and Sierra 1500 2WD V8. The difference is the included shocks this kit comes with: DeutschTech Premium Nitro Charged Slammer Shocks, while the other version includes RTZTech Primo Nitro Shocks. Both are nitrogen gas-charged and tuned for lowered applications. - Does this kit include a decal?
This kit does not list a decal in the included components. Please check our other listings or contact us directly if you have questions about what is included. - What wheel size is required for this lowering configuration?
You must run 17-inch or larger rims with this kit due to the larger brake components associated with the spindle-based front drop system.
