KSP PERFORMANCE 2" Rear Lowering Shackles for Silverado Sierra 1500 1999-2019 — Adjustable 1–2" Drop, Greaseable Polyurethane Bush

KSP PERFORMANCE 2" rear lowering shackle kit is an adjustable 1–2" drop solution engineered for 1999–2019 Chevy Silverado and GMC Sierra 1500 trucks to lower ride height while retaining factory-style pivoting suspension.

This pair of rear lowering shackles replaces OE components to create a 1"–2" drop for select 2WD and 4WD Silverado/Sierra 1500 models (6-lug only). Built with threaded zerk-fitting holes, greaseable polyurethane bushings, TIG welding and a rust-resistant powder coat, these shackles are designed to be a durable, serviceable aftermarket option that installs without welding. The kit includes two shackles, two grease zerks and instructions—plus customer support and a parts warranty.

How much will these shackles lower my Silverado or Sierra?

The KSP PERFORMANCE shackles are adjustable to produce a drop between 1" and 2" depending on orientation and vehicle year. Some installations may require different washer placement for 2020 or later models, so confirm fitment before ordering.

• Adjustable drop: 1"–2" depending on shackle position
• Fits 1999–2019 Silverado/Sierra 1500 (6-lug) 2WD and 4WD
• 2020+ trucks may need additional washers for correct ride height

Will these shackles hold up to regular driving and maintenance?

Yes—these shackles are manufactured with durable features to extend service life and simplify upkeep. Replaceable polyurethane bushings resist wear better than stock rubber, and the tapped zerk holes accept grease fittings to maintain smooth operation and reduce squeaking.

• Replaceable, greaseable polyurethane bushings for quieter operation
• TIG-welded construction for stronger reinforcement
• Powder-coated finish helps prevent corrosion in harsh conditions

How difficult is installation and what hardware is included?

Installation is straightforward and does not require welding; shackles bolt in place using existing mounting points. The kit ships with two lowering shackles, two grease zerks and installation instructions; exact orientation may vary by model year, so follow the guide or contact support if unsure.

• No welding required—bolts into factory locations
• Includes 2x shackles, 2x grease zerks and Pro instructions
• Manufacturer support for fitment questions and 12-month replacement

Are there any prep steps or maintenance tips I should know about?

Before final installation, screw the provided grease fittings into the tapped holes and add grease to prevent initial squeaks. Periodic lubrication and inspection of the polyurethane bushings will prolong service life and maintain smooth rear suspension movement.

• Install grease zerks before mounting the shackles
• Grease fittings regularly to prevent squeaking and wear
• Inspect powder coat and bushings during routine maintenance

Who is this for: These KSP PERFORMANCE adjustable rear lowering shackles suit owners of 1999–2019 Chevrolet Silverado and GMC Sierra 1500 trucks (6-lug) who want a controlled 1"–2" drop without complex fabrication. Ideal for drivers seeking a cleaner stance, improved rear rake, or a simple reversible lowering solution with serviceable bushings and grease access. If you run a 2020 or later model, check washer requirements before purchase; contact KSP PERFORMANCE support for fitment guidance or parts replacement under the included 30-day refund and 12-month replacement policy.