Description
410520 Rear Lowering Shackle Replacement for Chevy C1500/C2500/K1500/K2500, Suburban, S10 Blazer, GMC Yukon & Sierra 1500 Classic Limited
Drop the rear of your truck the right way. The iFJF 410520 Rear Lowering Shackles are precision-engineered, bolt-on replacements for factory shackles that lower your truck's rear ride height by 1-2 inches while maintaining proper suspension geometry and pinion angle. Constructed from thick-gauge heavy-duty steel with a durable powder coat finish, these shackles are a cost-effective alternative to flip kits, drop leaf springs, and other permanent modifications. Complete kit includes left and right shackles, polyurethane bushings for quiet operation, and all Grade 8 mounting hardware. Perfect for achieving a leveled stance or a subtle rear drop without cutting, welding, or compromising load capacity.
Key Features
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Bolt-On Installation: Direct replacement for factory rear shackles — no cutting, welding, or permanent modifications. Reversible at any time.
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Heavy-Duty Steel Construction: Thick-gauge steel shackles with a durable black powder coat finish resist rust, flex, and trail damage. Far stronger than stamped factory alternatives.
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Precision 1-2 Inch Drop: Engineered drop maintains correct pinion angle and driveline geometry. No vibration, no premature U-joint wear.
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Polyurethane Bushings: Quieter than metal-on-metal designs with better vibration isolation. Won't squeak, crack, or degrade like rubber bushings.
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Complete Kit: Left + right shackles, polyurethane bushings, and all Grade 8 hardware included — everything needed for a complete installation.
Vehicle Compatibility
| Year Range |
Make |
Model |
| 1988-1999 |
Chevy |
C1500 / K1500 (2WD / 4WD) |
| 1988-1999 |
Chevy |
C2500 / K2500 (2WD / 4WD) |
| 1988-1999 |
Chevy |
Suburban 1500 / 2500 |
| 1988-2004 |
Chevy |
S10 Blazer / S10 Pickup |
| 1988-1999 |
GMC |
C1500 / K1500 / C2500 / K2500 |
| 1988-1999 |
GMC |
Yukon / Suburban |
| 1999-2007 |
GMC |
Sierra 1500 Classic / Limited |
Specifications
| Specification |
Detail |
| Part Number |
410520 |
| Drop Amount |
1-2 Inches (Rear) |
| Material |
Heavy-Gauge Steel |
| Finish |
Black Powder Coat |
| Bushings |
Polyurethane |
| Hardware Included |
Grade 8 Bolts, Nuts, Washers |
| Installation Time |
1-2 Hours |
Installation Overview
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Skill Level: Intermediate — requires working under a supported vehicle
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Time: 1-2 hours with basic hand tools
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Tools Needed: Floor jack, jack stands (ALWAYS use jack stands — never jack-only support), socket set, torque wrench, penetrating oil for rusty bolts
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Alignment: Rear alignment impact is minimal on solid-axle applications. If front is also lowered, full 4-wheel alignment recommended
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Towing: Minimal impact on towing capacity at 1-2 inch drop. For frequent heavy towing, consider adding helper air bags
Why Choose iFJF?
iFJF lowering shackles are built from thicker steel than most competitors, with polyurethane bushings that outperform the rubber bushings found in budget kits. Every set is backed by US-based support and ships fast from our American warehouse. Get the stance you want without sacrificing ride quality or reliability.
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Frequently Asked Questions
Q: Will these fit my 1996 Chevy K1500?
A: Yes. These shackles fit 1988-1999 Chevy C/K 1500 and 2500 series pickups, as well as Suburban, Tahoe, and the 1999-2007 GMC Sierra Classic/Limited. Verify year/make/model in the compatibility table above.
Q: How much will these lower my truck?
A: Typically 1-2 inches depending on your specific application and existing suspension condition. Worn factory shackle bushings may yield slightly more drop when replaced.
Q: Are these a permanent modification?
A: No. These shackles bolt into factory locations. The installation is fully reversible — keep your original shackles if you ever want to return to stock height.
Q: Will towing be affected?
A: Minimal impact on towing capacity at 1-2 inches of drop. If you frequently tow heavy loads near your truck's maximum capacity, consider adding helper air bags to maintain ride height under load.
Q: Do I need new shocks?
A: Factory-length shocks work fine for 1-2 inch drops. If you're lowering more than 2 inches (combined with other modifications), drop shocks are recommended to prevent bottoming out.
Q: Will I need an alignment after installation?
A: The rear solid axle sees minimal alignment change from shackle replacement. A front-end alignment is recommended if you've also made front suspension changes.
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