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Suspension and Components› Suspension Kits

DJM

6-Inch Rear Lowering Kit

$389.07 $259.38 Save $129.69

SKU: FK2599-6

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The DJM Suspension 6" Rear Lowering Kit is engineered for 1999-2006 Chevy Silverado and GMC Sierra trucks, including 2007 Classic models. This kit delivers a true 6" drop with an axle flip design, frame reinforcement, and geometry correction. It includes heavy-duty flip kit brackets with adjustable pinion angle for proper driveline alignment and C-notch brackets for axle clearance.
Show original supplier description
The DJM Suspension FK2599-6 is a 6" rear lowering kit designed for the 1999-2006 Chevy Silverado and GMC Sierra, including 2007 Classic models. This comprehensive rear axle flip system provides a significant drop while incorporating essential components for maintaining proper geometry and suspension function. This kit features heavy-duty flip kit brackets that offer fully adjustable pinion angle, crucial for correcting driveline alignment after lowering the vehicle. To ensure adequate suspension travel and clearance, C-notch brackets are included, providing necessary room for the axle. The package also contains new U-bolts and spring plates, bump stops, and all the necessary installation hardware. Notably, a shock extender is provided for the passenger side only, accommodating the factory's staggered shock mounting configuration. It is important to note that shocks are not included with this kit; DJM recommends their Driver Side Shock 1800 and Passenger Side Shock 1900. The kit is designed to provide a true 6" rear drop and includes components such as flip brackets with adjustable pinion angle, C-notch brackets, new U-bolts and spring plates, bump stops, and a passenger side shock extender. All required hardware for installation is supplied, making it a complete solution for lowering the rear of your truck.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandDJM
Part NumberFK2599-6
CategorySuspension and Components
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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