Click here to ask a question

Tech Support Sales: (949) 629-3017 - Open M-F 9:00am to 5:00pm Pacific

Free shipping on most orders!

Rancho 2005-2010 Hummer H3 4" Suspension Lift # RS6558B

Rancho Part Number RS6558B. This Rancho Suspension 4" lift kit is designed to fit all 2005-2010 model year Hummer H3 SUV's and SUT's. Rancho's world-class technology allows H3 owners to rival the off-road prowess of Rancho-equipped H2 models. This evolutionary new suspension lift allows Hummer H3 owners to upgrade to a maximum 37-inch diameter tire. Among the many exclusive features is the state-of-the-art Rancho Realift torsion bar relocation technology, which eliminates the need to relocate the factory torsion bar cross member, doing away with the need to cut and weld. Rancho engineers also developed an ingenious two-piece cross member design that allows the installer to precisely relocate the differential - ensuring optimum suspension geometry and zero bump steer - without removing it from the vehicle. Ranchos ultra-precise packaging of the cross member maintains maximum ground clearance; when combined with Rancho/Realift technology, this design substantially improves Hummer H3 approach and departure angles. Also included in each kit is Ranchos Hummer-inspired skid plate armor to protect the front differential.
SKU: RS6558B
Sign up for price alert Sign up to get notified when this product is back in stock

Availability: Out of stock

Regular Price: $3,299.00

Sale Price $2,599.00

Rancho Suspension

Safe, Secure, Trusted Seller



Rancho RS6558B Kit Features:
Two-piece cross member for maximum ground clearance and ease of installation.
Hummer-inspired differential skid plate armor.
Front differential drop brackets correct pinion angle for minimized driveline vibration
Maintains factory location of rack & pinion.
Preserves OE geometry for easy alignment, zero bump steer, and optimal ride & handling.
High-clearance aft braces for added strength while maximizing ground clearance.
No drivetrain or exhaust modification.
Includes new rear low friction competition leaf spring packs.
Allows for use of up to 20" wheels.
Allows up to a 37" tall tire.
Rancho/Realift technology for no torsion bar relocation results in increased ground clearance.
The industrys highest quality design, CNC- machined, cast ductile iron steering knuckle.
Allows for reuse of the OE front skidplate.

As with every Rancho suspension, there are absolutely no compromises. In fact, our engineers maintained OE steering integrity - and eliminated time-consuming installation steps -- by preserving factory rack-and-pinion location. The system levels the rear to the new front height with premium Rancho low-friction competition leaf spring packs. The result is a true upgrade in handling, ride comfort and performance.

Important Information:
Installation of this system does not allow for re-use of OEM (factory) wheels. This Rancho Hummer H3 suspension lift kit was developed using a 325/60/R20 on 20x9 wheel with 5.0" inches of back-spacing. Use of the maximum tire size 37 x 12.50 will require some trimming of the front air dam/fascia & inner fender well for clearance. Rancho recommends using 4.5" of backspacing on 16", 17", and 18" wheels, wheels 20" in diameter and above can have up to 5.0 of back space. The dealer installed Under Body Protection Package cannot be reinstalled on vehicles equipped with a Rancho suspension lift system.

Shock absorbers are NOT included with this Rancho Lift Kit and are purchased separately using the selection box located above this item description. Rancho currently only offers one shock absorber for use with their H3 suspension lift, their premium brand Rancho RS9000XL 9-way adjustable. The Rancho RS6558B kit is only available in Rancho Outlaw Black!

This item ships for FREE via standard ground service to all addresses located within the 48 contiguous United States of America!

Additional Info

Additional Info

Free Shipping Free Ground Shipping!
Manufacturer Rancho Suspension
Part Number RS6558B
Vehicle Make Hummer
Vehicle Model Hummer - H3
Vehicle Year 2010, 2009, 2008, 2007, 2006, 2005
Drive Type 4-Wheel Drive
Made In the USA Yes
Installation Guide No
Current Rebates No


Write Your Own Review

Only registered users can write reviews. Please, log in or register