X4XZ Coil Spring Spacers 5" & 5.5" O.D. — 2PCS Heavy-Duty Rubber Boosters for Extra Lift and Load Support

X4XZ 2PCS Heavy-Duty Coil Spring Spacers are rubber boosters that fit 5" and 5.5" outer diameter coil springs to raise spring rate and support heavier loads.

These two rubber coil spring spacers are made to slide between existing coils and give your suspension extra lift and stiffness when you need it—whether towing, carrying cargo, or simply preventing sag. Built from tough rubber and engineered for universal fit on 5" and 5.5" O.D. springs, they’re a simple, reversible upgrade that reduces bottoming out and stabilizes handling without replacing springs.

How do these spacers improve ride height and stability?

By occupying space between coil turns, the X4XZ boosters increase the effective spring rate and keep the axle from compressing as far under load. That added stiffness translates to less sag, reduced nose-dive during braking, and improved resistance to bottom-out on rough roads.

• Raises rear or front ride height a modest, measurable amount under load.
• Increases spring resistance so heavy loads compress the suspension less.
• Reduces bump stops and harsh impacts when encountering potholes.

Are these spacers easy to install and remove?

Yes—installation is straightforward and reversible. You simply wedge each rubber booster between coils where clearance allows; no cutting or permanent modification is required.

• Tool-free installation in many vehicles—pry coil slightly and insert spacer.
• Can be removed anytime to restore original spring behavior.
• Compact design fits tight coil gaps on 5" and 5.5" O.D. springs.

What materials and durability can I expect from X4XZ spacers?

The spacers are molded from heavy-duty rubber chosen for compression resistance and longevity on road surfaces. They withstand repeated load cycles and typical environmental exposure without shredding or rapid deformation.

• Thick rubber compound resists cracking, tearing, and permanent set.
• Maintains performance across temperature changes and wet conditions.
• Designed for daily driving, towing, and light off-road use.

Will these fit my vehicle with 5" or 5.5" coil springs?

The X4XZ boosters are sized for universal fitment on coils with a 5" or 5.5" outer diameter, compatible with a broad range of cars, SUVs, trucks, and campers. Confirm your spring O.D. before purchase to ensure correct seating and maximum benefit.

• Fits most aftermarket and many OE coil springs measuring 5" or 5.5" O.D.
• Not recommended for coils with significantly different diameters or unique spring seats.
• Two-piece set covers left and right suspension sides for balanced support.

Who is this for: Drivers who carry frequent heavy loads, tow trailers, or want a low-cost way to reduce rear sag and improve stability will benefit from these spacers. Mechanics and DIY enthusiasts who prefer a reversible, no-cut solution to mildly stiffen suspension will also appreciate the universal sizing and simple installation. If you need major lift or full load-leveling, consider coil-over or air suspension upgrades instead; these rubber boosters are intended as an economical, intermediary enhancement for improved ride control and durability.