dreamdragon 7K Tandem Trailer Suspension Kit with 5 Leaf Springs

In this review the dreamdragon 7K Tandem Trailer Suspension Kit is evaluated as a heavy-duty, trailer-specific replacement suspension package designed for 7,000 lb axles. The bottom line: this kit is best for owners who need a complete swap or upgrade that includes 5-leaf springs rated at 3,500 lb each and the matching U-bolts, hangers and hardware for tandem axle trailers. It stands out because it bundles springs with axle U-bolts, greaseable bolts and comprehensive mounting hardware so a DIYer or a shop can complete a solid suspension overhaul without sourcing multiple parts.

Key Features

• 7,000 lb axle compatibility: Built to work with trailer axles in the 5,200-7,000 lb range so it fits common heavy trailer setups.
• 3,500 lb per spring capacity: Each 5-leaf spring is rated at 3,500 lb which provides the load handling needed for tandem axles when configured correctly.
• Complete U-bolt and tie plate set: Includes 4 x 7 in U-bolts, 2 tie plates and 8 hex nuts to fasten 3 in round axles securely to the spring assembly.
• Accessory kit included: Comes with hangers, shackle bolts, equalizer bolts, spring washers and nuts so installation requires minimal extra parts.
• Greaseable mounting bolts: 7/8 in-9 x 4.69 in bolts with grease zerks and 9/16 in-18 shackle bolts ensure easier maintenance and longer joint life.

Who It's For

This kit is aimed at trailer owners, small fleet operators and DIY mechanics who need a full tandem-axle leaf spring replacement rated for up to 7,000 lb axles. It is particularly useful for those rebuilding or upgrading suspension on utility, equipment or cargo trailers that use 3 in round axles and require matched U-bolts and tie plates.

It is not intended for use on motor vehicles or applications outside of trailers; buyers who need custom ground-ride adjustments, air suspension, or single-spring setups should look elsewhere. Also, if your axle diameter or spring dimensions differ from those listed you should confirm fitment before purchasing.

Pros & Cons

Pros

• Comprehensive kit includes springs, hangers, U-bolts, tie plates and hardware for a near-complete installation.
• Durable components with grease zerk-equipped bolts for easier maintenance and longer service life.
• Springs and hardware are sized for 3 in round axles and heavy-duty trailer loads up to the specified range.

Cons

• Designed only for trailers, so it is not suitable for non-trailer vehicle suspension projects.
• Fitment depends on matching the listed spring lengths and axle diameter; buyers must verify measurements.

Specifications

Our Verdict

The dreamdragon 7K Tandem Trailer Suspension Kit is a practical and well-rounded package for anyone rebuilding or upgrading trailer suspension on 7,000 lb tandem axles. It delivers solid value by combining rated 5-leaf springs with the matching U-bolts, tie plates and greaseable bolts, reducing the need to source separate parts. Buy this if you need a trailer-specific, heavy-duty replacement that keeps maintenance simple and offers dependable load capacity.

Frequently Asked Questions

Will these springs fit 3 in round axles?
Yes, the kit includes a U-bolt set sized for 3 in diameter round axles and 7 in long U-bolts.

Are the mounting bolts greaseable?
Yes, the kit supplies 7/8 in-9 x 4.69 in bolts with grease zerk fittings for easier maintenance.

Can these springs be used on motor vehicles?
No, these leaf springs are designed only for trailer applications and not for motor vehicle suspension.