Dexter 3500 lb idler trailer axle running gear kit with wheels, radial tires, leaf springs, U-bolt kit, and hanger kit for single axle trailers
Dexter 3500 lb idler trailer axle running gear kit with wheels, radial tires, leaf springs, U-bolt kit, and hanger kit for single axle trailers
Dexter 3500 lb idler trailer axle build kit with leaf springs, U-bolt kit, and hanger kit for single axle trailer applications
Dexter 3500 lb idler trailer axle kit with leaf springs and U-bolt kit
Dexter 3500 lb idler trailer axle with 5 lug hubs and E-Z Lube spindles for utility, cargo, landscape, and equipment trailers
Dexter premium warranty and E-Z Lube trailer axle features graphic
Common trailer axle sizes chart showing hub face and spring center measurements
5 lug trailer axle bolt pattern chart
Trailer hanger placement diagram for double eye leaf springs
Dexter E-Z Lube trailer axle spindle maintenance graphic
Dexter E-Z Lube spindle diagram for trailer axle bearing lubrication
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Dexter 3,500 lb Idler Trailer Axle Kits

Build, repair, or upgrade your trailer with genuine Dexter 3,500 lb idler trailer axle kits engineered for utility, cargo, landscape, boat, and equipment trailer applications. Available in Axle Only, Suspension Kit, Build Kit, and Running Gear Kit configurations with multiple hub face and spring center sizes to match your trailer setup.

Features include Dexter E-Z Lube spindles, a durable cambered axle tube, double-eye leaf springs on applicable kit levels, and optional 15″ wheels with ST205/75R15 radial trailer tires. Designed for dependable towing performance, simplified maintenance, and long-term durability.

Free shipping in the lower 48 states.

Price range: $325.00 through $765.00

Dexter 3,500 lb Idler Trailer Axle Kits

Build, repair, or upgrade your trailer with genuine Dexter 3,500 lb idler trailer axle kits engineered for utility trailers, cargo trailers, landscape trailers, boat trailers, and other light-duty single-axle trailer applications.

These Dexter trailer axle packages are available in multiple hub face and spring center sizes and are offered in four configuration levels ranging from a simple axle-only replacement to complete running gear systems with wheels and ST205/75R15 radial trailer tires.

Choose from axle-only, suspension, build, and running gear configurations depending on your trailer build requirements and included component needs.

All configurations feature genuine Dexter axle components with E-Z Lube greaseable spindles, cambered axle tubes, and durable powder-coated construction designed for dependable towing performance and long-term trailer reliability.

Dexter trailer axles are trusted throughout the trailer industry for their consistent manufacturing quality, smooth towing characteristics, and dependable service life.

Free shipping in the lower 48 states.

Compare Kit Options

Select the trailer axle package that best matches your trailer repair, replacement, or new trailer build requirements.

← Swipe left/right to compare all kit options →

Included Components Axle Only Suspension Kit Build Kit Running Gear Kit
Dexter 3,500 lb Idler Axle ✓ ✓ ✓ ✓
Double-Eye Leaf Springs — ✓ ✓ ✓
U-Bolt Kit — ✓ ✓ ✓
Single-Axle Hanger Kit — — ✓ ✓
15″ 5-Lug Wheels — — — ✓
ST205/75R15 Radial Trailer Tires — — — ✓

Axle Only: Includes a genuine Dexter 3,500 lb idler trailer axle with pre-installed idler hubs and Dexter E-Z Lube spindles. Ideal for replacing an existing axle while reusing your current suspension components.

Suspension Kit: Includes the Dexter idler axle, double-eye leaf springs, and U-bolt kit for replacing worn suspension components on a single-axle trailer.

Build Kit: Complete single-axle suspension package including the Dexter axle, leaf springs, U-bolt kit, and single-axle hanger kit for new trailer builds or complete suspension replacements.

Running Gear Kit: Complete running gear package including the Dexter idler axle, leaf springs, U-bolt kit, hanger kit, wheels, and ST205/75R15 radial trailer tires for a near bolt-on trailer axle solution.

Build Kit and Running Gear Kit configurations are commonly selected for complete trailer builds and major trailer rebuilds, while Axle Only and Suspension Kit options are popular for repairs and partial upgrades.

Choose Your Axle Size (Hub Face / Spring Center)

Select the hub face (HF) and spring center (SC) measurements that match your trailer frame and suspension setup for proper alignment, tire clearance, and safe towing performance.

Hub face and spring center measurement diagram for trailer axle sizing

  • Hub Face (HF): Measured from the outer face of one hub to the outer face of the opposite hub
  • Spring Center (SC): Measured from the center of one spring seat to the center of the opposite spring seat

Matching the correct hub face and spring center measurements helps ensure proper fender clearance, suspension alignment, wheel positioning, and overall trailer fitment.

Not sure which axle size you need? Read our How to Measure a Trailer Axle guide or contact us and we’ll help verify your measurements before you order.

Key Features

  • Genuine Dexter Quality: Authentic Dexter trailer axle components engineered for dependable towing performance and long-term durability.
  • 3,500 lb Capacity: Designed for utility trailers, cargo trailers, landscape trailers, boat trailers, and other light-duty single-axle applications.
  • Idler Axle Configuration: No brakes installed. Pre-welded 4-bolt brake flanges allow compatible electric trailer brakes to be added later if desired.
  • Dexter E-Z Lube Spindles: Built-in grease zerks allow quick bearing lubrication without removing the hubs.
  • Durable Powder-Coated Finish: Helps resist corrosion from road debris, weather, and moisture exposure.
  • Cambered Axle Beam: Designed to improve tire wear, towing stability, and tracking performance under load.

Fitment Notes

These Dexter 3,500 lb idler trailer axle kits fit many common single-axle trailer applications including utility trailers, cargo trailers, landscape trailers, boat trailers, and equipment trailers.

Always verify your trailer’s overall GVWR, wheel ratings, tire ratings, and suspension capacity before loading.

Be sure to verify your hub face measurement, spring center measurement, bolt pattern, wheel and tire specifications, and included components before ordering since exact specifications vary by selected configuration.

Frequently Asked Questions

What is the difference between the kit options?

The Axle Only option includes just the Dexter idler axle. The Suspension Kit adds leaf springs and U-bolts. The Build Kit also includes a single-axle hanger kit, while the Running Gear Kit includes wheels and ST205/75R15 radial trailer tires for a more complete trailer setup.

How do I measure my trailer axle?

The two main measurements are Hub Face (HF) and Spring Center (SC). Hub Face is measured from the outer face of one hub to the other, while Spring Center is measured from the center of one spring seat to the other. You can also read our How to Measure a Trailer Axle guide for more help.

Can brakes be added to this idler axle later?

Yes. These Dexter idler axles include pre-welded 4-bolt brake flanges, allowing compatible electric trailer brakes to be added later if desired.

What are Dexter E-Z Lube spindles?

Dexter E-Z Lube spindles include built-in grease zerks that allow grease to flow through the spindle into the hub assembly, making bearing lubrication easier during routine maintenance.

What trailers are these axle kits commonly used on?

These 3,500 lb idler trailer axle kits are commonly used on utility trailers, cargo trailers, landscape trailers, boat trailers, and other light-duty single-axle trailer applications.

Helpful Resources

Installation Video

Watch our video for trailer axle tips, measurements, installation guidance, and trailer suspension setup information.

Questions?

Need help choosing the right axle size or trailer axle kit configuration? We can help confirm your measurements and fitment before you order.


Call (602) 292-9690,
email sales@johnsontrailerparts.com,
or contact us through our website.

SKU: DEX-3500-IDLER-KIT-HANGER-WT Categories: , , Tags: , , , , , , , , , , , , , , , Brand:

Verify your trailer axle specifications below to help ensure proper fitment, bearing compatibility, suspension alignment, and towing performance.

Brand Dexter
Axle Capacity 3,500 lbs GAWR
Axle Type Idler axle (no brakes)
Brake Flanges Pre-welded 4-bolt brake flanges
Available Configurations Axle Only, Suspension Kit, Build Kit, or Running Gear Kit
Bolt Pattern Options 5 on 4.5″ or 5 on 5″ depending on selected option
Lubrication System Dexter E-Z Lube greaseable spindles
Spindle Type Straight #84 spindles
Axle Beam 2-3/8″ OD round cambered axle tube
Leaf Springs Double-eye 4-leaf trailer springs, 25.25″ eye-to-eye
Spring Pads Underslung, pre-welded spring seats
Hub Face (HF) Varies by selected option
Spring Center (SC) Varies by selected option
Wheel & Tire Package Included on Running Gear Kit configurations
Wheel Size 15″ 5-lug trailer wheels
Tire Size ST205/75R15
Tire Type Radial trailer tires
Inner Bearing L68149
Outer Bearing L44649
Inner Race L68111
Outer Race L44610
Grease Seal 10-19 double-lip grease seal
Country of Origin Made in America
Warranty Limited 5 Year Warranty

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