At a Glance

> Orientation: Includes both Left and Right side assemblies for proper trailing arm geometry.
> Serviceability: Uses standard 1" trailer bearings, making future maintenance simple and cost-effective.
> Hardware: Includes necessary lug nuts to match the integrated 4-lug hubs.
> Mounting: Verify your frame can accommodate the 4" x 4" mount plate with 3/8" holes.
> Seals: Ensure your replacement grease seals match the 1-1/4" specification for this hub.
Brand: Dexter
SKU: 1449545 + 1449546 4 Lug

Before You Order

Match the part number, measurements and connection points that apply to your trailer.

Bearings	Match inner and outer bearing numbers.
Seal	Match the seal number or dimensions.
Bolt Pattern	Verify the complete lug pattern.
Brake Size	Confirm when applicable.

Product Details

TRAILER RUNNING GEAR / SUSPENSION SYSTEM

Pair of 250 lb Rubber Torsion Trailer Axles – 4 on 4 Hub – Left & Right Set

High-performance rubber torsion axles designed for lightweight cargo and motorcycle pull-behind trailers, providing integrated suspension and smooth ride characteristics.

SKU: 1449545 + 1449546 500 lb Per Pair 4 on 4" Bolt Pattern

Overview

This R&P Carriages torsion axle set is a premium suspension solution for small-format trailers. Featuring a compact rubber-cord design, these axles eliminate the need for traditional leaf springs and shackles, significantly reducing maintenance points and road noise. This set is engineered for lightweight applications like motorcycle trailers where ride quality and stability are critical.

R&P Service Insight

This design provides superior damping compared to leaf springs for light loads, preventing "trailer bounce" during transport.

Orientation: Includes both Left and Right side assemblies for proper trailing arm geometry.
Serviceability: Uses standard 1" trailer bearings, making future maintenance simple and cost-effective.
Hardware: Includes necessary lug nuts to match the integrated 4-lug hubs.

R&P Knowledge Hub

Compatibility: Designed for trailers utilizing a 4 on 4" wheel bolt pattern and 1" ID bearings.

System Fit: Ideal for lightweight cargo trailers, motorcycle pull-alongs, and custom small-frame builds.

Installation Notes: Rubber torsion axles use internal cords to provide damping. Ensure mounting plate spacing and arm start angles are verified against your frame before welding or bolting.

Performance Insight: The rubber torsion design isolates road shock, providing a much smoother ride for sensitive cargo compared to rigid or sprung axles.

Brand & Fitment Note

Selling Brand: R&P Carriages

Application Reference: OEM names or trailer types are used for application reference only based on standard sizing and capacity requirements.

What This Means: This is a curated R&P Carriages assembly set designed to meet standard lightweight trailer specifications.

Before Ordering: Please verify your mounting plate hole spacing (3" center-to-center) and lug pattern requirements to ensure a proper fit.

R&P Repair Insight

When upgrading from a standard straight axle to torsion axles, pay close attention to the ride height and mounting alignment.

Mounting: Verify your frame can accommodate the 4" x 4" mount plate with 3/8" holes.
Seals: Ensure your replacement grease seals match the 1-1/4" specification for this hub.
Capacity: Do not exceed the 500 lb combined capacity to maintain optimal suspension travel.

Features

Torsion Suspension

Internal rubber cords absorb road impacts, eliminating the need for leaf springs.

Integrated 4-Lug Hubs

Standard 4 on 4" bolt pattern compatible with common small trailer wheels.

Standard Bearings

Equipped with industry-standard 1" ID bearings for easy replacement and service.

Complete Pair

Includes both the Left and Right axle assemblies to ensure balanced performance.

Specifications

Specification	Detail
Part Number	1449545 + 1449546
Brand	R&P Carriages
Capacity	500 lb per pair (250 lb ea)
Bolt Pattern	4 on 4"
Bearing Size	1" ID
Overall Length	14-1/2"
Mount Plate	4" x 4" (3" spacing)

Fitment / Application

Category	Details
Trailer Type	Small Pull-Behind / Cargo
Specialty	Motorcycle Trailers
Hub Type	Idler Hub (Non-Braking)
Notes	Verify mounting plate hole size (3/8") before installation.

Included Components

Quantity	Item
1	Left Hand Torsion Axle Assembly
1	Right Hand Torsion Axle Assembly
2	Integrated 4-Lug Hubs (Installed)
1 Set	Standard 1" Bearings & 1-1/4" Seals
Included	Lug Nuts

Pair of 250 lb torsion axles installed example

Verify all measurements, including the 4 on 4" bolt pattern and 3" center-to-center mounting plate hole spacing, before ordering. Proper installation is critical for the safety and longevity of the torsion suspension system.

View All Trailer Torsion Axles

250lb trailer axle, 500lb pair torsion axle, rubber torsion suspension, motorcycle trailer axle, 4 on 4 lug hub, small cargo trailer axle, trailer running gear, half axles.

Pair of 250 lb Rubber Torsion Trailer Axles – 4 on 4 Hub – Left & Right Set (1449545 + 1449546 4 Lug)