At a Glance
- SKU: 1449545 + 1449546 4 Lug
PRODUCT INFORMATION
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 |
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.
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.
Related Parts & Kits
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815-357-3292 · 270 E Jackson St · Seneca, IL 61360
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TRAILER PARTSGOOGLE
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RV KEYSGOOGLE
Found the correct RV keys at a good price with free shipping; the keys worked as expected.
AXLE & LEAF SPRINGSGOOGLE
Needed an unusual axle and leaf-spring size; the team listened and helped him sort out the fit.
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Praised the OEM and aftermarket selection, discounts, quick shipping, and friendly parts staff.
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Got the axle he needed right away, set up with a custom spring perch.
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Replacement struts brought a long-used door back to working order.
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