At a Glance
- > Length: 26.25" long
- > Width: 1.75" wide
- > Capacity: 2,350 lb each
- > Design: 4-leaf open end slipper spring
- > Spring Style: Open end slipper spring with a 4-leaf construction.
- Brand: TRP
- SKU: C-4
Before You Order
Match the part number, measurements and connection points that apply to your trailer.
Fitment Check
| Hub Face | Measure hub face to hub face. |
|---|---|
| Spring Center | Measure mounting centers and confirm perch configuration. |
| Capacity | Match the required axle rating. |
| Brakes | Confirm brake type and flange configuration. |
Product Details
Trailer Suspension / Open End Slipper Leaf Spring
4-Leaf Open End Slipper Trailer Leaf Spring SO-C4 / C-4 26.25" Long 2,350 lb Capacity
Replacement 4-leaf open end slipper spring for trailer suspension applications matching the listed SO-C4 / C-4 dimensions, capacity, and bushing requirements. Cross-reference friendly for UNA-264 and C-4 style spring replacements.
Part Number: SO-C4 Cross Ref: UNA-264 / C-4 26.25" Long / 2,350 lb Each
Replace the spring, restore the stance, and match the suspension the right way. Open End Slipper Spring · 4 Leaf · 26.25"
Built for a Specific Suspension Match
This is the spring to use when your trailer calls for an open end slipper setup with the listed length, width, capacity, and bushing requirements.
- Length: 26.25" long
- Width: 1.75" wide
- Capacity: 2,350 lb each
- Design: 4-leaf open end slipper spring
Overview
This SO-C4 open end slipper leaf spring is built for trailer suspension setups that require a 4-leaf spring measuring 26.25" long and 1.75" wide. It is rated at 2,350 lb capacity each and includes nylon bushings for applications using a 9/16" shackle bolt. Use the listed dimensions and cross-reference numbers to confirm the correct match before ordering.
R&P Service Insight
Trailer leaf springs are fitment-critical parts. The best match comes from confirming the spring style, length, width, bolt size, and capacity against the spring being replaced.
- Spring Style: Open end slipper spring with a 4-leaf construction.
- Bolt Fit: Nylon bushings are included and the spring will accept a 9/16" shackle bolt.
- Capacity Match: Rated at 2,350 lb each; confirm your trailer suspension requirements before installation.
R&P Knowledge Hub
Compatibility: For trailer suspension applications requiring a 4-leaf open end slipper spring with SO-C4 / C-4 dimensions and 2,350 lb capacity.
Vehicle / System Fit: Trailer leaf spring suspension systems using an open end slipper spring layout.
Installation Notes: Verify 26.25" length, 1.75" width, 9/16" shackle bolt compatibility, spring capacity, hanger layout, and open-end orientation before installation.
Performance Insight: Correct spring sizing helps maintain proper suspension travel, trailer ride height, and load support. A spring with the wrong length, width, or capacity may not seat or perform correctly.
Brand & Fitment Note
Selling Brand: TruRyde
Cross-Reference Numbers: SO-C4, UNA-264, and C-4 are included to help compare this spring against existing part numbers and catalog references.
What This Means: Cross-reference numbers are provided for identification and fitment comparison only. Always verify measurements, spring style, bushing requirements, and capacity before purchase.
Before Ordering: Confirm your existing spring length, width, open end layout, shackle bolt size, suspension capacity, and included components.
R&P Repair Insight
A worn or mismatched slipper spring can affect trailer height, axle alignment, and suspension movement. When replacing one spring, inspect the surrounding hardware and compare both sides of the trailer for even wear.
- Measure the Spring: Match the 26.25" length and 1.75" width to the spring or suspension requirements.
- Check the Bolt Size: Confirm your setup uses a 9/16" shackle bolt before installing.
- Inspect Related Hardware: Review hangers, bolts, bushings, U-bolts, axle seats, and equalizer components before reassembly.
Features
4-Leaf Slipper Spring
Built as a 4-leaf spring for compatible trailer suspension applications.
Open End Design
Designed for suspension setups using an open end slipper spring configuration.
Nylon Bushings Included
Includes nylon bushings and will accept a 9/16" shackle bolt.
Cross-Reference Ready
Listed under SO-C4 with cross references for UNA-264 and C-4 to support part number comparison.
Specifications
| Specification | Detail |
|---|---|
| Part Number | SO-C4 |
| Brand | TruRyde |
| Product Type | Open end slipper trailer leaf spring |
| Application | Trailer suspension |
| Leaf Count | 4 leaf |
| Length | 26.25" |
| Width | 1.75" |
| Capacity | 2,350 lb each |
| Bushing | Nylon bushings included |
| Shackle Bolt Compatibility | Accepts 9/16" shackle bolt |
| Reference Numbers | UNA-264, C-4 |
| Material / Finish | Not specified |
Fitment / Application
| Category | Details |
|---|---|
| Vehicle / System | Trailer leaf spring suspension |
| Primary Fit | Applications requiring a SO-C4 / C-4 open end slipper leaf spring |
| Secondary Fit | Trailer suspension setups matching the listed length, width, leaf count, capacity, and 9/16" shackle bolt requirement |
| Notes | Verify your existing spring dimensions, open end layout, hanger setup, shackle bolt size, and suspension capacity before ordering. |
Included Components
| Quantity | Item |
|---|---|
| 1 | SO-C4 4-leaf open end slipper trailer leaf spring |
| Included | Nylon bushings |
| Not specified | Mounting hardware, U-bolts, shackle bolts, hangers, and related suspension hardware |
In-situ installation reference showing the open end slipper leaf spring positioned on a trailer suspension. Use this as a visual orientation guide and always verify your hanger layout, spring length, bolt size, and axle setup before installation.
Verify all measurements, spring style, open-end orientation, shackle bolt size, hanger layout, suspension capacity, and included components before installation. Cross-reference numbers are provided to help compare applications, but final fitment depends on your trailer’s measured suspension requirements.
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