At a Glance
- SKU: CSRK-TA-WB-LE-BB-SW5
PRODUCT INFORMATION
Product Details
Tandem Axle Suspension Rebuild Kit
Complete Suspension Rebuild kit For 7K Tandem Trailer Axles 25" Springs Wet Bolts
Complete R&P Carriages custom suspension rebuild kit for 3.5K tandem trailer axle suspension setups, including leaf springs, hangers, equalizers, shackle straps, wet bolts, bronze bushings, U-bolts, nuts, and tie plates.
Part Number: CSRK-TA-WB-LE-BB-SW5 3.5K Tandem Axle Suspension Wet Bolt + Bronze Bushing Kit
Overview
This complete suspension rebuild package is assembled by R&P Carriages for tandem trailer axle suspension service. The kit is built around SW5 double-eye leaf springs, curved equalizers, hanger brackets, shackle straps, greaseable wet bolts, flange nuts, bronze bushings, round U-bolts, and tie plates. It is a strong choice when refreshing worn suspension pivot points, tired leaf springs, damaged shackles, or old equalizer hardware.
R&P Service Insight
Suspension rebuilds are best handled as a complete system when multiple wear points are already apart.
- Complete Refresh: Replaces springs, shackles, equalizers, bushings, bolts, hangers, U-bolts, and tie plates.
- Greaseable Hardware: Wet bolts and bronze bushings help improve serviceability at the suspension pivot points.
- Fitment Check: Always confirm spring length, hanger layout, equalizer dimensions, axle tube size, and bolt hole measurements before ordering.
R&P Knowledge Hub
Compatibility: Built for tandem trailer axle suspension rebuilds when the existing layout matches the listed spring, hanger, shackle, equalizer, U-bolt, and tie plate dimensions.
Vehicle / System Fit: Trailer tandem axle suspension systems using double-eye leaf springs and equalizer-style suspension.
Installation Notes: Hangers may require welding. Suspension geometry should be measured before removal so the axle spacing, hanger position, and equalizer location are maintained.
Performance Insight: New wet bolts and bronze bushings help reduce sloppy suspension movement caused by worn pivot hardware.
Brand & Fitment Note
Selling Brand: R&P Carriages Custom Kit
Application Reference: 3.5K tandem trailer axle suspension rebuild kit.
What This Means: This is an R&P-assembled package using the listed replacement suspension components for a full tandem axle suspension service.
Before Ordering: The supplied U-bolts are listed as 3" x 7" round U-bolts with matching tie plates. Confirm your axle tube diameter and existing suspension measurements before ordering.
R&P Repair Insight
A worn tandem suspension can create uneven tire wear, rough towing, loose tracking, clunking, or visible movement in the shackles and equalizers. Replacing the suspension as a system helps restore the connection points between the trailer frame, leaf springs, equalizers, and axles.
- Measure First: Confirm spring eye-to-eye length, spring width, equalizer spacing, shackle length, and hanger height.
- Inspect the Frame: Check hanger welds, frame condition, and axle alignment before installation.
- Torque & Grease: Follow proper torque procedures and grease all serviceable pivot points after assembly.
Features
Complete Tandem Suspension Package
Includes the listed leaf springs, hangers, equalizers, shackles, bolts, nuts, bushings, U-bolts, and tie plates for a full suspension rebuild.
SW5 Double-Eye Leaf Springs
Includes four 25.25" long, 1.75" wide, 5-leaf SW5 springs for the listed 3.5K tandem axle application.
Wet Bolt Upgrade Hardware
Greaseable wet bolts and bronze bushings help provide better long-term serviceability than standard dry pivot hardware.
R&P Custom-Assembled Kit
Packaged by R&P Carriages to simplify ordering for a complete tandem axle suspension rebuild.
Specifications
| Specification | Detail |
|---|---|
| Part Number | CSRK-TA-WB-LE-BB-SW5 |
| Listing SKU | CSRK-TA-WB-LE-BB-SW5 |
| Brand | R&P Carriages Custom Kit |
| Product Type | Complete Tandem Axle Suspension Rebuild Kit |
| Quantity Included | 90 listed components |
| Application | 3.5K tandem trailer axle suspension rebuild |
| Material / Finish | Mixed suspension hardware; bronze bushings included. Finish may vary by component. |
| Key Measurement | 25.25" double-eye springs, 7.75" equalizers, 2.562" shackle straps, 3" round U-bolts. |
Fitment / Application
| Category | Details |
|---|---|
| Vehicle / System | Tandem trailer leaf spring suspension |
| Primary Fit | 3.5K tandem axle suspension setups with matching dimensions. |
| Secondary Fit / Common Uses | Utility trailers, equipment trailers, landscape trailers, and other tandem axle trailers using compatible double-eye suspension geometry. |
| Notes | Verify spring length, spring width, equalizer spacing, shackle length, hanger height, bolt diameter, and axle tube size before ordering. |
Detailed Measurements
| Component | Measurement / Detail |
|---|---|
| SW5 Leaf Spring | Double eye, 25.25" long, 5-leaf, 1.75" wide, 3,500 lb application reference. |
| H-3.875 Hanger | 3.25" bolt height, 3.875" overall height, 0.56" round holes. |
| EQ-E1 Curved Equalizer | 7.75" bottom hole to bottom hole center-to-center; 2.88" top hole to bottom hole center-to-center. |
| SL-2.562 Shackle Strap | 2.562" hole center; 3.75" x 1.25" x .23" strap size. |
| FA-7-187 Equalizer / Shackle Bolt | Hex head, 0.56" x 3", wet bolt, greaseable, step-down end 0.44". |
| FA-6-92Z Flange Nut | 7/16" flange nut for greaseable shackle bolts. |
| BU1-1566B Bronze Bushing | 0.57" x 0.69" x 1.75" bronze spring eye / equalizer bushing. |
| UB-R302 U-Bolt | Round U-bolt, 3" x 7" x 1/2"-20; listed fit reference 6000 lb / 7000 lb. |
| 12N U-Bolt Nut | 1/2"-20 U-bolt nut. |
| TP-4 U-Bolt Tie Plate | 3" center-to-center U-bolt holes; listed fit reference 5200 lb / 6000 lb / 7000 lb. |
Included Components
| Quantity | Part Number | Item Included |
|---|---|---|
| 4 | SW5 | Double-eye leaf spring, 25.25" long, 5-leaf, 1.75" wide. |
| 6 | H-3.875 | Hanger, 3.25" bolt height, 3.875" overall, 0.56" round holes. |
| 2 | EQ-E1 | Curved equalizer, 7.75" bottom hole to bottom hole center-to-center. |
| 8 | SL-2.562 | Shackle strap, 2.562" hole center, 3.75" x 1.25" x .23". |
| 14 | FA-7-187 | Greaseable wet equalizer / shackle bolt, hex head, 0.56" x 3". |
| 14 | FA-6-92Z | 7/16" flange nut for greaseable shackle bolts. |
| 14 | BU1-1566B | Bronze spring eye / equalizer bushing, 0.57" x 0.69" x 1.75". |
| 8 | UB-R302 | Round U-bolt, 3" x 7" x 1/2"-20. |
| 16 | 12N | 1/2"-20 U-bolt nut. |
| 4 | TP-4 | U-bolt tie plate with 3" center-to-center U-bolt holes. |
Verify all suspension measurements before installation, including spring eye-to-eye length, spring width, equalizer spacing, shackle length, hanger height, bolt diameter, axle tube size, U-bolt size, and tie plate dimensions. Hangers may require welding, and suspension geometry should be measured before removal so axle spacing and alignment are maintained.
CSRK-TA-WB-LE-BB-SW5 suspension rebuild kit, 3.5K tandem axle suspension kit, tandem trailer leaf spring rebuild kit, wet bolt bronze bushing trailer suspension kit, SW5 leaf spring kit, tandem axle equalizer shackle hanger kit, R&P Carriages custom suspension kit, trailer suspension rebuild parts, 25.25 inch double eye leaf spring kit, 7.75 inch equalizer trailer kit, 2.562 shackle strap kit, 3 inch round U bolt suspension kit
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