Trailer Suspension / Tandem Axle Rebuild Kit
Suspension Trailer Rebuild Kit – Long 7-3/4" Equalizers – 3.125" Shackle Straps
Complete tandem axle suspension rebuild kit with long equalizers, standard shackle bolts, lock nuts, 3.125" shackle straps, and nylon bushings. Designed for trailer suspension service where the listed measurements match the existing setup.
Part Number: SRK-TA-SB-LE-3125 7-3/4" Long Equalizers 3.125" Shackle Straps
Key Measurements & Specs
| Specification |
Detail |
| Part Number / SKU |
SRK-TA-SB-LE-3125 |
| Brand |
R&P Carriages |
| Product Type |
Tandem axle trailer suspension rebuild kit |
| Equalizer Size |
7-3/4" long equalizers |
| Shackle Strap Size |
3.125" hole center to center |
| Quantity Included |
One complete 46-piece kit |
Fitment / Application
| Category |
Details |
| Trailer System |
Tandem axle leaf spring trailer suspension |
| Primary Fit |
Trailers requiring 7-3/4" long equalizers with 3.125" shackle straps |
| Fitment Method |
Verify equalizer length, shackle strap center-to-center length, bolt diameter, bushing size, and spring/hanger layout before ordering |
| Important Note |
This kit should be matched by measurement, not by appearance alone |
Top Features
| Feature |
Buyer Benefit |
| Complete Kit |
Includes equalizers, bolts, nuts, straps, and bushings for suspension service |
| Long Equalizers |
Built around 7-3/4" equalizers for matching compatible trailer suspension layouts |
| 3.125" Shackles |
Includes eight shackle straps with 3.125" hole center spacing |
| Nylon Bushings |
Includes eight replacement nylon bushings for suspension pivot points |
Overview
This R&P Carriages suspension rebuild kit is assembled for tandem axle trailer leaf spring suspension service using long 7-3/4" equalizers and 3.125" shackle straps. It includes the major replacement wear components commonly inspected during a suspension rebuild: equalizers, shackle bolts, lock nuts, shackle straps, and nylon bushings.
R&P Service Insight
Trailer suspension parts should be matched by measurement before ordering. Equalizer length, shackle strap length, bolt diameter, and bushing dimensions all matter for correct suspension geometry.
-
Measure First: Confirm that your existing equalizers measure 7-3/4" and your shackle straps measure 3.125" hole center to center.
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Inspect Wear Points: Look for ovaled strap holes, worn bushings, loose hardware, and uneven spring movement.
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Replace as a Set: Servicing the related suspension hardware together helps restore a more consistent pivot setup across the axle group.
R&P Knowledge Hub
Compatibility: Intended for compatible tandem axle trailer suspension setups using long 7-3/4" equalizers and 3.125" shackle straps.
Vehicle / System Fit: Trailer leaf spring suspension with matching equalizer, shackle strap, bolt, and bushing dimensions.
Installation Notes: Support the trailer safely, relieve suspension load before disassembly, and replace worn hardware only after confirming all measurements match.
Performance Insight: Worn shackles, bushings, and equalizer hardware can allow excess movement in the suspension, contributing to noise, uneven wear, and poor tracking.
Brand & Fitment Note
Selling Brand: R&P Carriages
Application Reference: This is a curated trailer suspension rebuild kit for compatible tandem axle leaf spring suspension applications where the listed measurements match.
What This Means: This listing is for an R&P Carriages suspension rebuild kit, not a guaranteed OEM-branded kit unless specifically stated and verified.
Before Ordering: Verify equalizer length, shackle strap length, hole size, bolt thread, bushing dimensions, axle layout, and suspension configuration before installation.
R&P Repair Insight
Suspension rebuild kits are measurement-critical. A small difference in shackle length or equalizer geometry can change ride height, spring angle, and axle movement.
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Equalizer Check: Match the 7-3/4" equalizer length to your existing suspension setup.
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Shackle Check: Confirm 3.125" hole center-to-center shackle strap spacing before ordering.
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Bushing Check: Confirm that 0.57" I.D., 0.69" O.D., 1.75" long nylon bushings match your application.
Features
Complete Tandem Axle Rebuild Package
Includes matched quantities of equalizers, shackle bolts, lock nuts, straps, and bushings for compatible tandem axle suspension service.
Long Equalizer Configuration
Built around two EQ-E1 long equalizers measuring 7-3/4" for trailer suspension layouts that use this size.
3.125" Shackle Straps
Includes eight shackle straps with 3.125" hole center-to-center spacing and 5/8" holes.
Replacement Nylon Bushings
Includes eight nylon bushings measuring 0.57" I.D., 0.69" O.D., and 1.75" long. Bushing color may vary.
Included Components
| Quantity |
Part Number |
Item Details |
| 2 |
EQ-E1 |
New Deal long equalizer, 7-3/4" |
| 14 |
9163B |
Shackle bolt, 9/16"-18 thread, 3" long, 3/4" thread length |
| 14 |
SB-LN-9 |
9/16"-18 nut |
| 8 |
SL-3.125 |
Shackle strap, 3.125" hole center to center, 5/8" holes, 4.132" x 1.25" x 0.23" overall dimensions |
| 8 |
8137 |
Nylon bushing, 0.57" I.D., 0.69" O.D., 1.75" long. Color may vary. |
Important Fitment Note: This suspension rebuild kit must be matched by measurement before ordering. Confirm your existing equalizer length, shackle strap center-to-center length, bolt diameter, bushing size, axle layout, and hanger configuration before installation.
R&P Carriages SRK-TA-SB-LE-3125 suspension rebuild kit, tandem axle suspension kit, long equalizer kit, 7-3/4 inch equalizer kit, 3.125 shackle strap kit, EQ-E1 equalizer, 9163B shackle bolt, SB-LN-9 nut, SL-3.125 shackle strap, 8137 nylon bushing, trailer leaf spring suspension rebuild kit, trailer shackle and equalizer kit.
