At a Glance

> Measure First: Confirm the spring width and equalizer length before ordering.
> Check the Layout: Compare the front, center and rear hanger arrangement with the existing suspension.
> Plan the Installation: Confirm hanger placement and alignment before permanently mounting the components.
> Spring Check: Confirm that the trailer uses 2-inch-wide slipper springs.
> Equalizer Check: Compare the existing equalizer with the stated 12-inch × 3.78-inch dimensions.
Brand: R & P Carriages
SKU: BAK-1

Before You Order

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

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

Tandem-Axle Slipper-Spring Suspension

Tandem Axle 2" Slipper Hanger Kit with Greaseable Equalizer Bolts

A complete hanger and equalizer hardware kit for compatible tandem-axle trailer suspension systems using 2-inch-wide slipper springs and 12-inch equalizers.

SKU: BAK-1 For 2-Inch Slipper Springs Two 12-Inch Equalizers

Key Measurements & Specs

Specification	Detail
SKU	BAK-1
Product Type	Tandem-axle slipper hanger and equalizer kit
Spring Style	Slipper spring
Spring Width	2 inches
Equalizer Size	12 inches long × 3.78 inches wide
Quantity Included	One tandem-axle suspension kit

Fitment / Application

Category	Details
Trailer Configuration	Tandem axle
Suspension Type	Slipper-spring suspension
Primary Fit	Compatible systems using 2-inch-wide slipper springs and 12-inch equalizers
Fitment Method	Match the spring width, equalizer dimensions, hanger dimensions and mounting arrangement
Important Note	Verify all suspension measurements and hanger locations before ordering or installation.

Top Features

Feature	Buyer Benefit
Complete Hanger Set	Includes front, center and rear hangers for a tandem-axle installation.
Greaseable Bolts	Allows lubricant to be applied at the equalizer pivot points.
12-Inch Equalizers	Provides the specified equalizer size for matching slipper-spring systems.
Matched Hardware	Includes the listed equalizer and fastening hardware required by this kit.

Overview

The BAK-1 is a tandem-axle slipper-spring suspension kit assembled for compatible trailer applications using 2-inch-wide slipper springs. It combines front, center and rear hangers with two 12-inch equalizers, greaseable equalizer bolts and the corresponding fastening hardware in one coordinated kit.

R&P Service Insight

Slipper-spring suspension components must be matched by their measurements and mounting arrangement—not by appearance alone.

Measure First: Confirm the spring width and equalizer length before ordering.
Check the Layout: Compare the front, center and rear hanger arrangement with the existing suspension.
Plan the Installation: Confirm hanger placement and alignment before permanently mounting the components.

R&P Knowledge Hub

Compatibility: Intended for compatible tandem-axle trailer suspension systems using 2-inch-wide slipper springs and 12-inch equalizers.

System Fit: This kit supplies the hanger, equalizer and pivot hardware for a two-axle slipper-spring suspension arrangement.

Installation Notes: Verify the spring width, equalizer dimensions, hanger dimensions, axle spacing and mounting locations before beginning installation.

Performance Insight: Greaseable equalizer bolts provide an accessible lubrication point at the center equalizer pivots.

Brand & Fitment Note

Selling Brand: R&P Carriages

Kit Reference: BAK-1

What This Means: This listing is for one R&P Carriages tandem-axle slipper hanger and equalizer kit assembled from the listed suspension components.

Before Ordering: Match the spring width, equalizer size, hanger measurements and complete suspension arrangement with your trailer.

R&P Repair Insight

When replacing an existing hanger and equalizer system, inspect the surrounding suspension before installation. Worn springs, elongated mounting holes or an incorrect hanger layout can affect fit and suspension movement.

Spring Check: Confirm that the trailer uses 2-inch-wide slipper springs.
Equalizer Check: Compare the existing equalizer with the stated 12-inch × 3.78-inch dimensions.
Hanger Check: Verify the hanger heights, widths and placement against the trailer before mounting.

Features

Tandem-Axle Configuration

Provides matching suspension components for one compatible two-axle slipper-spring arrangement.

Greaseable Equalizer Pivots

Two 7/8-inch greaseable bolts provide lubrication access at the equalizer center pivots.

12-Inch Slipper Equalizers

Includes two equalizers measuring 12 inches long by 3.78 inches wide.

Coordinated Installation Hardware

Includes the bolts, lock nuts and cotter pins specified for this hanger and equalizer kit.

Included Components

Quantity	Included Item
2	Front slipper-spring hangers (H-4.375F)
2	Center slipper-spring hangers (H-4.5-SQ4)
2	Rear slipper-spring hangers (HG-15854-R)
2	12-inch × 3.78-inch slipper equalizers (EQ-12)
2	7/8-inch greaseable equalizer bolts (007-001-01)
2	7/8-inch lock nuts (006-111-00)
2	Cotter pins (165649)
8	9/16-inch × 3-1/2-inch suspension bolts (91635B)
8	9/16-inch lock nuts (SB-LN-9)

Important Fitment Note: Trailer suspension configurations can vary. Before ordering, verify the 2-inch spring width, 12-inch equalizer length, hanger measurements, mounting arrangement and axle spacing against your existing suspension or installation requirements.

Shop Trailer Suspension Parts

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Tandem Axle 2" Slipper Hanger Kit with Greaseable Equalizer Bolts (BAK-1)