RPG 12,000 lb Square Trailer Jack - Sidewind Weld-On Drop Leg with Spring Return

Name: RPG 12,000 lb Square Trailer Jack - Sidewind Weld-On Drop Leg with Spring Return
Brand: RunningGearParts.com
SKU: JC-SWD-12000-2578-M
Price: 213.49 USD
Availability: InStock

$213.49 USD

Shipping calculated at checkout.

Care information

To ensure optimal performance and extend the service life of your new trailer components, please follow these care guidelines after purchase:

Before installation, check all parts for shipping damage or missing components. Do not install damaged parts.
Always use correct tools and torque settings. Improper installation can lead to premature wear or failure.
For bearings, suspensions, and brake components, apply high-quality trailer grease before first use if not pre-greased.
Some parts (like brake assemblies) require a short break-in period to achieve full performance. Follow manufacturer instructions for best results.
Recheck fasteners, grease levels, and moving components after 100 miles of towing, then at regular intervals.
After exposure to water, road salt, or mud, clean and dry parts thoroughly. Apply anti-rust treatment if needed.
If storing unused parts, keep them in a dry, sealed container away from moisture and direct sunlight.

Delivery and Shipping

Handling Time: Orders ship out within 1 business day after payment is received.

Shipping Methods: We use trusted carriers like UPS, FedEx, or USPS based on package size and destination.

Delivery Time: Estimated delivery within 2–6 business days (U.S. domestic orders).

Tracking: A tracking number will be provided once your order is dispatched.

Q1 Will this brake fit my trailer?

This brake assembly fits most standard 7,000 lb trailer axles that use 12" × 2" electric brakes with a 5-bolt mounting flange. Please verify your axle rating and brake dimensions before ordering. If you're unsure, send us your axle tag or hub information and we'll help confirm compatibility.

Q2 Does it fit Dexter or Lippert axles?

Yes. It is compatible with many standard Dexter, Lippert, Rockwell American, AL-KO, and other 7,000 lb trailer axles that use a standard 12" × 2" brake assembly. Always verify your axle specifications before purchasing.

Q3 Is this a self-adjusting brake?

Yes. This is a self-adjusting electric brake assembly, which automatically maintains proper brake shoe clearance during normal operation. This reduces maintenance and helps provide consistent braking performance.

Specifications:

Brand: RPG
Support Capacity (Static): 12,000 lbs
Lift Capacity (Dynamic): 10,000 lbs
Jack Travel: 12-1/2"
Drop Leg Travel: 13-3/4" (Spring-loaded)
Total Lift (Combined): 26-1/4"
Jack Height (Retracted): 28-1/2"
Jack Height (Extended): 41"
Square Tube Diameters: Outer 4" / Inner 3-9/16"
Foot Dimensions: 9" L x 8" W
Operation: Sidewind (Side-cranking)
Pin Mechanism: Front-facing pull-pin plunger
Mounting Style: Weld-on
Material & Finish: Heavy-duty steel with durable black coating

What's Included by Kit Option:

Single Piece:

1 x RPG 12K Square Sidewind Trailer Jack with Integrated 9" x 8" Base Foot

(Please Note: Crank handle, handle clip are not included).

Product Overview:

This Trailer Jack is designed to handle heavy commercial tongue loads while streamlining your setup. The built-in spring-loaded drop leg automatically snaps back into place when you pull the front plunger pin, saving you the hassle of manually adjusting and lifting dirty, heavy inner tubes.

Inside, heavy-duty steel gears paired with an extra-large octagonal shaft bushing deliver silky-smooth lifting power, even under full loads. The thick, welded-on 9" x 8" steel footplate prevents your trailer from sinking or tipping in soft soil or gravel, while an integrated grease zerk fittings make routine maintenance clean and simple.

Payment & Security

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