Shop Rockwell American trailer axles and parts at Johnson Trailer Parts. Rockwell American is a leading US manufacturer of trailer axles, leaf springs, and suspension components, known for their Posi-Lube spindle system and superior powder coat finish. We carry Rockwell American electric brake axles, idler axles, and complete axle kits with free shipping on qualifying orders in the lower 48 states.
Rockwell American
Showing all 15 results
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3,500 lb Axles, Rockwell American Axles, Trailer Axles
Rockwell American 3,500 lb Electric Brake Trailer Axle Kits
3,500 lb Axles, Rockwell American Axles, Trailer AxlesRockwell American 3,500 lb Electric Brake Trailer Axle Kits
Build, repair, or upgrade your trailer with genuine Rockwell American 3,500 lb Electric Brake Trailer Axle Kits designed for utility, cargo, landscape, enclosed, boat, ATV, UTV, and light equipment trailer applications. Available in Axle Only, Suspension Kit, Build Kit, and Running Gear Kit configurations with multiple hub face, spring center, and bolt pattern options to match your trailer.
Features include 10″ x 2-1/4″ electric brake assemblies, Posi-Lube® greaseable spindles, a durable cambered axle beam, double-eye leaf springs on applicable kit levels, and optional 15″ wheels with ST205/75R15 radial trailer tires. Built for dependable braking performance, simplified maintenance, and long-term towing reliability.
Free shipping in the lower 48 states.
SKU: RA35-SBA-KITS -
3,500 lb Axles, Rockwell American Axles, Trailer Axles
Rockwell American 3,500 lb Idler Trailer Axle Kits
3,500 lb Axles, Rockwell American Axles, Trailer AxlesRockwell American 3,500 lb Idler Trailer Axle Kits
Rockwell American 3,500 lb Idler Trailer Axle Kits are available in Axle Only, Suspension Kit, Build Kit, and Running Gear Kit configurations for trailer repair, replacement, or new construction. Select the correct hub face and spring center (HF/SC), 5 on 4.5″ or 5 on 5″ bolt pattern, and complete your project with optional suspension components, hanger kit, and 15″ wheels with ST205/75R15 radial trailer tires. Designed for utility, cargo, landscape, boat, ATV, and light equipment trailers.
Free Shipping in the Lower 48 states.
SKU: RA35-SIA -
5,200 lb Axles, Rockwell American Axles, Trailer Axles
Rockwell American 5,200 lb Electric Brake Trailer Axle Kits
5,200 lb Axles, Rockwell American Axles, Trailer AxlesRockwell American 5,200 lb Electric Brake Trailer Axle Kits
Rockwell American 5,200 lb Electric Brake Trailer Axle Kits are available in Axle Only, Suspension Kit, Build Kit, and Running Gear Kit configurations to fit a wide range of trailer repair, replacement, and new trailer build applications.
Choose from multiple hub face (HF) and spring center (SC) sizes to match your trailer. Features include 12″ × 2″ electric brakes, Posi-Lube® greaseable spindles, 3″ cambered axle tube, and optional 15″ 6-lug wheels with ST225/75R15 radial trailer tires.
Free Shipping in the Lower 48 States.
SKU: R52-SBA-KITS -
7,000 lb Axles, Rockwell American Axles, Trailer Axles
Rockwell American 7,000 lb Electric Brake Trailer Axle Kits
7,000 lb Axles, Rockwell American Axles, Trailer AxlesRockwell American 7,000 lb Electric Brake Trailer Axle Kits
Rockwell American 7,000 lb Electric Brake Trailer Axle Kits are available in Axle Only, Suspension Kit, Build Kit, and Running Gear Kit configurations for heavy-duty trailer repairs, replacements, and new trailer builds. Choose from multiple hub face (HF) and spring center (SC) sizes to match your trailer.
Features include 12″ × 2″ electric brakes, Posi-Lube® greaseable spindles, heavy-duty 3″ cambered axle tubes, durable powder-coated finishes, and optional 16″ 8-lug trailer wheels with ST235/80R16 radial trailer tires.
Free Shipping in the Lower 48 States.
SKU: R70-SBA-KITS -
3,500 lb Axles, 7,000 lb Capacity, Rockwell American Axles, Tandem Axle Kits, Trailer Axles
Rockwell American Tandem 3,500 lb Electric Brake Trailer Axle Kits
3,500 lb Axles, 7,000 lb Capacity, Rockwell American Axles, Tandem Axle Kits, Trailer AxlesRockwell American Tandem 3,500 lb Electric Brake Trailer Axle Kits
Rockwell American Tandem 3,500 lb Electric Brake Trailer Axle Kits — configurable tandem trailer axle kits available in Axles Only, Suspension Kit, Build Kit, and Running Gear Kit options. Choose your hub-face / spring-center (HF/SC) measurements for the right fit for utility trailers, cargo trailers, landscape trailers, car haulers, and other tandem axle trailer applications.
Features dual electric brake axles, Posi-Lube® greaseable spindles, and durable powder-coated construction. Running Gear Kits include trailer wheels and ST205/75R15 radial trailer tires.
Free Shipping in the Lower 48 states.
SKU: R35-TDB-KITS -
3,500 lb Axles, 7,000 lb Capacity, Rockwell American Axles, Tandem Axle Kits, Trailer Axles
Rockwell American Tandem 3,500 lb Trailer Axle Kits – Brakes on 1 Axle
3,500 lb Axles, 7,000 lb Capacity, Rockwell American Axles, Tandem Axle Kits, Trailer AxlesRockwell American Tandem 3,500 lb Trailer Axle Kits – Brakes on 1 Axle
Rockwell American Tandem 3,500 lb Trailer Axle Kits with brakes on 1 axle — configurable tandem trailer axle kits available in Axles Only, Suspension Kit, Build Kit, and Running Gear Kit options. Choose your hub-face / spring-center (HF/SC) measurements for the right fit for utility trailers, cargo trailers, landscape trailers, car haulers, and other tandem axle trailer applications.
Features one electric brake axle, one idler axle, Posi-Lube® greaseable spindles, and durable powder-coated construction. Running Gear Kits include trailer wheels and ST205/75R15 radial trailer tires.
Free Shipping in the Lower 48 states.
SKU: R35-TBI-KITS -
10,400 lb Capacity, 5,200 lb Axles, Rockwell American Axles, Tandem Axle Kits, Trailer Axles
Rockwell American Tandem 5,200 lb Electric Brake Trailer Axle Kits
10,400 lb Capacity, 5,200 lb Axles, Rockwell American Axles, Tandem Axle Kits, Trailer AxlesRockwell American Tandem 5,200 lb Electric Brake Trailer Axle Kits
Build, repair, or upgrade your trailer with genuine Rockwell American Tandem 5,200 lb Electric Brake Trailer Axle Kits featuring electric brakes on both axles. Available in Axles Only, Suspension Kit, Build Kit, and Running Gear Kit configurations with multiple hub face and spring center sizes to match your trailer setup.
Features include 12″ x 2″ electric brakes, Posi-Lube® greaseable spindles, heavy-duty 3″ cambered axle tubes, double-eye leaf springs on applicable kit levels, and optional 15″ 6-lug wheels with ST225/75R15 radial trailer tires. Designed for dependable braking performance, simplified maintenance, and long-term towing reliability.
Free shipping in the lower 48 states.
SKU: R52-TANDEM-KITS -
14,000 lb Capacity, 7,000 lb Axles, Rockwell American Axles, Tandem Axle Kits, Trailer Axles
Rockwell American Tandem 7,000 lb Electric Brake Trailer Axle Kits
14,000 lb Capacity, 7,000 lb Axles, Rockwell American Axles, Tandem Axle Kits, Trailer AxlesRockwell American Tandem 7,000 lb Electric Brake Trailer Axle Kits
Rockwell American Tandem 7,000 lb Electric Brake Trailer Axle Kits include (2) 7,000 lb electric brake axles for a combined 14,000 lb Gross Axle Weight Rating (GAWR). Available in Axle Only, Suspension Kit, Build Kit, and Running Gear Kit configurations, these American-made kits are ideal for trailer repairs, complete running gear replacement, and new trailer construction.
Features include 12″ × 2″ electric brake assemblies on both axles, Posi-Lube® greaseable spindles, heavy-duty 3″ cambered axle tubes, durable powder-coated finishes, and optional 16″ 8-lug trailer wheels with ST235/80R16 radial trailer tires. Choose from multiple Hub Face (HF) and Spring Center (SC) sizes to match your trailer.
Made in America. Free Shipping in the Lower 48 States.
SKU: R70-TBA-KITS -
14,000 lb Capacity, 7,000 lb Axles, Rockwell American Axles, Tandem Axle Kits, Trailer Axles
Rockwell American Tandem 7,000 lb Electric Brake Trailer Axle Kits – Slipper Springs
14,000 lb Capacity, 7,000 lb Axles, Rockwell American Axles, Tandem Axle Kits, Trailer AxlesRockwell American Tandem 7,000 lb Electric Brake Trailer Axle Kits – Slipper Springs
Rockwell American Tandem 7,000 lb Electric Brake Trailer Axle Kits with Slipper Springs include (2) 7,000 lb electric brake trailer axles for a combined 14,000 lb Gross Axle Weight Rating (GAWR). Available in Axle Only, Suspension Kit, Build Kit, and Running Gear Kit configurations, these American-made kits are ideal for trailer repairs, complete running gear replacement, and new trailer construction.
Features include 12″ × 2″ electric brake assemblies on both axles, Posi-Lube® greaseable spindles, heavy-duty 3″ cambered axle tubes, slipper springs, tandem slipper spring hanger kit (Build Kit and Running Gear Kit), and optional 16″ 8-lug trailer wheels with ST235/80R16 radial trailer tires. Choose from multiple Hub Face (HF) and Spring Center (SC) sizes to match your trailer.
Made in America. Free Shipping in the Lower 48 States.
SKU: R70-TDB-S-KITS -
Suspension, Trailer Parts
Axle Spring and U-Bolt Kit – (2) 6-Leaf Springs, 1/2″ U-Bolts – 7,000 lb Capacity
Suspension, Trailer PartsAxle Spring and U-Bolt Kit – (2) 6-Leaf Springs, 1/2″ U-Bolts – 7,000 lb Capacity
The Axle Spring Kit includes two 6-leaf double-eye springs built for superior strength, balance, and durability. Rated at 3,500 lbs per spring (7,000 lbs per pair), these heavy-duty springs deliver reliable suspension performance for dump, equipment, utility, and cargo trailers. Designed to flex and absorb road shock, they reduce frame stress and maintain stable ride quality under heavy loads.
SKU: 9150021-03
SKU: 9150021-03 -
Suspension, Trailer Parts
4-Leaf Double-Eye Trailer Spring – 1,750 lb Capacity
The Trailer Parts Pro™ 4-Leaf Double-Eye Trailer Spring is a dependable suspension solution for 3,500 lb trailer axles. Built from high-strength spring steel, this 25-1/4″ long, 1-3/4″ wide spring flexes to absorb road shock and reduce bounce — protecting your frame and cargo. The included nylon bushing ensures smooth movement for a stable, level ride. Perfect for utility, boat, cargo, and landscape trailers.
SKU: PR4B
SKU: PR4B -
Suspension, Trailer Parts
6-Leaf Double-Eye Trailer Spring – 3,500 lb Capacity
The Trailer Parts Pro™ 6-Leaf Double-Eye Trailer Spring is built for maximum strength and performance on 7,000 lb trailer axles. Each spring delivers a 3,500 lb load capacity, providing superior stability and support for heavy-duty trailers. Made from high-strength spring steel, it flexes to absorb road shock, minimize bounce, and protect your trailer’s frame and cargo. Ideal for equipment, car hauler, cargo, and utility trailers, this spring ensures long-lasting durability and a smoother ride.
SKU: PR6
SKU: PR6 -
Dump Trailer Parts Kits, Trailer Parts Kits
10.4K Dump Trailer Parts Kit – PH516 Hoist
* Free Shipping to Commercial Address in the Lower 48 States or Freight Terminal Near You, Contact us at 602-292-9690 for Assistant with Freight Terminals near you*
SKU: 14K-S Dump Trailer Parts Kit - PH516 Hoist-1 -
Trailer Parts, U-Bolts Kits
U-Bolt Kit for Mounting a 2-3/8″ Round Trailer Axle (3,500-lbs)
Mount your 2-3/8″ Round Diameter 3,500-lb Trailer Axle to your Trailers Leaf Springs with this U-Bolt Kit
Fits 1-3/4″ Wide Springs
Included Parts in this U-Bolt Kit:
(4) – U-Bolts ( 1/2″ 20 x 5.50″ Long )
(2) – U-Bolt Plates
(8) – 1/2″ Flanged Nuts
SKU: APUBR-1
SKU: APUBR-1 -
Trailer Axles, Trailer Parts, U-Bolts Kits
U-Bolt Kit for Mounting a 3″ Round Trailer Axle (5,200-7,000 lbs)
Trailer Axles, Trailer Parts, U-Bolts KitsU-Bolt Kit for Mounting a 3″ Round Trailer Axle (5,200-7,000 lbs)
Mount your 3″ Round Diameter Trailer Axle to your Trailers Leaf Springs with this U-Bolt Kit (5,200-7,000 lb Axles)
Fits 2″ Wide Springs
Included Parts in this U-Bolt Kit:
(4) U-Bolts ( 9/16″ – 18 x 7″ Long )
(2) U-Bolt Plates
(8) Hex Nuts (9/16″ – 18)
(8) Split Lock Washers (9/16″)
SKU: n/a
