Product Description
Heavy-Duty Hauling: Carter 8K Electric Brake Triple Trailer Axle Kit
This heavy duty 8k triple axle trailer kit allows you to easily upgrade your 7k axles to heavy duty 8k axles with ease. with the 7 leaf 27" long springs that come in this kit, it makes it simple to upgrade your axles since in MOST cases (not all) but most cases all 7k axles come standard with the 5 leaf 27" long slipper springs. What this does is allow you to easily upgrade without having to cut or weld new hangers in place in order to upgrade. simply drop your old axles and put these in place. This kit comes with everything you need to install axles to trailer. So you get 3 new heavy duty 8k electric brake trailer axles, 6 of the 7 leaf heavy duty leaf springs, 3 of the 3-½” u bolt kits and one triple trailer axle hanger kit. Everything you need to install axles on trailer and get you on the road
Kit Includes:
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3) 8000 lb Heavy duty electric brake trailer axle 8 lug
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6) 7 leaf slipper springs 26-5/8" Long x 2" Wide
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3) 3-1/2" U-Bolt Kit
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with the option to add a triple axle hanger kit
This kit comes with EVERYTHING you need to install the tandem axles to your trailer and get you on the road!
Axle Specs:
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Brand: Carter
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Brakes: Auto Adjusting Electric
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Brake Size: 12-1/4” x 3-3/8”
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Axle Tube: Round
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Tube Size: 3-½” Diameter
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Tube Thickness: 3/8"
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Inner Bearing: 25580
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Outer Bearing: 04275
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Seal: 10-63
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Lubrication: Oil or Grease
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Powder Coated Black
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5/8” Studs
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8 on 6.5” Bolt Pattern
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4.75” Pilot Diameter
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Pre-Wired
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Fully Interchangeable with Dexter Axles
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Aluminum oil/grease Hub Caps for added protection
- You can use 16" or 17.5" super singles tires wheels with this axle kit
Leaf Spring Specs:
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Spring length: 26-5/8” from center I to end
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Spring width: 2”
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Number of leaves: 7
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Interchangeable part Part #: 72-51
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6 leaf springs total come with kit
U bolt kit specs:
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Each u bolt kit comes with (4) u bolts, (2) tie plates, and the nuts
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1 u bolt kit per axle
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3 kits total come with package
Hanger Kit Specs:

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Interchangeable Part # THK2WSS, 27-APT288, APT288, P4114-H-3
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Includes:
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(2) 3-3/4" Tall front hangers
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(4) Center Hangers
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(4) 12” Long Equalizers
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(2) 5-1/6" Tall rear hangers
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(4) Equalizer Bolts ⅞”
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(4) Equalizer Nuts
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(12) 3-1/2" Long x 9/16" diameter shackle bolts
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(12) 9/16" Diameter locknuts
Key Features:
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8,000 lb Capacity: Haul heavy loads with confidence, knowing your trailer is equipped with a quality axle designed for demanding use.
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Electric Brakes: Experience superior stopping power and control with the integrated 12-1/4" x 3-3/8" electric brake system with auto-adjust technology.
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8 Lug Configuration: The 8-lug on 6.5” bolt pattern is standard for all 8 lug axles 5.2k - 12k.
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3-1/2" Heavy Duty Axle Tube: Built with a thicker axle tube than competitors, this axle is engineered for maximum durability and longevity.
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Powder Coated: Protect your investment with a durable powder coat finish that resists corrosion and wear.
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Dexter Compatible: Easily replace or upgrade your existing Dexter axle with this 100% compatible Carter axle.
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Spring Pad Options: Choose between pre-welded spring pads for a fixed configuration or loose pads for customizable placement.
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5-Year Warranty: Rest easy knowing your investment is protected by a comprehensive 5-year warranty.
Why Choose Trailer Parts Unlimited?
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Expert Guidance: Our knowledgeable team is ready to help you select the perfect axle for your trailer's needs.
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Wide Selection: Browse our extensive inventory of trailer parts and accessories to find everything you need to keep your trailer in top shape.
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Competitive Pricing: Get top-quality trailer parts at the best possible prices.
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Guaranteed Satisfaction: We stand behind our products with a hassle-free return policy.
Don't settle for less. Upgrade your trailer with the Carter 8K Heavy-Duty Electric Brake Trailer Axle today and experience the difference in performance, durability, and reliability.
How to measure your trailer axle:
Spring Center:
Measure from center of one spring to center of the other spring on the same axle. If you are alone and have no friends like myself, you can hook the tape measure of the outside of one spring and pull down the axle to the inside of the other spring on the same axle
Hub Face:
You can measure from center tire to center tire to get a pretty good idea of your hub face measurement.
You can take the tires off the axle and measure from one hub where the studs pretrude out from the hub to the other hub on the same axle.
***Note: the hub face measurement can vary a little bit but the spring center measurement needs to be exact or you will have a difficult time installing the trailer axles.
***We also sell the axles with the spring pads not welded on so you can put them where ever you want.