3.5k TK Light Duty Single Axle Kit - 3500 lb Capacity 5x4.5 (Drop Axle Series)

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3.5k TK Light Duty Single Axle Kit - 3500 lb Capacity 5x4.5 (Drop Axle Series)

3.5k TK Light Duty Single Axle Kit - 3500 lb Capacity 5x4.5 (Drop Axle Series)

SKU : 35SLDAKTTK-DROPST7300545

Online price only

Regular price $329.99

Online price only

SAVE 0% (833) 910-3416
3.7
Rated 3.7 out of 5 stars
9 Reviews
Shipping: Calculated at Checkout
Kit Options:
Hubface/Spring Center:
Bolt Pattern:
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3.5k TK Light Duty Single Axle Kit, 3500 lb capacity | 5×4.5 bolt pattern | 4" drop

Build your light-duty trailer with a complete 3.5K idler axle kit designed for reliability, proper load handling and simple installation. This kit gives you all the core suspension parts needed for utility trailers, cargo trailers, small equipment trailers and more. The axle arrives fully assembled to save you time, reduce setup errors and help you get your trailer on the road faster.

Axle and Suspension Specifications

  • Load rating: 3,500 lbs
  • Axle type: Idler
  • Drop: 4"
  • Tube diameter: 2 3/8"
  • Bolt pattern: 5×4.5
  • Spring type: Double eye
  • Spring size: 25.25"
  • Spring capacity: 1,750 lbs each
  • Product compatibility: Works for most light-duty trailer builds and direct replacements

What’s Included

  • 1 — 3.5K Idler Axle, 5×4.5 pattern, 4" drop
  • 2 — 1.75K 25.25" 4-leaf double-eye springs
  • 1 — 3.5K U-bolt kit
  • 1 — Double-eye hanger kit

Key Benefits

  • Fully assembled axle packed with high-temp grease
  • EZ-Lube design with zerk fitting for fast maintenance
  • Loose spring seats included for welding during final setup
  • High-strength steel axle tube for durability and smoother towing
  • All core suspension components in one matched kit

Ideal For

  • Utility trailers
  • Boat trailers
  • Cargo trailers
  • Lawn and landscape trailers
  • Motorcycle and ATV trailers
  • BBQ pit trailers
  • Small RV and enclosed trailers
  • Custom light-duty builds

Why Buy from The Trailer Parts Outlet?

  • Proudly assembled in the U.S.A.
  • Fast shipping
  • Bulk and wholesale options
  • Financing available
  • Expert phone support

Have questions or need a custom axle? Call (936) 289-3191 and our team will help you get the perfect setup.

Order your 3.5K idler single axle kit today and start your build with confidence.

3.7
Rated 3.7 out of 5 stars
Based on 9 reviews
Total 5 star reviews: 5 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 1 Total 1 star reviews: 2
Customers Talked About
9 reviews
  • EE
    Eric E. S.
    Verified Buyer
    3 weeks ago
    Rated 5 out of 5 stars
    Replacement axle!

    Perfect replacement!

  • CK
    Cindy K.
    Verified Buyer
    1 month ago
    Rated 1 out of 5 stars
    Wrong axle

    The axle was completely wrong, cost me $300 total in shipping!

  • CR
    CHRISTOPHER R. C.
    Verified Buyer
    2 months ago
    Rated 5 out of 5 stars
    Axle and spring kit

    Easy to work with and helpful. Had everything I needed to swap axles. Quality parts. I would recommend this vendor.

  • DL
    Dean L.
    Verified Buyer
    6 months ago
    Rated 5 out of 5 stars
    Perfect replacement axle kit

    My 25-year-old aluminum trailer axle had rusted in half! I looked online for a replacement for the axle and after reviewing several suppliers, bought this kit from the Trailer Parts Outlet. I changed the type of suspension. The explanation and details on the web site were very helpful in ordering the correct parts. I found the parts to be as described, and the trailer is now ready for another 25 years!

    The Trailer Parts Outlet
    6 months ago

    Great to hear about the successful replacement, Dean! Thank you for choosing us and for taking the time to share your experience. We're thrilled that our website details helped you select the right parts and that your trailer is set for many more years of service. We appreciate your business.

    (936) 935-2186
    The Trailer Parts Outlet

  • NF
    Nathan F.
    Verified Buyer
    7 months ago
    Rated 4 out of 5 stars
    Almost perfect

    Nice chat with sales rep. Very knowledgeable and helpful.

    Everything arrived surprisingly. FedEx beat the love out of the packages.

    1 u-bolt was unusable with no threads (quality control issue). CS hasn't resolved that issue yet.

    Review isn't being left for the 3% future use coupon. Lol

    The Trailer Parts Outlet
    7 months ago

    Thank you for the feedback, Nathan! We're glad our sales rep was able to help you out with the knowledge you needed. Sorry to hear about the rough handling from FedEx and the u-bolt issue - we'll make sure to follow up on getting that resolved for you. We appreciate your business and your honest review!

    (936) 935-2186
    The Trailer Parts Outlet