Trailer Axle

Dually

• Modern version has same rim but flipped.
• Axle must be special elongated, to accept 2 wheels back to back
• $3500 [1]

Tandem Axle Suspension

• Not leaf spring but rubber. 10k lb [2]. These go up to only 14k.

Axle or Kit

Hint: 3 axle x 7k is most cost effective, but this runs into the issue of difficult turning - rubber rips on short radius

• 21k triple axis with wheels and brakes $3600 [3]
  • Note that 7k axles are $700, while 16k axles are $3700 - why the huge jump?

• Double axle kit is disproportionately expensive compared to triple. 20k lb double axle kit - $8.4k [4]
• 7k - $700 [5]. 7k with wheels $1100, includes electric brakes. [6]
  • Note that the 3500 lb version of this is disproportionately expensive at 80% the price at 1/2 the spec, at $850 [7]
  • $500 for 3.5k with wheels ,no brakes [8]
  • Note that 10k axles are likewise disproportionately expensive in kit form, but just axle is close to 7k [9]
• 15k - electric - $3200 [10].
• 15k - $2500 [11]

• 28k lb axle kit - dual tandem - [12]
• Base cost of $750 for 7k axle - no wheels or mount kit
• $3k for 14k trailer axle set. Electric brakes. [13]

• $1354 for 7k with brakes [14]

15k Axles

• $2k bare cost [15]

Kit - Wheels, Springs, Etc

• 35⁰0 lb cheapo axle $360 -[16]

Trucks

• Even an F150 can pull 14000 lb [17] on a ball, not even gooseneck.
• No special license if truck is under 26k lb [18]