Parts Needed For An Over-Under Suspension Conversion On A Boat Trailer

Updated 04/11/2024 | Published 03/24/2024

Products Featured in This Question

Dexter Trailer Springs Over-Under Conversion Kit

(817)

$80.32

2" Square Trailer U-Bolt (Qty 2)

(682)

$26.29

U-Bolt Plate - 2" Wide, Square Trailer Axle - 1-3/4" Wide Spring - 9/16" Bolts

(152)

$14.09

Question:

Hey Kevin, This is Travis who submitted the questions recently about a axel flip. Here are the pictures. Thank you so much for your time.

asked by: Travis D

Expert Reply:

Hey Travis,

Since you have a square tube axle the Dexter over-under conversion kits aren't going to have the correct spring seats. We don't currently offer square tube spring seats so you'll need to source them somewhere else and then have a qualified welder weld the new spring seats on the bottom of the axle at the same spot as the originals. You'll want to measure the axle to make sure you're getting the correct size.

From there you'll just want to replace the u-bolts because as they get torqued down they'll bend to conform to the axle. Removing and reusing u-bolts can weaken their integrity so we also recommend replacing them. To find the correct kit I recommend measuring the axle width and the length of your current bolts so we can find an exact match.

For example, if you had a 2" square axle you'd need two spring seats, 4 u-bolts like # SP01-160 (5-3/4" long), and two u-bolt plates # TRTP200175 per axle. With how close the tire is to the fender you'll definitely need to remove them and have them mounted higher to give yourself at least 3" of clearance between it and the tire.

expert reply by: Kevin C