Need a new Galvanized Torsion Axle for your Boat Trailer? This Axle comes equipped with 5 lug (4.5 inch bolt spacing) Galvanized Idler Hubs and Posi Lube/Accu Lube Spindles with a grease fitting in the end. The axle fits I Beam Trailers with an outside width of 72 inches. This Boat Trailer Torsion Axle is great for Pontoon Boats, Center Console Boats or any other kind of Fresh Water or Saltwater vehicle thanks to its fully hot-dip galvanized construction. Replace your Leaf springs for good with this Torsion Bar Axle.
I Beam Trailer Frame Width Required for This Axle Size -
72-inch Wide Trailer Frames (I-Beam Construction) - Measured outside to outside
Knott Torsion Axle Specifications:
Torsion Axle Track Measurement (Hub Face/Center of Tire) - 86
Brake Flange - 80 inches Outside to Outside
Torsion Bracket - 74 1/2" inches
Outside to Outside
Torsion Axle Starting Angle - 30 Degree Down
This Hot-Dipped Galvanized Torsion Axle ships with galvanized
Idler hubs installed. The hubs and
bearings are pre-greased with a lithium-based grease, but additional grease may be added after
Galvanized Hub Specifications:
5 on 4 ½ inch Bolt Pattern
1 3/8 inch inner bearing, 1 1/16 inch outer bearing
1.72 inch inner diameter grease seal
1.98 dust cap size, dust cap is included and has a removable
rubber plug for easy access to the Spindles built-in Grease fitting.
If you need to replace the mounting hardware as well, either Click
the Check Box for (4) I Beam Torsion Axle Mounting Bolts SS, or Go to 1/2 inch
Diameter by 1 1/2 inch Long Stainless Steel Bolt and
order the quantity you need (typically 4 total per axle.)
New Mounting Holes May need to be drilled in order to install the
These Axles can be used on Boat Trailers or Utility Trailers. Box Trailers, Car Haulers, Horse Trailers etc. can all benefit from the Torsion Arm System over leaf springs, and the Galvanized Coating will last even longer if the trailer isn't entering saltwater.