Build Your Axle Stub Kit – 2,000 lb Capacity

4 on 4" Idler Hubs • Flanged Stub Spindles • Complete Hardware Set

Part Number: BYOAK-440BT16FZ-KITX2

Need to replace the stub spindle assemblies on a 2,000 lb trailer axle? This complete axle stub kit includes everything required to replace both sides of the axle — from flanged spindles to bearings, seals, hubs, and hardware.

Ideal for utility trailers, small cargo trailers, and light-duty applications.

Axle & Spindle Specifications

What’s Included (Complete Kit for Both Sides)

• (2) SP-150BT16FZ Flanged Stub Spindles
  • 2,000 lb rated
  • Round end
  • 1.50" × 3.37"
  • Flanged and pre-lubed
  • Fits L44649 bearings
  • Fits 10-60 grease seal
• (2) 88440-1 Idler Hubs
  • 2,000 lb capacity
  • 4 on 4" bolt pattern
  • 1/2" wheel studs
  • Cupped & studded
• (8) L44649 Bearings
  • 1.0625" inside diameter
  • Fits L44610 race
• (2) 10-60 Grease Seals
  • 1.50" × 1.98"
• (2) FA-SN100 Castle Nuts
  • 1" thread
• (2) SW1000 Round Washers
  • 1"
• (2) Cotter Pins (165649)
  • 1/8" × 1-3/4"
• (2) DC-200L Dust Caps
  • 1.98"
  • Rubber insert

Important Notes

• This kit replaces both axle ends (left and right)
• Professional installation recommended
• Verify axle rating and bolt pattern before ordering