12k Tandem Trailer Axle Kit | HDSS Hutch Suspension

12K Tandem Trailer Axle Kit | HDSS Hutch Suspension | 24K GVWR

Everything You Need to Build a Heavy-Duty Trailer

This complete Carter 12K Tandem Trailer Axle Kit comes with everything you need to install your axles and suspension system on a heavy-duty trailer rated up to 24,000 lbs GVWR. Designed with HDSS Hutch suspension, this kit delivers top-end strength, smooth ride quality, and easy nationwide parts replacement.

All Carter Axles are 100% fully interchangeable with Dexter Axles and parts, meaning every bearing, seal, hub, and brake component can be serviced or replaced using standard Dexter parts — anywhere in the country.

Kit Includes

• (2) 12K Electric Brake Trailer Axles – 8x6.5" bolt pattern

• (4) 72-48 HDSS Hutch 3-leaf slipper springs (11,200-lb rated, 42" long, 3" wide)

• (2) HDSS U-Bolt Kits (3/4" dia x 12" long U-bolts with nuts)

• (1) Complete HDSS Hutch Tandem Suspension Kit

Everything you need to install axles and suspension — ready for 16" dual wheels or 17.5" single/dual wheel setups.

Axle Specifications

• Capacity: 12,000 lbs per axle

• Bolt Pattern: 8x6.5"

• Tube Diameter: 5" round

• Inner Bearing: 3984

• Outer Bearing: 28682

• Oil/Grease Seal: 10-56

• Brakes: 12-1/4" x 5" Electric Drum (7-hole flange, same as Dexter)

• Studs: 5/8"

• Hub Diameter: 4.75"

• Hub Caps: Upgraded forged aluminum oil hub caps

• Finish: Powder coated

• Hardware: Swivel flange nuts included

• Pre-Wired: Yes

• Lubrication: Works with oil or grease

• Spring Pads: #3-403 HDS Hutch spring pad seats – pre-welded or loose (your choice)

• Wheels: Compatible with 16” duals, or 17.5” single/dual wheel setups

Need custom spacing or welded spring pads?
? Call 844-898-8687 — we can weld your spring pads exactly where you need them before shipping.

U-Bolt & Spring Details

• Part #72-48: HDSS Hutch 11,200-lb 3-leaf slipper spring, 42" long x 3" wide

• Part #UBHDS-1175: 3/4" dia x 12" long U-bolts with nuts (for Hutch suspension)

HDSS Hutch Suspension Kit Includes

• (2) Rear Hangers – 30-75-5

• (4) Tie Plates – 12-068

• (2) Fixed Track Rods – 19.25" (62-11-1)

• (2) Center Hanger & Equalizer Kits – 29-49-1

• (2) Hutch Equalizers – EQHDS

• (2) Adjustable Track Rods – 62-1-1

• (2) Front Hangers – 28-82-5

• (8) 1"-8 x 5-1/2" Equalizer Bolts – 007-169-00

• (8) 1"-8 Lock Nuts – 006-112-00

• (6) 5/8"-18 x 4.5" Keeper Bolts – 7-294

• (6) 5/8" Lock Nuts – 6-126

• (6) Keeper Bolt Sleeves – 33-91

• (2) 1-1/8"-7 x 6" Equalizer Bolts – 007-170-00

• (2) 1-1/8"-7 Lock Nuts – 006-072-00

• (2) 1-1/8" Washers – 118W

• (8) 7/8" U-Bolts with Nuts – UBHDS-1175

• (4) 72-48 HDSS Hutch Slipper Springs

Why Choose Carter Axles

• Dexter-Compatible Nationwide – 100% parts interchangeability for simple service and repairs anywhere.
• Heavy-Duty Design – Forged aluminum oil hub caps, auto-adjust brakes, and thick 5” axle tubes built for serious loads.
• Ready-to-Install Kit – All hardware, hangers, and suspension parts included.
• HDSS Hutch Suspension – Proven for high-capacity trailers with smooth tracking and long life.
• Flexible Setup Options – Pre-welded or loose spring pads, custom fit available.

Summary

The Carter 12K Tandem Axle Kit with HDSS Hutch Suspension is the ultimate heavy-duty setup for trailers that demand performance and reliability. Designed for easy Dexter-compatible maintenance, this complete kit is ready to install, built to haul, and made to last.

Carter Axles — Built Tough. Built Smart. Built to Haul.
TrailerPartsUnlimited.com | 844-898-8687