POWERED BY R&P CARRIAGES

Need a Trailer Part

U-Bolt Kit – Dexter HDSS Suspension – Underslung Only – 12K–16K Axles (UBK-HDSS-US)

$179.99
Contact us for availability

Enter the quantity you need to check availability.

Not Sure It Fits? Ask a Pro
R&P PARTS GUIDE

At a Glance

  • SKU: UBK-HDSS-US
PRODUCT INFORMATION

Product Details

R & P Carriages

UBK-HDSS-US U-Bolt Kit – Dexter HDSS Suspension – 12K–16K Axles

Includes 4× 011-94-00 U-Bolts | 8× 006-113-00 Nuts | 2× 012-068-01 Cast Tie Plates

UBK-HDSS-US is a complete suspension hardware kit designed for Dexter HDSS heavy-duty suspension systems used on 12,000 lb to 16,000 lb trailer axles. This kit includes matched U-bolts, lock nuts, and cast bottom tie plates required to properly clamp the axle to the spring assembly.

IMPORTANT – CONFIGURATION REQUIREMENT

This kit is designed for suspension setups where the axle tube sits on top of the leaf springs. The included cast bottom tie plates (012-068-01) are engineered for that configuration only.

It will NOT fit setups where the springs sit on top of the axle tube.
Dexter HDSS axle positioned above leaf springs installed configuration
Component Quantity & Detail
U-Bolts 4 × 011-94-00 – 3/4"-10 Thread, 5" Round Bend, 11-1/32" Length
Lock Nuts 8 × 006-113-00 – 3/4"-10
Tie Plates 2 × 012-068-01 – Cast Bottom Plate for HDSS Systems
R&P Knowledge Hub
In Dexter HDSS systems, U-bolts wrap over the axle tube and clamp it to the leaf spring pack. The cast bottom tie plate distributes clamping force evenly across the spring pack and maintains axle alignment.

U-bolts should not be reused after removal, as previously torqued hardware may not maintain proper clamping force. Always verify axle rating, tube diameter (5" round), and suspension geometry before installation.
Dexter 011-94-00 U-Bolt 3/4-10 5 inch round U-Bolt Dimension Diagram A Thread Diameter B Inside Width C Overall Length
U-Bolt Specification Detail
Axle Tube Diameter 5" Round
Thread Size 3/4"-10 (10 TPI)
Overall Length 11-1/32"
Bend Type Round

Important: Confirm axle diameter, rating, and suspension geometry before installation.

Related Parts & Kits

Check fitment, measurements, and kit contents before ordering. Related parts may not be required for your repair.
Looking up part numbers in our catalog…
Your repair list1 item selected

Selected products are added together. Review the cart and verify kit contents to prevent duplicates. Prices and discounts are determined at checkout.

BEHIND THIS LISTING
PHOTOGRAPHY & RESEARCH Ariah Granados Ariah’s handwritten signature
DIGITAL PRESENTATION & DEVELOPMENT Ken Martin Ken’s handwritten signature
ONLINE SALES & QUALITY ASSURANCE Rayn Fisher
WE’RE HERE TO HELP

Not sure it fits?

Have your SKU or manufacturer part number, photos of the original part and mounting, and any critical measurements ready. Capacity, voltage, or bolt pattern can help too.

815-357-3292  ·  270 E Jackson St  ·  Seneca, IL 61360

CUSTOMER REVIEWS

Good people. Real trailer work.

Customer feedback summarized from Google and Yellow Pages. Dates are shown where available.

Leave a Google review
TRAILER PARTSGOOGLE

Ordered trailer repair parts repeatedly; praised fast service, careful packing, and accurate orders.

Luke HeiserOCT 2026
RV KEYSGOOGLE

Found the correct RV keys at a good price with free shipping; the keys worked as expected.

Vanessa ROCT 2026
AXLE & LEAF SPRINGSGOOGLE

Needed an unusual axle and leaf-spring size; the team listened and helped him sort out the fit.

Cory StrubertOCT 2026
Showing 3 of 50

Need help with this part? Send photos, part numbers, and measurements. We’ll help you narrow it down.