5-4.5" Bolt Circle 3,500 lbs. Lippert® Pre-Greased Trailer Axle Self-Adjusting Electric Brake Kit - PGBK545ELEAUTO-LCI

The Lippert® 10" Pre-Greased Self-Adjusting Electric Trailer Brake Kit is a complete, genuine OEM replacement solution designed to fully refresh both wheel ends of your trailer's 3,500-lb. axle. This all-in-one kit eliminates the hassle of packing bearings and manual brake adjustments, providing a cleaner installation and significantly enhanced highway safety.

Key Features

• Axle Capacity: 3,500 lbs.
• Brake Size: 10" x 2-1/4"
• Bolt Pattern: 5 on 4.5"
• Stud Size: 1/2" Zinc-Plated (Pre-installed)
• Adjustment Type: Forward self-adjusting for up to 50% shorter stopping distances
• Bearings Included: Pre-greased L44649 outer cones and L68149 inner cones (Pre-installed)
• Finish: E-coat backing plates for superior rust and corrosion resistance
• Brand: Genuine Lippert®

This premium kit features heavy-duty self-adjusting electric brake assemblies that automatically adjust during every forward stop, ensuring optimal brake shoe-to-drum clearance and preventing premature lining wear. The included durable cast-iron hub drums come completely pre-greased with the races and bearing kits pre-installed for a quick, mess-free DIY setup. Equipped with automotive-grade friction material and protective adjuster plugs, this kit delivers consistent braking power and shields vital internal components from road debris.

Note: Please reference your original equipment label before purchasing. Be sure to inspect and maintain your brakes periodically, as worn-out brakes can lead to axle failure. Ships in a durable brown box with an informative full-color retail label and comes with a 1-year limited warranty on materials and workmanship.

Questions about compatibility with your hub or axle? Call our trailer experts at 1-800-866-3336.

Browse more trailer brakes or trailer hubs and bearings.

QAI Certification Testing Standards for Trailer Brakes

QAI Laboratories is an independent, accredited third-party testing and certification organization. QAI certification provides assurance that trailer brakes have been rigorously tested to meet recognized safety and performance standards.

Primary Standards for Trailer Brakes

• CAN3-D313-M85 (R2012) — Canadian standard for Trailer Running Gear (axles, brakes, and suspension)
• CSA Z240 — Recreational Vehicles and Manufactured Housing standard
• FMVSS / CMVSS — Federal Motor Vehicle Safety Standards (U.S. and Canada) for braking performance
• UL Electrical Standards — Testing of brake magnets, wiring, and electrical components

What QAI Tests

• Braking performance and stopping power
• Electrical current draw and magnet strength
• Resistance to water, dust, heat, and corrosion
• Mechanical durability and long-term wear
• Self-adjusting mechanism performance (when applicable)
• Safety labeling and traceability

Trailer brakes that carry the QAI Certified mark (including many TruRyde® and Lippert® models) have been independently verified to meet these strict standards, giving you confidence in safety and reliability.

QAI Certified Trailer Brake Brands (Industry-Wide)

QAI Laboratories is a respected independent testing and certification organization. Below is the current status of major trailer brake brands regarding QAI certification:

Note: QAI certification is a strong indicator of independent safety and performance testing. Always verify current certification status on specific part numbers when safety is critical.