Description
The 5-4.5″ Bolt Circle 3,500 lbs. TruRyde® Trailer Axle Electric Brake Kit with Timken® Bearings (Part BK545ELE-TK) offers premium braking performance and superior durability for 3,500 lb. trailer axles. Equipped with genuine Timken® bearings, this complete kit ensures smooth operation, excellent heat resistance, and long service life.
Key Features
- Part Number: BK545ELE-TK
- Brand: TruRyde®
- Axle Capacity: 3,500 lbs.
- Bolt Circle: 5 on 4.5″
- Brake Size: 10″ x 2.25″ Electric Drum Brakes
- Bearings: Timken® L68149 Inner & Timken® L44649 Outer
- Spindle: 84 Spindle
- Mounting: 4 Hole Brake Flange
Technical Specifications
- Pair of 10″ TruRyde® hub/drum assemblies with 5 studs on 4.5″ bolt circle using Timken L68149 inner and Timken L44649 outer bearing
- Contains inner bearings, outer bearings, grease seals, grease caps, ultra lube grease caps, spindle washers, spindle nuts, cotter pins, tang washers, and lug nuts (84 Spindle)
- Pair of 10″ x 2.25″ TruRyde® electric trailer brake assemblies with parts
- 4 Hole Mounting – works with Alko, Dexter, Quality, and other popular trailer axle manufacturers
- Fits 3,500 lbs. trailer axles with four-hole brake flange
- Includes full mounting hardware
- Fully assembled backing plates with shoes, springs, and magnets attached (one left hand + one right hand)
This TruRyde® brake kit with premium Timken® bearings is an excellent choice for boat trailers, utility trailers, cargo trailers, and other 3,500 lb. applications that demand reliable braking and maximum bearing life.
Questions about this TruRyde brake kit or compatibility? Call our trailer experts at 1-800-866-3336.
Browse more Trailer Electric Brake Kits.
| Part No | Quantity | Description |
| RVD-U-545 | 2 | TruRyde® 5-4.5″ 10″ Hub and Drum |
| BK-10E-01 | 1 | TruRyde® 10″x2.25″ Left Hand Electric Brake |
| BK-10E-02 | 1 | TruRyde® 10″x2.25″ Right Hand Electric Brake |
| 716LW | 8 | 7/16″ Lock Washer |
| 716NFN | 8 | 7/16″ Fine Hex Nut |
| DC-198 | 2 | 1.98″ Dust Cap |
| FS622P | 2 | 1.98″ Lube Dust Cap with Rubber Plug |
| TW100 | 2 | 1″ Tang Washer |
| A1W | 2 | 1″ Spindle Washer |
| FA-SN100 | 2 | 1″-14 Spindle Nut |
| 18X134CP | 2 | Cotter Pin |
| L68149 | 2 | Timken® Inner Bearing |
| L44649 | 2 | Timken® Outer Bearing |
| GS-1719DL | 2 | 1.719″ ID Double Lip Grease Seal |
| X1023R | 10 | 1/2″-20 Lug Nut 60 Degree 13/16″ WAF |
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:
| Brand | QAI Certified | Notes |
|---|---|---|
| TruRyde® | Yes | Most models are QAI Certified — Southwest Wheel’s primary brake line |
| Lippert® | Yes | Many electric and hydraulic brake assemblies are QAI Certified |
| UFP | Yes | Especially strong on hydraulic disc brake systems |
| Kodiak | Yes (Select Models) | Many disc brake kits carry QAI certification |
| Dexter® | Limited / Not Commonly Advertised | Focuses on internal testing and FMVSS compliance |
| Generic / Chinese Brands | Very Rarely | Most low-cost imported brakes sold on marketplaces do not carry 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.
