Description
The TruRyde® 5-on-5.5″ Self-Adjusting Electric Brake Kit with Timken® Bearings (Part BK555ELEAUTO-TK) is a complete 3,500 lb axle brake and hub upgrade kit featuring premium Timken® bearings for smooth and reliable performance.
Key Features
- Part Number: BK555ELEAUTO-TK
- Brand: TruRyde®
- Capacity: 3,500 lbs per axle
- Bolt Pattern: 5 on 5.5″ (5/5.5)
- Brake Type: 10″ x 2.25″ Self-Adjusting Electric Brakes
- Bearings: Timken® L68149 Inner / Timken® L44649 Outer
- Spindle: 84 Spindle
- Includes: Pair of 10″ hub/drums (5 studs), Timken® bearings & races, grease seals, grease caps, ultra lube grease caps, spindle washers, spindle nuts, cotter pins, tang washers, lug nuts, and one pair of self-adjusting electric brake assemblies (LH & RH) with mounting hardware
- Brake Mounting: 4-Hole
- Compatibility: Fits Alko, Dexter, Lippert, Rockwell, Quality, and other popular 3,500 lb trailer axles with 4-hole brake flange
- Quality: Premium TruRyde® components with genuine Timken® bearings
This complete brake kit is ideal for upgrading or replacing brakes and hubs on 3,500 lb axles with a 5 on 5.5″ bolt pattern. The self-adjusting feature provides consistent braking performance with minimal maintenance.
Questions about this TruRyde self-adjusting electric brake kit or compatibility with your axle? Call our trailer experts at 1-800-866-3336.
Browse more Trailer Brake Kits.
| Part No | Quantity | Description |
| RVD-U-555 | 2 | TruRyde® 5-5.5″ 10″ Hub and Drum |
| BK-10E-01SA | 1 | TruRyde® 10″x2.25″ Left Hand Self-Adjusting Electric Brake |
| BK-10E-02SA | 1 | TruRyde® 10″x2.25″ Right Hand Self-Adjusting 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.
