What is the Difference Between Timbren Standard Duty and Heavy Duty 3.5K Axle-Less Kits
Updated 01/27/2026 | Published 08/27/2024
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Question:
What is the differences between Timbren Heavy Duty and Standard Duty axle-less suspensions?
asked by: Troy
Expert Reply:
Hey Troy, thanks for reaching out!
The Standard Duty Timbren Axle-Less Trailer Suspension - 4" Lift # ASR3500S06 fits with standard 3.5K brakes and hubs while the Heavy Duty Timbren Axle-Less Trailer Suspension - 4" Lift # ASR35HDS02 work with 5.2K brakes and hubs.
Basically, you just need the Heavy Duty style if you plan on using the trailer for more aggressive terrain like off-roading.
3.5K Brakes and Hubs
- Brakes # AKEBRK-35-SA
- Hub Drum # AKHD-545-35-EZ-K
5.2K Brakes and Hubs
- Brakes # AKEBRK-7-SA
- Hub Drum # AKHD-655-6-EZ-K
Product Page this Question was Asked From
Timbren Axle-Less Trailer Suspension - Standard Duty - 4" Lift - 4 Bolt Flange - 3,500 lbs
- Trailer Axles
- Rubber Spring Suspension
- Standard Grade
- No Hubs
- 3500 lbs
- Spindles Only
- Universal Fit
- Lift - 4 Inch
- Timbren
more information >
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Jesse M.
1/27/2026
Hey Troy, how did things go deciding between the Standard Duty and Heavy Duty Timbren axle-less suspensions? It’d be great to hear which setup you went with and how it’s performing. Your update could make it easier for others comparing these two options.