TB525 EC Curve Shaft String Trimmer

29cc, 4-Cycle Gas Trimmer / Attachment-Capable Design



The TB525 EC gas string trimmer with SpringAssist™ technology is easy to start and easy to use, equipped with a dual line and our SpeedSpool 2™ bump head, allows the trimmer head to be reloaded quickly and easily on the spool! With more power at lower RPM's than a 2-cycle trimmer, this trimmer has an easy-to-use curved shaft and is designed to accept optional trimmer attachments. It also accepts our JumpStart™ electric start adapter. This Troy-Bilt weed trimmer is durable and reliable.


Signature Features

  • No Mixing Oil and Gas
  • SpeedSpool 2™ Bump Head
  • SpringAssist™ Starting Technology
  • JumpStart™ Capable
  • Accepts TrimmerPlus® Attachments

Additional Features

  • 29cc*, 4-cycle engine is cleaner and produces less noise
  • Multi-position Pro handle reduces vibration and operator fatigue

*As rated by engine manufacturer


29cc, 4-cycle gas
Starting System 
Spring Assist™ w/JumpStart™ Capability
Choke System 
Boom Type 
Attachment Capable 
Line Replacement System 
Quick loading
Line Release 
SpeedSpool 2™ bump head
Cutting Swath 
Line Diameter 
Multi-position Pro handle
Weight (Approx.) 
18 lbs
2-year limited

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† † The operator's manual posted is for general information and use. To ensure the download of the operator's manual specific to your unit, we require a model and serial number. Click here to enter that information.

† Models and pricing may vary by retailer. Please check with your retailer for specific availability and pricing.

† *as rated by engine manufacturer