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Looking For Replacement Knob For Curt Spectrum Brake Controller  

Updated 08/25/2026 | Published 08/18/2026

Question:

I have lost the knob that goes on the shaft of the Spectrum Integrated Proportional Trailer Brake Controller 51170. Is there an available replacement? The knob comes of the shaft easily and one day I noticed mine is gone.

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Expert Reply:

Hey Ben, thanks for reaching out. We do have a replacement knob assembly, part # C65RV you can use to replace the knob on your Curt Spectrum brake controller. Curt doesn't offer just the knob by itself, so this assembly will be your best bet for replacing it.

What kind of trailer do you usually tow?

expert reply by:
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Jesse M
Replacement Knob Assembly for Curt Spectrum Brake Controller
Replacement Knob Assembly for Curt Spectrum Brake Controller
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