How to Fix a Curt Bike Rack Hold-Down Hook That Won't Stay Tight  

Thanks, at least that's an option but at about a 1/4 of what I paid for the entire rack, is a little unreasonable especially given the long arm is $31. Would be nice if you could just buy the plastic teeth, a small and inexpensive part. I've figured out some workarounds. 1. Remove the center column, flip it 180 degrees on the y axis and use the opposite arm. or 2. Slide a thin piece of metal down between the arm and the column, opposite the grooves, which forces the worn teeth further into the grooves. 3. Use the 2nd arm butted up on top of the securing arm giving it twice the locking strength and 4. Just hold the lock handle/button down from the getgo when sliding the arm into position as that is when all the wear is happening.

I had a similar situation in the last year or so with the same Curt rack purchased in 2021, the rack has accrued 60,000+ loaded miles ... being an avid cyclist I had worn out the long arm, where my default bike normally lives. Replaced it with a new unit. From etrailer of course. I should have replaced both of them .... new unit is keyed differently, so now need 2 keys ... within a month or so of replacing the long arm the short arm ratchet packed it in .... blessedly the new short arm is keyed same as the recently replaced long arm. Buy them both and save yourself some aggravation .... on balance the arm is way cheaper than one the MAXXIS tires on my MTN bike.... and they only last me 18 months or so. Ride ON!