• one bolt jobs with cylindrical clamp

    Like this? It's a Toseek, I got it via Amazon but they are on eBay and AliX too. You'll want to change the stock bolt to one about 5mm shorter. Has survived about 30 miles with >100kg load so far. On the other hand, if you want to play safe, a Kalloy SP248 is half the price and less than 1/4lb heavier.

  • Yes, that clamp design but cylindrical all the way up rather than with the aero portion. Thanks for the recommendation!

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