Seems like a good deal if you need them, never heard of tour max but they probably use a sourced out part. Says you get 4 for $20..not bad.
https://www.ebay.com/itm/Honda-GL1100-GL ... 5a&vxp=mtr
https://www.ebay.com/itm/Honda-GL1100-GL ... 5a&vxp=mtr