I think Woodcraft makes the cheapest not Ebay Chinese cliip ons. I think I recall them being 2 piece clamps so installing them yourself should be a piece of cake.
06 Paul Smart Sport Classic NFS ever.
08 S4RS Tricolore #081 NFS ever.
01 M600, aka, The Pink Monster
72 Norton Commando 750
03 KX60 just rebuilt the entire engine, with M600 rear shock, no wait now with S4RS rear shock...
Honda CB350F, Hodaka Ace90, 3x Yam-YGS1, Yam-CS3 200, Vespa small frame, Gilera 106, Puch Sabre, Puch 50 Boy Racer, Ducati 250 bevel, Benelli 250, Benelli 360, recently added a Honda CB350T, and many more.