The 4 curved mounting arms are stainless steel ,previously machine made for me years ago as trials bike rear disc and sprocket protectors,but the the rear mounting extenders/4 L brackets and plate are all alloy bits I had lying about the garage.

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2011 xt660z.
Yoshimura cans ,kev mod,Dna 2, Stahlkoffer panniers,Hepco Becker box,Givi crash bars,Mita e07 tyres.