Abus 90/50 KA Titalium 50mm Body with Stainless Steel Shackle https://www.amazon.com/dp/B009S5YBUS/ref=cm_sw_r_cp_api_glt_fabc_K54E5J7DTFYJZEBK970Y it will only be as good as the way its attached so I think it’s more than adequate
https://www.amazon.com/90-50-Titalium-Stainless-Shackle/dp/B009S5YBUS