Raceface Ambush Knee Guards L Pair MFPN=HB19A3535X820BLK This link explaining 148mm Boost

This link explaining 148mm Boost spacing will help you decide if you need the M5 or M8

55mm chainline compatibility for more moderate chain angle longer wear and greater precision

hanger # 558

This is a time tested favorite as a stand-alone when it is cold and abrasive

Raceface Ambush Knee Guards L Pair MFPN=HB19A3535X820BLK This link explaining 148mm BoostImproved comfort, temperature management, and mobility D3O T5 Evo X impact absorption that stays in place Foam padded sidewalls for additional knee coverage Perforated neoprene enhances venting and moisture control Open back design means theyre easy to slip on and off Woven upper elastic strap for personalized fit and lower arm neoprene comfort band 57% polyurethane based non woven cellular polymer, 19% nylon, 18% neoprene, 6% polyester TECH SPECS