B4850 Kits Part #10001389 (Legacy Part #102641) – Specialty Bracket – B4850BRPACF Bracket Kit w/ 2 – .75” thick heavy duty center brackets instead of standard .5” center brackets B4850 Kits Part #10001390 (Legacy Part #B4850HDBTSA) – Specialty Bracket – B4850BTSA Bracket Kit w/ 2 – .75” thick heavy duty center brackets instead of standard .5” center brackets B4850 Kits Part #10001392 (Legacy Part #104729) – Specialty Bracket – B4850BTPA Bracket Kit 2 – 104723, heavy duty wide trak center brackets & 4 – PB5017, 8.75” long pipe swivel brackets ← 1 2