OVERVIEW: This Heavy Duty Steel Spur Gear is CNC machined from super-tough\nsteel for extreme durabilityFEATURES: Super-strong steel for long-lasting\ndurability in extreme RC conditions - Precision manufactured 0.8 module tooth\nconfiguration for consistent Pinion Gear mesh and operation - 57 tooth\nconfigurationYOU WILL RECEIVE: 1 x 57T HD Steel Spur GearCommentThis is a\ndirect replacment for 4S BLX only- Known to fit the following Arrma vehicle\npart numbers. -Outcast 4X4 4S BLX ARA102692- Kraton 4X4 4S BLX ARA102690For 3S\nBLX the part would fit, but require ARA310908 . - Big Rock 4X4 3S BLX:\nAR102711- Granite 4X4 3S BLX: AR102666- Granite 4X4: AR102665 (green),\nAR102676 (red)- Senton 4X4: AR102667 (red), AR102678 (blue)- Senton 4X4 3S\nBLX: AR102668- Typhon 4X4 3S BLX: AR102696