Thicker Steel Universal Joint Straight Shaft Portal Stub Axle Overdrive Gear for 1/10 RC Crawler Rigs Capra F9 UTB10 Replacement Hardened metal construction CNC machined Smooth action for for an efficient, higher performing drivetrain Thicker design for greater durability Fits Axial Capra Currie F9 portal axle (Recommended for use with stock Capra F9 axle housing, if you need to works with other ”Copy Capra” axle, it is not guaranteed to be perfectly compatible.) Universal Axle Set: Material: Harden Steel Quantity: 2PCS Weight: 38.5g Fits Axial Capra F9 Front Axle Straight Axle Shaft: Material: Harden Steel Quantity: 2PCS Weight: 29g Fits Axial Capra F9 Rear Axle Portal Stub Axle: Material: Harden Steel Quantity: 2PCS/4PCS Weight: 15.6g/2PCS Fits Axial Capra F9 & SCX10 III AR45P Front/Rear Axle (Notes:The thread upgraded to M5, fits wheels with 5mm center hole, stock Axial Capra wheels need to be reamed to 5mm.) 14T/21T Portal Gear Set: Material: Harden Steel Quantity: 1 Set Weight: 27g Gear Ratio: 1.50:1 Overdrive 27% 12T/23T Portal Gear Set: Material: Harden Steel Quantity: 1 Set Weight: 28g Gear Ratio: 1.92:1 Standard Ratio