Yokomo YZ-4 SF2/Mo1 /Mo2 - HyperGlide™ Bearings - Full Kit so the outer ring is

so the outer ring is stationary

Operating Voltage：6

a fast-change battery mount

Compatible with program box only

Yokomo YZ-4 SF2/Mo1 /Mo2 - HyperGlide™ Bearings - Full Kit so the outer ring isHigh Performance Hybrid Ceramic Bearings Features: Increased Drivetrain Roll Lower Friction Cooler Temps ABEC 5 Rating Si3N4 Ceramic Balls Stainless Steel Sizes: (6) 10x15x4 (4) 5x13x4 (8) 5x10x4 Compatibility: Yokomo YZ 4 SF2 Mo1 Mo2 Our "Full Kits" DO NOT include steering bearings. We recommend every few track days to check for any necessary maintenance needs. If the bearings feel gritty or have reduced roll, remove bearings and clean with a citrus