P138A-LF 38T Low Friction Pulley reduces rotational friction from belts and improves the drivetrain efficiency! It features a more precise and narrow profile for less rotating mass.

Pulley attaches via 3x SC2x4 Screws.

• Fits GD2B-R Gear Diff on A800 / A800X / A800MMX / A800R / A800FX
• Fits New Lightweight AT03RSpool but NOT Standard AT03B-X Spool