These insert into the idler gear inside the differential

and realism to terrain contours on layouts of any scale size

Genuine Losi part LOS252061

Losi 5IVE Mini WRC – PHB5670

Race and Training mode

Vanquish VPS02410 Clamping 25T Servo Horn - 24mm Inferno MP9 Parts These insert into the idlerVanquish VPS02410 Clamping 25T Servo Horn 24mm Vanquish Products Clamping Servo Horn 25T (25 tooth servo spline)* 24mm from center of servo output to center of outward most hole Milled from high quality aluminum Unique clamping style keeps splines more engaged on the servo output *Check manufacturers specs to find what servo spline you need.