Seasons of long climbs and steady miles leave one side of a pedal feeling rougher underfoot than the other, and the Assioma PRO RS Pedal Body is the Favero replacement pedal body that restores that side. Left or right, only the worn side of Favero Assioma PRO RS power meter pedals gets rebuilt, because the spindle stays on the crank. The SPD-SL compatible platform brings back the clip-in the pedal started with. What Our Gearhead(R) Experts Are Saying:"I replaced one worn side at the bench and found everything I needed in the box, greasing tool included. The pedal spun smoothly afterward, and a single body cost far less than new pedals."