Shop › Redcat MT-18/Ascent-18 7x11x3mm Ball Bearings (2) Redcat MT-18/Ascent-18 7x11x3mm Ball Bearings (2) $7.99 Redcat 7x11x3mm Ball Bearings. These are used in the inner pinion gear position. Package includes two bearings. Redcat 7x11x3mm Ball Bearings. These are used in the inner pinion gear position. Package includes two bearings. Add To Cart Added!