motorcycle shock absorber parts--piston, base valve, pistion rod guide , are our mainly products exported. Our factory, Ningbo Kingbell Powder Metallurgy Co., Ltd., has specialized ... Items.1.) Types of Pistons, Foot Valves, Rod Guide for Shock Absorber,2.) Types of Gears / Pinion / Sprocket / Helical Gear etc.3 ... in our products.Thank you and best regards,Mary motorcycle shock absorber parts