:agree:303 Protectant: 303 (30313-CSR) UV Protectant Spray for Vinyl, Plastic, Rubber, Fiberglass, Leather & More - Dust and Dirt Repellant - Non-Toxic, Matte Finish, 32 Fl. oz. https://www.amazon.com/dp/B00KN0UOEE/ref=cm_sw_r_cp_apa_i_dcNlDb8ZDXKKV
Holds up well and isn't sticky.
Be aware that a lot of other products may make it shine, but there are some draw backs. First is that some products will add a coating that expanded and contracts at different rates. The end result can cause cracking. Another is that sun will whiten it, and the only way to make it look good again it to put another coating on it.My bike has black plastic parts. I wash then apply Honda spray cleaner. It looks great until it dries. After drying it’s dull looking. Any recommendations on preserving the plastic and making it shine would be greatly appreciated!