Makwikwi chigadzirwa ( aftermarket), yemhando yakaenzana kune yekutanga uye yakabvumidzwa. Pagungano, zvinogara zvichikurudzirwa kubata vashandi vanokwanisa.

NB Mufananidzo wekushambadza unoratidza chigadzirwa chakatengeswa. Kana pane sarudzo yerutivi rwerudyi (rutivi rwemutyairi) kana ruboshwe (divi remutyairi), tarisa kune zvakanyorwa murondedzero.