High output engines require high end parts. For these specific engines, like motocross and ATV engines we offer flat silver big end cages. These bearings are able to cope with the high rpm?s of these applications. For all other applications we offer high quality M-style cages.; ProX Racing Parts headquarters are located near Amsterdam, The Netherlands. Founded in 1975, ProX Racing Parts is now distributed in a significant number of countries worldwide. Domestic as well as international dealers and distributors are being served from our facilities in Nieuw Vennep Netherlands, Mentor Ohio, and Woodstock Ontario Canada.