https://www.classicengineparts.co.uk/products/cep-srg-w-mw104f-104_tooth_starter_ring_gear_for_-cep_srg_w_mw104f
CEP SRG W MW104F: 104 tooth Starter Ring Gear, 0.480" thick, with an outer diameter of 13.16 for...
High carbon steel Starter Ring Gear with hardened and tempered or flame-hardened teeth. Please count the number of teeth on your current flywheel and measure th