Bill's Service Center sells parts for Troy-Bilt lawn and garden equipment, such as lawn mowers, riding mowers, lawn tractors, snow blowers, tillers and zero-turn radius (ZTR) mowers. The Troy-Bilt brand was acquired by MTD in 2001, along with the Bolens brand, when Garden Way filed for bankruptcy.

Most Troy-Bilt / MTD model numbers are formatted with three digits, sometimes a dash, then several numbers and letters, such as 11A-436N211 or 13A277BS066.