2023 John Deere X390 54-in. deck is a powerful, versatile lawn tractor designed for homeowners with large lawns and tough terrains. Part of John Deere’s Select Series, the X390 combines precision, comfort, and durability, making it a popular choice for residential lawn care. Its 54-inch Accel Deep mower deck is engineer to provide even, smooth cuts across a range of grass types, and its deep-deck design helps lift grass for a cleaner finish with minimal clumping or buildup.