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The Troy-Bilt TB120B is a gas push mower with a 140cc Briggs & Stratton 550ex engine, a 21-inch steel deck, and three cutting modes: bag, mulch, or side discharge. ReadyStart means no priming or choking, and the six-position height lever spans 1.25 to 3.75 inches. It is a basic, dependable mower for small to mid-size lawns rather than a self-propelled or electric-start machine. At $389.99 at Tractor Supply Co as of November 8, 2026, it sits at the top of its recent range, so it is not a bargain price right now.
Availability unknown
Out of stockSold by Supply the HomeReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
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Lowest price we've seen: $389.99 on Nov 8 at Tractor Supply Co. Tracked across 1 store since Nov 8.
Rated 4.6 out of 5 from 159 ratings, owners mostly report easy starting and reliable cutting for the price. Complaints center on the push-only design and the small fuel tank.
The Troy-Bilt TB120B walk behind lawn mower makes yard work easier with its reliable 140cc Briggs & Stratton engine, delivering consistent power for residential mowing tasks. This gas push mower features a 21 in. steel deck designed for durability and long-lasting performance, offering side discharge, mulching, and bagging capabilities to suit your lawn care needs. With ReadyStart technology, starting the mower is simple—no priming or choking required. The TB120B is a 4 cycle push mower, making it efficient and easy to maintain. Ideal for homeowners seeking a dependable mulcher push mower, this model is part of the trusted Troy-Bilt product line. The mower’s ergonomic design and push propulsion method provide comfortable handling, while the 21 in. cutting width covers more ground with each pass. Choose the Troy-Bilt TB120B for a versatile and powerful gas lawn mower 140cc that helps keep your yard looking its best season after season.









