Troy-Bilt Bronco™ 42 Riding Lawn Mower
Riding (Lawn Tractor) mower · Model 13A878BSA23 · Residential-duty · Gas
The Troy-Bilt Bronco 42 Riding Lawn Mower is a residential-grade gas lawn tractor, built for larger home yards, with a 42-inch deck and a 547cc engine.
At a glance
Engine
| Power Source | gas |
|---|---|
| Displacement | 33.4 ci (547 cc) |
| Engine Make | Troy-Bilt® |
| Cylinders | 1 |
| Start Type | Ignition Key |
Deck
| Cutting Width | 42 in (1067 mm) |
|---|---|
| Blades | 2 |
| Min Cut Height | 1.5 in (38 mm) |
| Max Cut Height | 3.7 in (95 mm) |
| Deck Material | 13-gauge steel |
| Deck Construction | Stamped |
| Deck Gauge | 13 |
| Cut Positions | 5 |
Drive
| Transmission | CVT |
|---|---|
| Ground Speed | 5.5 mph |
| Drive System | CVT |
| Reverse Speed | 2.5 mph |
Dimensions
| Fuel Capacity | 1.4 gal (5.2 L) |
|---|
General
| Warranty | 3 yr |
|---|
Productivity & acreage
Bronco 42 Riding Lawn Mower deck width, ground speed and computed acres-per-hour, from the specs we have. Duty class: Residential — Built for home-lawn use.
Productivity computed from deck width and ground speed. Compare on the calculator ›
| Deck width | 42 in |
|---|---|
| Engine make | Troy-Bilt® |
| Engine displacement | 547 cc |
| Engine power | not specified by manufacturer |
| Transmission | CVT |
| Drive type | not specified by manufacturer |
| Ground speed | 5.5 mph |
| Cut-height range | 38 mm – 95 mm |
| Fuel capacity | 5.15 L |
| Weight | not specified by manufacturer |
| Warranty | 3 |
| Commercial warranty | not specified by manufacturer |
| Deck construction | Stamped |
| Deck gauge | 13 ga |
| Spindle type | not specified by manufacturer |
| Frame construction | not specified by manufacturer |
| Anti-scalp rollers | not specified by manufacturer |
| Drive tire size | not specified by manufacturer |
| Seat type | not specified by manufacturer |
| Dealer network | not specified by manufacturer |
Similar models
Other riding (lawn tractor) mowers with comparable specs — including other brands — that buyers cross-shop with the Bronco 42 Riding Lawn Mower.
Specs verified against the manufacturer spec sheet on Jun 6, 2026 — troybilt.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.
Source: Troy-Bilt (manufacturer) · archived copy