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Lawn Tractor · 1958Unverified

Simplicity 450

Name: Simplicity 450
Brand: Simplicity

Simplicity 450 — Wonder Boy Series · 5 hp. Reference specifications; pending source verification.

The Simplicity 450 is a lawn tractor with a rated power of 5 hp, positioned at the lighter end of its class. It was manufactured from 1958 to 1959. The model features a 1-cylinder petrol air-cooled engine, paired with two-wheel drive and a 2-speed gearbox. It is suitable for operations covering up to 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

5 hp

Catalogue coverage

Variants represented

Richest spec table

33 rows

Recorded power

5 hp

Transmissions

2-speed gear

Production years

1958-1959

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerSimplicityReference

Riding lawn mowerReference

Built in Port Washington, Wisconsin, USAReference

Original price was $290 in 1960Reference

Two-wheel driveReference

Manual steeringReference

Open operator station.Reference

Engine

4.5HP Briggs & Stratton 231cc 1-cyl gasolineReference

Briggs & Stratton 141302Reference

gasolineReference

1-cylinderReference

air-cooledReference

Displacement14.1 ciReference

Bore/Stroke70 x 60 mmReference

Power (gross)3.4 kWReference

Startermanual recoilReference

StarterelectricReference

Starter volts12Reference

Transmission

2-speed gearReference

Typebelt-driven gearReference

Gears2 forward and reverseReference

Dimensions

Front tire10x2.50Reference

Rear tire4.00x8Reference

Lawn/turf front10x2.50Reference

Lawn/turf rear4.00x8Reference

Simplicity 450 attachments

24" mid-mount mower deckReference

bladeReference

Attachment overview

24" mid-mount mower deckReference

BladeReference

24" Mower deck

Typemid-mount Simplicity 990122Reference

Type1-blade with manual liftReference

Cutting width60 cmReference

Cut height3 to 8 cmReference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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