Stihl BR 450 VS BR 500 - Spec & Feature Comparison

Further down the page, you'll find some explanations regarding the key similarities and differences between the Stihl BR 450 and the Stihl BR 500.

But before checking out these explanations, here's a table that summarizes the main pros of each of these 2 leaf blowers:

Stihl BR 450	Stihl BR 500

Higher CFM Higher MPH Bigger fuel tank	Lighter Less noisy 4-Mix engine
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Common specs comparison

Belonging to the line of Stihl blowers, both the BR 450 and the BR 500 should have a shared standard of manufacturing and attention to detail. On both products, the throttle is situated on the blower tube, giving you the advantage of having your left hand available for other uses.
Engineered as backpack blowers, these two products feature sizeable engines and large fuel tanks, ensuring comfortable carrying during operation.
Both products, gas blowers, offer a swift refill system, saving you time on refueling and allowing you to efficiently manage large outdoor spaces.

In contrast, the Stihl BR 450, with its CFM of 642, outperforms the 544 CFM of the Stihl BR 500, making it the preferred option for efficiently blowing leaves away.
The Stihl BR 450 with an MPH of 219 slightly exceeds the 207 MPH of the Stihl BR 500. Thus, in comparison, the former expels air at a slightly higher speed, and should do a better job at blowing leaves on grass or lifting wet leaves and debris (acorns, etc.).

Weighing 23.4 lbs, the Stihl BR 450 tips the scales slightly above the 22.3 lbs of the Stihl BR 500, implying that while it's marginally heavier, users may still experience a touch more convenience in operation.
With a noise level of 77 dB, the Stihl BR 450 generates considerably more sound than the 65 dB of the Stihl BR 500. Opting for the latter will offer a significantly quieter experience for you and reduce potential disturbance to nearby residents.

The Stihl BR 450 features a larger fuel tank, offering 57.5 fl.oz. compared to the 47.3 fl.oz. of the Stihl BR 500. As a result, you have the advantage of storing more fuel, potentially extending runtime, assuming similar fuel consumption rates for their engines.
In contrast, the Stihl BR 450's engine, with a displacement of 63.3cc, is slightly surpassed by the 64.8cc engine of the Stihl BR 500. As a result, the latter may consume marginally more fuel per stroke, potentially resulting in a slight power advantage.
Each of these blowers requires a fuel/oil mix to operate, as the Stihl BR 450 features a 2-cycle engine, and the Stihl BR 500 is powered by the Stihl 4-Mix 4-stroke engine.