BR 450

BR 450
A professional 2-stroke blower with plenty of power to get the job done.

Product Description

Simplify your workday with this easy-to-use and affordable professional backpack blower. Equipped with a powerful 2-stroke engine, the STIHL BR 450 has all the power you need in a convenient package. Use it for a range of applications, from managing large properties and tree-heavy lots to seasonal leaf cleanup. The low-emission engine boasts high-quality power, with a blowing force approaching that of our BR 600 model. Designed with the operator in mind, the unit features an easily adjustable tube that can adapt to different operator heights and application needs. And the control handle can also be adjusted for ideal comfort without tools. Additional features include a semi-automatic choke for a simplified starting procedure as well as improved ergonomic design elements for increased user comfort. Whether maintaining residential or commercial property, the BR 450 is up to your landscaping demands.

Model Features

  • Built in the USA
    Indicates products that are built in the United States from domestic and foreign parts and components.

    More information

  • Anti-Vibration System
    The STIHL anti-vibration system helps reduce operator fatigue and provides a more comfortable working experience.
  • Multi-Function Control Handle
    Having easy access to all of the controls on one comfortable handle makes it easy to complete tasks so the operator’s hand never has to leave the handle.
  • Purge Pump Primer
    The purge pump primer feature enables the user to prime the carburetor with fuel, enabling easier starting. The purge pump primer is designed in a way that the operator cannot flood the machine by priming the carburetor too many times. Flooding the engine is still possible if the choke is not removed after the engine fires.


63.3 cc (3.86 cu. in.)
2.9 kW (3.9 bhp)
10.6 kg (23.4 lbs.)
1700 cc (57.5 oz.)
28 Newtons
83 m/sec. (186 mph)
98 m/sec. (219 mph)
1090 m3/h (642 cfm)
77 dB(A)
*Newton is the force needed to accelerate 1 kg of mass at the rate of 1 m/sec2. **Tested in accordance with ANSI B175.2 standard. All specifications provided by ANDREAS STIHL AG & Co. KG. As of April 2016.

Important Information

Note: STIHL engine products with the Caring for Nature logo are cleaner than EPA Standards for exhaust emissions.

Note: STIHL recommends use of fuel with no more than 10% Ethanol content. Using fuel with greater than 10% Ethanol content may cause damage to your equipment and may void your STIHL warranty. Learn More…

WARNING! Improper use of any power tool may cause serious or fatal injury. Read, understand and follow carefully the operating and safety instructions in your instruction manual before using such products.

STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only.


BR 450 is rated 4.8 out of 5 by 99.
Rated 1 out of 5 by from Not dependable at all Used approx 1 a week blowing off driveway and sidewalks. Within 1st month the handle came apart. Within 3 months the machine wontbrun above 1/2 throttle.
Date published: 2019-08-13
Rated 5 out of 5 by from Good blower Good blower it has plenty of power and it is a lot lighter than all the other blowers which is better for my back
Date published: 2019-07-23
Rated 5 out of 5 by from As advertised This blower is the first I have ever owned. It has more than enough power to blow any grass or leaves that I may need moved. It’s not lite but it’s not noisy either. I would purchase again.
Date published: 2019-07-21
Rated 5 out of 5 by from Another great Stihl product This blower is excellent. It has a huge amount of power, and is comfortable to wear for long periods of time. It performs so much better than my handheld blowers that it isn't even a fair comparison. They are totally different products. Handheld blowers are fine for light duty, and flat surfaces. This blower is great for everything. It blows material that is stuck in grass, bushes, cracks, rocks, and more. It blows heavy and wet material. It cleaned a rock pathway better than I ever got it with a handheld blower and broom. The yard never looked better. After mowing, there are still bits of leaves and other debris. This blower pushed most of it out of the way and left a clean looking lawn. My wife noticed the gaps in the sidewalk were clean immediately, and the rocks in the garden were clear of leaves and debris. It will blow smaller rocks around. So, I did have to put some of them back in the garden. No more raking acorns out of the yard. This thing sends them flying. There are a lot of models to choose from. I picked this one because of price, weight, fuel tank size and power. It seemed to have the best combination of those features. I wanted a blower that I could operate for extended periods over several acres without getting tired, or having to worry about fuel. There are not many cons to this unit. I wish there was a gutter attachment like the handheld units have. It stirs up more dust, and throws it higher in the air than the handheld units. Blow with the direction of the wind, or you get dust in your face. Every time I replace a consumer product with a Stihl, I wish I had done it sooner. This is no exception. The improved efficiency of working is worth every penny. I get done faster, and the results are better. I actually enjoy using the product.
Date published: 2019-07-08
Rated 3 out of 5 by from needs to be ergonomically tested straps need longer cushions..Buckles get caught in armpits and pinch. Comfort level poor unless your 5'5" and slim
Date published: 2019-04-17
Rated 5 out of 5 by from The blower has the power for leaf removal that I expected. Overall a great product. However it would be nice to have a shut off pet cock on the gas line so it would be easier to remove the fuel from the unit carburetor without removing the entire gas from the gas tank and then running the blower to remove the fuel from the unit.I like to remove all my fuel in the unit when I store it between use.
Date published: 2019-04-02
Rated 5 out of 5 by from Hands down, simply the best Airflow is outstanding! I've never had such a powerhouse! Starts easily, stores easily, easy to fill fuel, lightweight and compact! Love all my Stihl Power products!
Date published: 2019-03-25
Rated 4 out of 5 by from This blower has a lot of power. I have an acre of cleared land with 500 feet of ditch along the road surrounded by woods. The cleared area and ditch were full of several years of accumulated wet leaves because it was just too much to rake or blow with an electric blower. The Stihl 450 made very short work of clearing away all of it. It starts easily and has a lot of power. I only have one negative comment and it is the same one made by many others about the Stihl backpack blowers. The shoulder straps will not stay on my shoulders and it becomes annoying. I have fairly broad shoulders and I just don't understand why Stihl has not added a chest strap to solve this design flaw after so many similar comments.
Date published: 2019-01-30
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Standard Features

  • Common Features for Backpack Blowers
    View the features common to many STIHL backpack blowers.

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