SR 450 Petrol Backpack Mist Blower
SKU: Stihl | SR-4244 011 2641
- Regular price
- £650.96 Ex VAT
- £781.15 Inc VAT
- RRP: £786.67 Ex VAT
- Sale price
- £650.96 £650.96 Ex VAT
- Regular price
-
- £781.15 £781.15 Inc VAT
- Was £786.67 Ex VAT
Free Standard UK Delivery Over £75 +VAT
Easy Returns
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Product information & specifications
STIHL SR 450 Petrol Backpack Mist Blower
The STIHL SR 450 Petrol Backpack Mist Blower is a high-performance, professional-grade tool designed for precise spraying of liquids over large areas. Equipped with a 63.3 cm³ 2-MIX engine, the SR 450 delivers reliable, consistent power for horticultural, agricultural, and pest control applications.
Its ergonomic padded harness and lightweight design ensure comfortable operation during extended periods, while the adjustable nozzle and flow control provide precise and efficient application of fertilizers, pesticides, and other treatments.
Key Features:
- STIHL 2-MIX engine – delivers powerful performance with reduced fuel consumption and lower emissions.
- Adjustable nozzle – allows precise control of spray pattern and reach for targeted application.
- Ergonomic harness and straps – provides comfort and reduces fatigue during extended use.
- Lightweight design – ideal for long spraying sessions.
- Reliable pump system – ensures consistent liquid delivery for professional use.
- Durable construction – built to withstand demanding agricultural and horticultural environments.
Technical Specifications:
| Specification | Details |
|---|---|
| Brand | STIHL |
| Product Type | Petrol Backpack Mist Blower |
| Engine Displacement | 6.3 cm³ |
| Weight | Approx. 12.8 kg |
| Tank Capacity | 14 litres |
| Flow Rate | 1.2–1.6 L/min |
| Tank Capacity | 17 litres |
| Sound Pressure Level | 101 dB(A) |
Recommended Accessories:
- STIHL Fuel & Oil – for consistent engine performance and longevity.
- Protective Equipment – gloves, goggles, and hearing protection.
- STIHL Mist Blower Accessories – replacement nozzles, tanks, and hoses for added versatility.
The STIHL SR 450 is perfect for professionals seeking reliable, powerful, and precise mist blowing capabilities. Its combination of engine performance, ergonomic comfort, and accurate spray control makes it an essential tool for horticultural, agricultural, and pest control applications.
Blower Technical Data
| Horizontal spray width | 14.5 |
|---|---|
| Tank volume | 1.70 |
| Performance kW | 2.9 |
| Capacity cm³ | 63.3 |
| CO² g/kWh | 977 |
| STIHL anti-vibration system | Yes |
| Max.air throughput (m³/h) | 1300 |
| Air throughput (m³/h) with round nozzle/flat nozzle | 920 |
| Vibration level, right (m/s²) | 1.9 |
| Sound power level (dB(A)) | 109 |
| Sound pressure level (dB(A)) | 101 |
| Weight (kg) | 12.8 |
STIHL SR 450 Petrol Backpack Mist Blower
The STIHL SR 450 Petrol Backpack Mist Blower is a high-performance, professional-grade tool designed for precise spraying of liquids over large areas. Equipped with a 63.3 cm³ 2-MIX engine, the SR 450 delivers reliable, consistent power for horticultural, agricultural, and pest control applications.
Its ergonomic padded harness and lightweight design ensure comfortable operation during extended periods, while the adjustable nozzle and flow control provide precise and efficient application of fertilizers, pesticides, and other treatments.
Key Features:
- STIHL 2-MIX engine – delivers powerful performance with reduced fuel consumption and lower emissions.
- Adjustable nozzle – allows precise control of spray pattern and reach for targeted application.
- Ergonomic harness and straps – provides comfort and reduces fatigue during extended use.
- Lightweight design – ideal for long spraying sessions.
- Reliable pump system – ensures consistent liquid delivery for professional use.
- Durable construction – built to withstand demanding agricultural and horticultural environments.
Technical Specifications:
| Specification | Details |
|---|---|
| Brand | STIHL |
| Product Type | Petrol Backpack Mist Blower |
| Engine Displacement | 6.3 cm³ |
| Weight | Approx. 12.8 kg |
| Tank Capacity | 14 litres |
| Flow Rate | 1.2–1.6 L/min |
| Tank Capacity | 17 litres |
| Sound Pressure Level | 101 dB(A) |
Recommended Accessories:
- STIHL Fuel & Oil – for consistent engine performance and longevity.
- Protective Equipment – gloves, goggles, and hearing protection.
- STIHL Mist Blower Accessories – replacement nozzles, tanks, and hoses for added versatility.
The STIHL SR 450 is perfect for professionals seeking reliable, powerful, and precise mist blowing capabilities. Its combination of engine performance, ergonomic comfort, and accurate spray control makes it an essential tool for horticultural, agricultural, and pest control applications.
Blower Technical Data
| Horizontal spray width | 14.5 |
|---|---|
| Tank volume | 1.70 |
| Performance kW | 2.9 |
| Capacity cm³ | 63.3 |
| CO² g/kWh | 977 |
| STIHL anti-vibration system | Yes |
| Max.air throughput (m³/h) | 1300 |
| Air throughput (m³/h) with round nozzle/flat nozzle | 920 |
| Vibration level, right (m/s²) | 1.9 |
| Sound power level (dB(A)) | 109 |
| Sound pressure level (dB(A)) | 101 |
| Weight (kg) | 12.8 |
STIHL Warranty
STIHL offer a 1 year professional warranty or 2 year domestic warranty with all of their machines.
The following exceptions apply:
- AK System, AS System and AI Line cordless products aren't covered under warranty when used by professionals
- AP System machines, batteries and chargers - 2 year professional warranty
- Pressure washers - 2 year professional warranty or 3 year domestic warranty
- Mowers, tillers, shredders, scarifiers & iMOW machines - See STIHL's website here
Extend your Stihl warranty by an additional year when purchasing a STIHL Smart Connector with selected machinery from the petrol and cordless range. Extends your petrol warranty from 1 to 2 years AND 2 to 3 years on select cordless tools.
STIHL offer a 1 year professional warranty or 2 year domestic warranty with all of their machines.
The following exceptions apply:
- AK System, AS System and AI Line cordless products aren't covered under warranty when used by professionals
- AP System machines, batteries and chargers - 2 year professional warranty
- Pressure washers - 2 year professional warranty or 3 year domestic warranty
- Mowers, tillers, shredders, scarifiers & iMOW machines - See STIHL's website here
Extend your Stihl warranty by an additional year when purchasing a STIHL Smart Connector with selected machinery from the petrol and cordless range. Extends your petrol warranty from 1 to 2 years AND 2 to 3 years on select cordless tools.
Delivery & Returns
UK Standard Delivery from - £3.60
Estimated delivery 2-4 days
Free Delivery available for orders above £75+ VAT
Estimated delivery 2-4 days
Next Day Delivery - £7.99
Estimated delivery 1 day when ordered before 3PM Monday - Friday
International Delivery Europe from - £10.00
Estimated delivery 2-7 days
International Delivery Rest of the World from - £12.00
Estimated delivery 2-11 days
Returns
30-Day Return Policy
For more information on shipping options, visit our shipping page here.
UK Standard Delivery from - £3.60
Estimated delivery 2-4 days
Free Delivery available for orders above £75+ VAT
Estimated delivery 2-4 days
Next Day Delivery - £7.99
Estimated delivery 1 day when ordered before 3PM Monday - Friday
International Delivery Europe from - £10.00
Estimated delivery 2-7 days
International Delivery Rest of the World from - £12.00
Estimated delivery 2-11 days
Returns
30-Day Return Policy
For more information on shipping options, visit our shipping page here.

