Free Delivery
Free Delivery
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 UK Delivery Over £50 +VAT
Worldwide Shipping from the UK
30-Day Easy Returns
STIHL Approved Dealer
As a STIHL Approved Dealer, we supply genuine UK-spec machines with full manufacturer warranty, professional preparation, and expert aftersales support.
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 Delivery
Fast, reliable delivery from our UK warehouse.
- FREE UK Delivery on orders over £50 + VAT
Estimated delivery: 2–4 working days - UK Standard Delivery from £3.60 + VAT
Estimated delivery: 2–4 working days
- Next Working Day Delivery – £5.00 + VAT
Order before 3:00pm (Monday–Friday) for next working day delivery
All UK orders are dispatched Monday–Friday and sent via a tracked courier service.
International Delivery
We ship worldwide from the UK.
- Europe from £10.00
Estimated delivery: 2–7 working days - Rest of the World from £12.00
Estimated delivery: 2–11 working days
Shipping costs and delivery times are calculated at checkout based on destination and order contents.
Customs, Duties & Taxes
International orders may be subject to local import duties, taxes, or customs charges.
When UPS is selected at checkout, applicable duties and taxes are included in the total price. For other shipping services, duties and taxes may be charged separately on delivery and are the responsibility of the recipient.
Customs processing times may affect delivery estimates.
Returns
30-Day Return Policy
- Items can be returned within 30 days of delivery
- Products must be unused and in original condition
- Return postage costs apply unless the item is faulty or incorrect
For full details, please visit our Shipping & Returns page.
UK Delivery
Fast, reliable delivery from our UK warehouse.
- FREE UK Delivery on orders over £50 + VAT
Estimated delivery: 2–4 working days - UK Standard Delivery from £3.60 + VAT
Estimated delivery: 2–4 working days
- Next Working Day Delivery – £5.00 + VAT
Order before 3:00pm (Monday–Friday) for next working day delivery
All UK orders are dispatched Monday–Friday and sent via a tracked courier service.
International Delivery
We ship worldwide from the UK.
- Europe from £10.00
Estimated delivery: 2–7 working days - Rest of the World from £12.00
Estimated delivery: 2–11 working days
Shipping costs and delivery times are calculated at checkout based on destination and order contents.
Customs, Duties & Taxes
International orders may be subject to local import duties, taxes, or customs charges.
When UPS is selected at checkout, applicable duties and taxes are included in the total price. For other shipping services, duties and taxes may be charged separately on delivery and are the responsibility of the recipient.
Customs processing times may affect delivery estimates.
Returns
30-Day Return Policy
- Items can be returned within 30 days of delivery
- Products must be unused and in original condition
- Return postage costs apply unless the item is faulty or incorrect
For full details, please visit our Shipping & Returns page.