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COMING SOON
MS 300 C-M Petrol Chainsaw
SKU: Stihl | MS-MB02 200 0000
Key Features
- 50.2cc M-Tronic engine, 3.0kW, 4.9kg
- Electronic engine management, no manual tuning
- Ematic lubrication, HD2 air filter
- 35-45cm bar, .325in RS Pro chain
STIHL Approved Dealer
As a STIHL Approved Dealer, we supply genuine UK-spec machines with full manufacturer warranty, professional preparation, and expert aftersales support.
- Regular price
- £771.37 Ex VAT
- £925.64 Inc VAT
- RRP: £907.50 Ex VAT
- Sale price
- £771.37 £771.37 Ex VAT
- Regular price
-
- £925.64 £925.64 Inc VAT
Free Delivery Over £75 *
Worldwide Shipping from the UK
Trusted UK Arborist Retailer
30-Day Easy Returns
Product information & specifications
STIHL MS 300 C-M Professional Petrol Forestry Chainsaw - 53.2cc 3.3 kW MS 261 Replacement
⚠ Launching September 2026. Contact Gustharts to pre-order and secure your allocation. Units dispatched immediately on release.
Free Spare Chain Available
Worth £20–£40 depending on model
When you add this STIHL chainsaw to your cart, your free matching chain will appear automatically. Simply click "Add Free Item" in the cart to include it with your order.
- Matching chain for this model
- Ideal for quick swaps on the job
- Helps reduce downtime
Your free chain will appear in the cart — just click "Add Free Item" before checkout.
The STIHL MS 300 C-M is the direct replacement for the STIHL MS 261 C-M — a completely redesigned professional petrol forestry chainsaw delivering 53.2 cc displacement, 3.3 kW power and 15% more torque than the MS 261 C-M, in a compact body weighing just 4.85 kg without fuel, bar or chain. Designed for foresters, arborists and land management professionals who fell and process medium-sized trees daily, the MS 300 C-M combines STIHL's latest M-Tronic 3 automatic carburettor management with the fuel-efficient 2-MIX engine for fast acceleration, easy starting and consistent power delivery across a full working day. Low gyroscopic forces, a compact body and improved rear handle geometry make felling, limbing, snedding and plunge cutting more comfortable and controlled. Available to pre-order now from Gustharts, an authorised STIHL dealer, with UK stock at the September 2026 launch.
Key Features
- 53.2 cc 2-MIX engine, 3.3 kW — more displacement and more power than the MS 261 C-M in a lighter, more compact body
- 15% more torque than MS 261 C-M — feels less pressure-sensitive in larger timber; reduces the chance of bogging down mid-cut
- 4.85 kg powerhead weight — lighter than the MS 261 despite the larger engine displacement and power output
- M-Tronic 3 automatic carburettor management — continuously adjusts fuel delivery for altitude, temperature and load; eliminates manual carburettor adjustment and supports easy starting in all conditions
- Fast acceleration — responsive power delivery from idle to full throttle for efficient felling and processing
- Low gyroscopic forces and compact body — improved handling balance and manoeuvrability during felling, limbing, snedding and plunge cutting
- Felling line on top cover — guides accurate directional felling cuts; particularly helpful when learning or refining felling technique
- Two plunge-cutting direction lines on fan housing — run parallel to the chain and bar for controlled bore and plunge cuts
- HD2 air filter — larger surface area than the MS 261's filter; reduces maintenance intervals and downtime in dusty conditions
- 50% fuel marker on petrol tank — instant visual indication of fuel level without removing the cap
- Optimised rib pattern on underside of powerhead — helps the saw glide along the trunk during snedding for reduced resistance and operator effort
- Improved oil pump access — oil flow adjustment using a standard combination tool; no specialist tools required
- Captive sprocket cover nut (C designation) — prevents nut loss during bar and chain changes in the field
Technical Specification
| Brand | STIHL |
|---|---|
| Model | MS 300 C-M |
| Engine Type | 2-MIX petrol (single-cylinder, air-cooled 2-stroke with scavenging air layer) |
| Displacement | 53.2 cc |
| Power Output | 3.3 kW |
| Carburettor System | M-Tronic 3 (automatic electronic carburettor management) |
| Weight (bare powerhead) | 4.85 kg (without fuel, guide bar, chain or oil) |
| Power-to-Weight Ratio | 1.46 kg/kW |
| Torque vs MS 261 C-M | +15% |
| Vibration — Left Handle | 4.2 m/s² |
| Vibration — Right Handle | 4.2 m/s² |
| Sound Pressure Level | 105 dB(A) |
| Sound Power Level | 119 dB(A) |
| Air Filter | HD2 — larger surface area for extended service intervals |
| Oil Pump | Adjustable — accessible with standard combination tool |
| Guide Bar Length | 14", 16", 18" |
| Chain Pitch | |
| Replaces | STIHL MS 261 C-M |
| Availability | Launching September 2026 |
M-Tronic 3 and the 2-MIX Engine — What They Mean in Practice
M-Tronic 3 is STIHL's third-generation electronic carburettor management system. Unlike a conventional manually-adjusted carburettor, M-Tronic continuously monitors engine performance and adjusts fuel delivery in real time to compensate for changes in altitude, temperature and air density. The practical result is that the MS 300 C-M starts easily in cold and warm conditions, maintains consistent power at altitude, and does not require the seasonal or altitude-based carburettor adjustments that a manual system needs. M-Tronic 3 also delivers faster throttle response than previous generations, contributing to the MS 300's responsive acceleration characteristic.
2-MIX is STIHL's scavenging-air-layer 2-stroke engine technology. A layer of fresh air separates the incoming fuel-air mixture from the exhaust gases in the cylinder during the scavenging phase, reducing short-circuit losses (where unburnt fuel exits with exhaust) without the complexity and weight of a 4-stroke engine. The result is improved fuel efficiency and lower exhaust emissions compared to a conventional 2-stroke, with the power-to-weight advantage of a 2-stroke architecture maintained.
MS 300 C-M vs MS 261 C-M - Key Improvements
The MS 300 C-M is not an incremental update — it is a ground-up redesign of the professional 50cc class chainsaw. Here are the key differences for existing MS 261 C-M users.
| Feature | MS 261 C-M | MS 300 C-M (replacement) |
|---|---|---|
| Displacement | 50.2 cc | 53.2 cc — 6% larger |
| Power output | ~2.6 kW | 3.3 kW |
| Torque | Standard | +15% — less pressure-sensitive in larger timber |
| Weight (bare) | ~4.9 kg | 4.85 kg — lighter despite larger displacement |
| M-Tronic version | M-Tronic 1 | M-Tronic 3 — faster response, improved management |
| Air filter | HD2 standard | HD2 — larger surface area; extended service intervals |
| Felling guides | Single felling line | Felling line + two plunge-cutting direction lines |
| Fuel level indicator | Standard tank | 50% marker for instant visual fuel level check |
| Snedding design | Standard underside | Optimised rib pattern for reduced trunk-glide resistance |
For current MS 261 C-M users, the upgrade case is straightforward: more power, more torque, lighter weight and a more capable M-Tronic system in a directly comparable professional package. The MS 300 C-M is not simply a renamed MS 261 — it is a significantly improved saw in every meaningful metric. See parts and accessories for the MS 261 C-M here.
Important Use Guidance
Professional chainsaw PPE is required at all times. The MS 300 C-M is a professional-grade petrol chainsaw. Use requires certified chainsaw protective trousers (EN ISO 11393-2), chainsaw boots, a helmet with integrated face shield and hearing protection, and chainsaw gloves appropriate to the application. At 105 dB(A) sound pressure, the MS 300 C-M requires hearing protection rated for this exposure level on every use.
Vibration levels of 4.2 m/s² on both handles. At this level, professional operators should be aware of daily vibration exposure limits under the Control of Vibration at Work Regulations 2005. The EAV (Exposure Action Value) is 2.5 m/s², and the ELV (Exposure Limit Value) is 5 m/s². Track daily usage time against vibration exposure and rest hands and arms appropriately.
M-Tronic 3 does not require manual carburettor adjustment — the system manages this automatically. Attempting to adjust the carburettor manually on an M-Tronic saw will override the system and may cause running issues. Follow the STIHL manual for M-Tronic operation and starting procedures.
Also Known As
The STIHL MS 300 C-M is also referred to as the STIHL MS 300, MS300 C-M, STIHL 300 chainsaw, STIHL 53cc chainsaw and MS 261 replacement chainsaw. The "C-M" designation identifies the captive sprocket cover nut ("C") and M-Tronic electronic carburettor management ("M"). An MS 300 C-M VW variant with heated handles is also available. For ordering, reference the STIHL MS 300 C-M from Gustharts. Launching September 2026.
Pairs Well With
- STIHL 2-Stroke Oil (HP Super) — the ALLPRO AP 200 P in STIHL HP Super 2-stroke oil is the recommended fuel mix for the MS 300 C-M's 2-MIX engine at 50:1
- Chainsaw Protective Trousers — EN ISO 11393-2 certified leg protection required for all chainsaw operation
- Chainsaw Helmet Systems — integrated face, visor and hearing protection for the MS 300 C-M's 105 dB(A) sound pressure level
- Sharpening and Maintenance Tools — keep chains sharp and the HD2 filter clean to maintain the MS 300's performance between service intervals
Explore More
FAQs
When is the STIHL MS 300 C-M available?
The MS 300 C-M launches September 2026 across European markets as the direct replacement for the MS 261 C-M. Contact Gustharts to pre-order and confirm your allocation ahead of the launch date.
Does the MS 300 C-M directly replace the MS 261 C-M?
Yes. STIHL has confirmed the MS 300 C-M is the direct successor to the MS 261 C-M. It offers more displacement (53.2 cc vs 50.2 cc), more power (3.3 kW), 15% more torque and a lighter body, making it an upgrade in every performance metric.
What is M-Tronic 3 and how is it different from previous versions?
M-Tronic 3 is STIHL's latest generation of automatic electronic carburettor management. It delivers faster throttle response and more precise fuel delivery adjustment for altitude and temperature than M-Tronic 1 used in the MS 261 C-M. It eliminates manual carburettor adjustment entirely.
What is the vibration level of the MS 300 C-M?
4.2 m/s² on both handles. Professional operators should track daily vibration exposure against the Control of Vibration at Work Regulations 2005 EAV (2.5 m/s²) and ELV (5 m/s²) and manage working time accordingly.
What is the 2-MIX engine and why does it matter?
2-MIX is STIHL's scavenging air layer 2-stroke technology. It reduces short-circuit fuel losses — where unburnt fuel exits with exhaust — improving fuel efficiency and reducing emissions compared to a conventional 2-stroke. The power-to-weight advantage of the 2-stroke design is retained while fuel consumption and exhaust output are reduced.
STIHL MS 300 C-M Professional Petrol Forestry Chainsaw - 53.2cc 3.3 kW MS 261 Replacement
⚠ Launching September 2026. Contact Gustharts to pre-order and secure your allocation. Units dispatched immediately on release.
Free Spare Chain Available
Worth £20–£40 depending on model
When you add this STIHL chainsaw to your cart, your free matching chain will appear automatically. Simply click "Add Free Item" in the cart to include it with your order.
- Matching chain for this model
- Ideal for quick swaps on the job
- Helps reduce downtime
Your free chain will appear in the cart — just click "Add Free Item" before checkout.
The STIHL MS 300 C-M is the direct replacement for the STIHL MS 261 C-M — a completely redesigned professional petrol forestry chainsaw delivering 53.2 cc displacement, 3.3 kW power and 15% more torque than the MS 261 C-M, in a compact body weighing just 4.85 kg without fuel, bar or chain. Designed for foresters, arborists and land management professionals who fell and process medium-sized trees daily, the MS 300 C-M combines STIHL's latest M-Tronic 3 automatic carburettor management with the fuel-efficient 2-MIX engine for fast acceleration, easy starting and consistent power delivery across a full working day. Low gyroscopic forces, a compact body and improved rear handle geometry make felling, limbing, snedding and plunge cutting more comfortable and controlled. Available to pre-order now from Gustharts, an authorised STIHL dealer, with UK stock at the September 2026 launch.
Key Features
- 53.2 cc 2-MIX engine, 3.3 kW — more displacement and more power than the MS 261 C-M in a lighter, more compact body
- 15% more torque than MS 261 C-M — feels less pressure-sensitive in larger timber; reduces the chance of bogging down mid-cut
- 4.85 kg powerhead weight — lighter than the MS 261 despite the larger engine displacement and power output
- M-Tronic 3 automatic carburettor management — continuously adjusts fuel delivery for altitude, temperature and load; eliminates manual carburettor adjustment and supports easy starting in all conditions
- Fast acceleration — responsive power delivery from idle to full throttle for efficient felling and processing
- Low gyroscopic forces and compact body — improved handling balance and manoeuvrability during felling, limbing, snedding and plunge cutting
- Felling line on top cover — guides accurate directional felling cuts; particularly helpful when learning or refining felling technique
- Two plunge-cutting direction lines on fan housing — run parallel to the chain and bar for controlled bore and plunge cuts
- HD2 air filter — larger surface area than the MS 261's filter; reduces maintenance intervals and downtime in dusty conditions
- 50% fuel marker on petrol tank — instant visual indication of fuel level without removing the cap
- Optimised rib pattern on underside of powerhead — helps the saw glide along the trunk during snedding for reduced resistance and operator effort
- Improved oil pump access — oil flow adjustment using a standard combination tool; no specialist tools required
- Captive sprocket cover nut (C designation) — prevents nut loss during bar and chain changes in the field
Technical Specification
| Brand | STIHL |
|---|---|
| Model | MS 300 C-M |
| Engine Type | 2-MIX petrol (single-cylinder, air-cooled 2-stroke with scavenging air layer) |
| Displacement | 53.2 cc |
| Power Output | 3.3 kW |
| Carburettor System | M-Tronic 3 (automatic electronic carburettor management) |
| Weight (bare powerhead) | 4.85 kg (without fuel, guide bar, chain or oil) |
| Power-to-Weight Ratio | 1.46 kg/kW |
| Torque vs MS 261 C-M | +15% |
| Vibration — Left Handle | 4.2 m/s² |
| Vibration — Right Handle | 4.2 m/s² |
| Sound Pressure Level | 105 dB(A) |
| Sound Power Level | 119 dB(A) |
| Air Filter | HD2 — larger surface area for extended service intervals |
| Oil Pump | Adjustable — accessible with standard combination tool |
| Guide Bar Length | 14", 16", 18" |
| Chain Pitch | |
| Replaces | STIHL MS 261 C-M |
| Availability | Launching September 2026 |
M-Tronic 3 and the 2-MIX Engine — What They Mean in Practice
M-Tronic 3 is STIHL's third-generation electronic carburettor management system. Unlike a conventional manually-adjusted carburettor, M-Tronic continuously monitors engine performance and adjusts fuel delivery in real time to compensate for changes in altitude, temperature and air density. The practical result is that the MS 300 C-M starts easily in cold and warm conditions, maintains consistent power at altitude, and does not require the seasonal or altitude-based carburettor adjustments that a manual system needs. M-Tronic 3 also delivers faster throttle response than previous generations, contributing to the MS 300's responsive acceleration characteristic.
2-MIX is STIHL's scavenging-air-layer 2-stroke engine technology. A layer of fresh air separates the incoming fuel-air mixture from the exhaust gases in the cylinder during the scavenging phase, reducing short-circuit losses (where unburnt fuel exits with exhaust) without the complexity and weight of a 4-stroke engine. The result is improved fuel efficiency and lower exhaust emissions compared to a conventional 2-stroke, with the power-to-weight advantage of a 2-stroke architecture maintained.
MS 300 C-M vs MS 261 C-M - Key Improvements
The MS 300 C-M is not an incremental update — it is a ground-up redesign of the professional 50cc class chainsaw. Here are the key differences for existing MS 261 C-M users.
| Feature | MS 261 C-M | MS 300 C-M (replacement) |
|---|---|---|
| Displacement | 50.2 cc | 53.2 cc — 6% larger |
| Power output | ~2.6 kW | 3.3 kW |
| Torque | Standard | +15% — less pressure-sensitive in larger timber |
| Weight (bare) | ~4.9 kg | 4.85 kg — lighter despite larger displacement |
| M-Tronic version | M-Tronic 1 | M-Tronic 3 — faster response, improved management |
| Air filter | HD2 standard | HD2 — larger surface area; extended service intervals |
| Felling guides | Single felling line | Felling line + two plunge-cutting direction lines |
| Fuel level indicator | Standard tank | 50% marker for instant visual fuel level check |
| Snedding design | Standard underside | Optimised rib pattern for reduced trunk-glide resistance |
For current MS 261 C-M users, the upgrade case is straightforward: more power, more torque, lighter weight and a more capable M-Tronic system in a directly comparable professional package. The MS 300 C-M is not simply a renamed MS 261 — it is a significantly improved saw in every meaningful metric. See parts and accessories for the MS 261 C-M here.
Important Use Guidance
Professional chainsaw PPE is required at all times. The MS 300 C-M is a professional-grade petrol chainsaw. Use requires certified chainsaw protective trousers (EN ISO 11393-2), chainsaw boots, a helmet with integrated face shield and hearing protection, and chainsaw gloves appropriate to the application. At 105 dB(A) sound pressure, the MS 300 C-M requires hearing protection rated for this exposure level on every use.
Vibration levels of 4.2 m/s² on both handles. At this level, professional operators should be aware of daily vibration exposure limits under the Control of Vibration at Work Regulations 2005. The EAV (Exposure Action Value) is 2.5 m/s², and the ELV (Exposure Limit Value) is 5 m/s². Track daily usage time against vibration exposure and rest hands and arms appropriately.
M-Tronic 3 does not require manual carburettor adjustment — the system manages this automatically. Attempting to adjust the carburettor manually on an M-Tronic saw will override the system and may cause running issues. Follow the STIHL manual for M-Tronic operation and starting procedures.
Also Known As
The STIHL MS 300 C-M is also referred to as the STIHL MS 300, MS300 C-M, STIHL 300 chainsaw, STIHL 53cc chainsaw and MS 261 replacement chainsaw. The "C-M" designation identifies the captive sprocket cover nut ("C") and M-Tronic electronic carburettor management ("M"). An MS 300 C-M VW variant with heated handles is also available. For ordering, reference the STIHL MS 300 C-M from Gustharts. Launching September 2026.
Pairs Well With
- STIHL 2-Stroke Oil (HP Super) — the ALLPRO AP 200 P in STIHL HP Super 2-stroke oil is the recommended fuel mix for the MS 300 C-M's 2-MIX engine at 50:1
- Chainsaw Protective Trousers — EN ISO 11393-2 certified leg protection required for all chainsaw operation
- Chainsaw Helmet Systems — integrated face, visor and hearing protection for the MS 300 C-M's 105 dB(A) sound pressure level
- Sharpening and Maintenance Tools — keep chains sharp and the HD2 filter clean to maintain the MS 300's performance between service intervals
Explore More
FAQs
When is the STIHL MS 300 C-M available?
The MS 300 C-M launches September 2026 across European markets as the direct replacement for the MS 261 C-M. Contact Gustharts to pre-order and confirm your allocation ahead of the launch date.
Does the MS 300 C-M directly replace the MS 261 C-M?
Yes. STIHL has confirmed the MS 300 C-M is the direct successor to the MS 261 C-M. It offers more displacement (53.2 cc vs 50.2 cc), more power (3.3 kW), 15% more torque and a lighter body, making it an upgrade in every performance metric.
What is M-Tronic 3 and how is it different from previous versions?
M-Tronic 3 is STIHL's latest generation of automatic electronic carburettor management. It delivers faster throttle response and more precise fuel delivery adjustment for altitude and temperature than M-Tronic 1 used in the MS 261 C-M. It eliminates manual carburettor adjustment entirely.
What is the vibration level of the MS 300 C-M?
4.2 m/s² on both handles. Professional operators should track daily vibration exposure against the Control of Vibration at Work Regulations 2005 EAV (2.5 m/s²) and ELV (5 m/s²) and manage working time accordingly.
What is the 2-MIX engine and why does it matter?
2-MIX is STIHL's scavenging air layer 2-stroke technology. It reduces short-circuit fuel losses — where unburnt fuel exits with exhaust — improving fuel efficiency and reducing emissions compared to a conventional 2-stroke. The power-to-weight advantage of the 2-stroke design is retained while fuel consumption and exhaust output are reduced.
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.
Downloads
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.
Downloads
Delivery & Returns
UK Delivery
Fast, reliable delivery from our UK warehouse.
- Free UK delivery on eligible orders over £75 +VAT. Long, heavy or oversized items may incur an additional delivery charge, shown at checkout.
- UK Standard Delivery from £3.60 + VAT
Estimated delivery: 2–4 working days
- Next Working Day Delivery – £6.00 + 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 eligible orders over £75 +VAT. Long, heavy or oversized items may incur an additional delivery charge, shown at checkout.
- UK Standard Delivery from £3.60 + VAT
Estimated delivery: 2–4 working days
- Next Working Day Delivery – £6.00 + 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.
