The MS 261 CM is built for operators who want stronger mid-range power and improved throttle response in a lightweight saw.
Each unit starts as a new Stihl chainsaw and is precision modified by Outdoor Power using genuine RIPSAW ported cylinder and muffler upgrades.
Performance Modifications Include
| Modification |
Details |
| CNC Cylinder Machine Work |
Squish cut and base cut for increased compression |
| Complete CNC Porting |
CNC re-sizing and reshaping of intake and exhaust ports for optimal airflow |
| Polished Exhaust Port |
Reduced carbon buildup |
| Chamfered Port Windows & Cylinder Base |
Improved durability |
| CNC Port-Matched Muffler |
Up to 19.25% increase in torque and 12.93% increase in horsepower |
| Gasket Delete |
For increased compression |
Important Information
| Configuration |
Powerhead w/ 20" Bar and Chain |
| Performance |
Significant power increase vs. stock |
| Manufacturer Warranty |
None |
| Included Warranty |
90-Day Warranty on port work backed by Outdoor Power and/or RIPSAW |
| Intended Use |
Professional use only |
Note: This product is not available for purchase in California.
Hazard Warnings
General Power Tool: 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.
Proposition 65: This product contains chemicals known to the State of California to cause cancer and reproductive harm. www.P65Warnings.ca.gov
Order Processing
Most orders are processed within 2-3 business days after payment is confirmed. You will receive a tracking number by email once your order has shipped. Orders are not processed or shipped on weekends or holidays.
Shipping Destination
Outdoor Power ships to the continental United States only. We do not ship to Alaska, Hawaii, US territories, or internationally.
Please note that gas-powered equipment cannot be shipped to California due to CARB emissions regulations. If you attempt to order gas-powered equipment for delivery to California your order may be cancelled and fully refunded.
Shipping Method
We ship via standard ground shipping through UPS and FedEx. Estimated delivery time is 3-7 business days after your order has been processed and shipped. Carrier selection is based on package size, weight, and destination.
Shipping Rates
Shipping costs are calculated based on package size, weight, and destination and are displayed at checkout before you complete your order. Heavy items such as ported chainsaws, backpack blowers, and pressure washers may incur higher shipping rates due to their size and weight.
Packaging
All products ship in their original manufacturer packaging. Orders are carefully prepared to help ensure safe delivery. High-value items such as ported chainsaws are packaged with additional protective materials to prevent damage during transit.
Order Tracking
Once your order has shipped you will receive a confirmation email with your tracking number and carrier information. You can use this number to track your order directly on the carrier's website.
Shipping Delays
Outdoor Power is not liable for shipping and delivery delays. All delivery times are estimates only and are not guaranteed. We are not responsible for delays caused by shipping carriers or events outside our control. Once we transfer products to the carrier title and risk of loss passes to you.
Damaged or Lost Shipments
If your order arrives damaged please contact us within 48 hours of delivery at support@shopoutdoorpower.com with photos of the damaged packaging and product. We will work with the carrier to resolve the issue as quickly as possible.
If your tracking information shows delivered but you have not received your package please contact us at support@shopoutdoorpower.com within 48 hours.
Questions
Email: support@shopoutdoorpower.com
Phone: 315-699-2838
Monday – Friday: 8:00 AM – 5:00 PM EST