In the video we compare two STIHL chains on the STIHL MS 261. The 26RS chain (picture on the left) is the standard original equipment in most countries.
The 63PS chain (picture on the right) is available as part of the STIHL Tuning Kit.
Result: for the same engine power you achieve up to 20% higher cutting performance with the STIHL Tuning Kit. The STIHL Tuning Kit (consisting of guide bar, chain and chain sprocket) is available from your STIHL approved dealer.