Originally Posted by snowhawk jockey
41's really let the motor do its part and are worth the torque...
Yup, in our tests the 41's were worth 1-2hp all across the range. There was no torque gain with the 39's anywhere but this was with an SMR 990 engine so we haven't tested a 950 with both back to back. I think the results would be the same.
Snowhawk - how's it going? Did you ever get them mounted up?