Mxfans Dia 4mm Shaft Center Hole RC Boat 2 Leaves Brass Propeller Dia 37mm P1.4

Q: Would this make my arrow 5 faster?

it should make it faster, but to completely get the performance that this prop can deliver, I would think that upgrading the boat to use a 4s battery and then you might have a boat thats too fast and unable to handle the speed and power . Boats are very tricky to set up to be able to run them crazy fast..But anyways this should give you some more speed and shorter run times, check to see that the boat is not getting too hot with any prop change that you do.... what size is the stock propeller.?

Q: Will this prop fit on a tracxxs m41?

you will need to mic your shaft and then you need to know the blade direction . there are too many models of M41. I bought a mic to check the shafts --Neiko , 01407a