Engine in a RS4 3
 

I'm new to rc cars. I have a 2.5 nitro rustler. I'm thinking about buyin a RS4 3. I hear the engine sucks so i wanted to know if later on i could put the 2.5 in. If not will it fit in the RS4 ss

Thanks

Engine in a RS4 3
 

If you get the Ss you will be happy with the speed for a while.The SS version comes with the 12rss witch is awsome and the RTR comes with the 15fe witch is junk.The 15fe is just about the most reliable engine there is but it's really underpowered.The 12rss is also really reliable and makes 1+ hp according to HPI.

Engine in a RS4 3
 

the 2.5 is the same size as the fe. 2.5 cc is about .15 ci