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View Full Version : ktm 450sx vs crf 450



rubiowner01
11-05-2006, 07:09 PM
Ok i couldn't find much info on the comparison of these motors. Which would be a better choice to go with for a 400ex frame. Is the ktm more difficult to put in than the crf? Which one would produce more power????

nightmare311
11-07-2006, 01:40 PM
thats a good question... i got a ktm450sx motor in my 400ex and omg its fast.. i have never uo next to a crf450 motor but i can smoke trx's and yfz's..

Mitch_McComb
11-07-2006, 06:26 PM
I had a 450sx motor in my preddy before I switched to a 525exc.
That motor pulled really hard. First gear was crazy.

rubiowner01
11-07-2006, 07:14 PM
Ya i am going with the ktm motor. How is the install?? Any problems or hints i should know about??

nightmare311
11-07-2006, 07:15 PM
u got to cut on the top of ur frame on the left side to clear the water pump..

rubiowner01
11-07-2006, 07:17 PM
Originally posted by nightmare311
u got to cut on the top of ur frame on the left side to clear the water pump..

Oh ok, what about the back of the frame to clear around the intake/carb

nightmare311
11-07-2006, 07:18 PM
mine cleared just fine

rubiowner01
11-07-2006, 07:23 PM
thats good to hear. What radiator and exhaust setup did u do??

nightmare311
11-07-2006, 07:23 PM
im running a z400 rad.. and i custom made the exhaust

rubiowner01
11-07-2006, 07:26 PM
Originally posted by nightmare311
im running a z400 rad.. and i custom made the exhaust

cool, im ready to get it started for winter project. Hopefully it will all come togeather. Ill prolly have a bunch more questions later...

nightmare311
11-07-2006, 07:27 PM
just look me up if u wanna i'll help as much as i can..