KTM 350 SX-F vs KTM XC-F - engine differences?

mx4all
Posts
177
Joined
4/16/2017
Location
SE

Hello.

Trying to decide if I should buy the SXF or the XCF. The 2025 it will be but I think the engine will be the same as 23-24. 

What is the differences between these bikes engine wise?

Different cams? Mapping?

And what about the gearbox? 

I watched a video and they said they had to shift the sxf more and the xcf got longer gears? 

Seems weard to me.. I got a excf 350 and it has very tight gears 1-3. And the sxf I rode seem to have longer 1-3. I believe the xcf got the same gearbox as the excf? 

 

|
SXS
Posts
94
Joined
10/11/2015
Location
PT
3/16/2024 4:09am

Hello

The engine is mostly similar in between the SXF and the XCF, biggest change is the primary transmission gear ratios with longer ratios on the XC models. Mapping should be different as well.

You can't compare the gears from the EXCF model to the XC as the engine is very different overall. Different cams, piston, rods, ECU, gear ratios, etc… So you could put exactly the same secondary gear on these two models and have totally different feeling and characteristics. 
 

Hope this might help you a bit 

3/16/2024 10:57am
SXS wrote:
Hello The engine is mostly similar in between the SXF and the XCF, biggest change is the primary transmission gear ratios with longer ratios on the...

Hello

The engine is mostly similar in between the SXF and the XCF, biggest change is the primary transmission gear ratios with longer ratios on the XC models. Mapping should be different as well.

You can't compare the gears from the EXCF model to the XC as the engine is very different overall. Different cams, piston, rods, ECU, gear ratios, etc… So you could put exactly the same secondary gear on these two models and have totally different feeling and characteristics. 
 

Hope this might help you a bit 

Never been around KTM four strokes much, but it's the same with the two strokes. The SX and XC are more similar, engines are about the same except mapping and I believe the XC has a little lower compression. The XC had a little wider transmission but it's similar. Then the XCW is completely different from the motor to the transmission, better suited for trails and enduro. I would assume it would be the same case with the 350's. 

GPrider
Posts
524
Joined
4/10/2014
Location
La Mesa, CA US
4/16/2024 3:10pm

the SX-F and XC-F engines are exactly the same, Same transmission too. Only difference is mapping. I have both, 2024. The rear sprockets are different by one tooth, transmission gears are identical. Now the 450 XCF-W is different, 6 speed, more mellow motor for many reasons, but to answer your question, there is no difference. 

nathan4765
Posts
91
Joined
11/21/2013
Location
Houston, TX US
Fantasy
576th
4/19/2024 12:48pm Edited Date/Time 4/19/2024 12:50pm

2025 XCF will have spring forks, the 24 might have as well. They have quick shift on the 25 has well. XCFs have a 6 speed, 18inch rear wheel, bigger tank, and kickstand. 

The Shop

4/28/2024 2:22pm

Double check but if I remember correct from my research looking for a '23 model it depends on engine size.

XCF is a 6 speed on the 350 and a 5 speed on the 350 SXF. I think the 450 XCF shares the 5 speed with the 450 SXF model.

Magic Man
Posts
214
Joined
12/9/2010
Location
Albuquerque, NM US
5/16/2024 8:25pm
Double check but if I remember correct from my research looking for a '23 model it depends on engine size. XCF is a 6 speed on...

Double check but if I remember correct from my research looking for a '23 model it depends on engine size.

XCF is a 6 speed on the 350 and a 5 speed on the 350 SXF. I think the 450 XCF shares the 5 speed with the 450 SXF model.

This is correct, 350 sxf is 5 SPD vs xcf 6spd, 450 sxf and xcf both have 5spd, same mapping, just different tuned suspension, gas tank and rear wheel. 

Post a reply to: KTM 350 SX-F vs KTM XC-F - engine differences?

The Latest