KTM 450SXF 2021 - Wiseco comp racers elite piston

jacksonm31
Edited Date/Time 12/24/2021 7:05pm
Hi
Just wondering if anyone has used one of these piston and if so what sort of performance gains did you get.
Any feed back will be appreciated.
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kb228
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kb228 12/18/2021 2:50pm
12/18/2021 2:50pm
I dont know why you would trade a cp piston for a wiseco tbh
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willbilly
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willbilly 12/18/2021 5:25pm
12/18/2021 5:25pm
I used Wiseco back in the 70-90s but agree with KB. My choice would be CP JE Vertex.
MKMX
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MKMX 12/18/2021 10:09pm
12/18/2021 10:09pm
You most likely won’t find too many aftermarket pistons that are made for the later model KTM’s. If not wiseco you may have to go OEM.
CSAR FE
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CSAR FE 12/20/2021 7:20am
12/20/2021 7:20am
Stick with OEM.
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Todd_Quinn
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Todd_Quinn 12/20/2021 5:54pm
12/20/2021 5:54pm
We have run both they are good replace for an upgrade in cr nod goes vertex with thermal coated top
Gary Duck
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Gary Duck 12/21/2021 7:41am
12/21/2021 7:41am
Here's something most people don't take into consideration when upgrading, if you get a small postal scale you will likely discover that a Wiseco or Vertex piston kit has a lot more mass than a CP piston kit. Reciprocating mass...
dkurtd
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dkurtd 12/21/2021 5:51pm
12/21/2021 5:51pm
Like was already mentioned you can't get a CP for a late model KTM, I believe the latest CP is for 2017. That leaves you with Wiseco or OEM (Vertex). I would take OEM over Wiseco.
RGaede
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RGaede 12/21/2021 8:55pm
12/21/2021 8:55pm
dkurtd wrote:
Like was already mentioned you can't get a CP for a late model KTM, I believe the latest CP is for 2017. That leaves you with...
Like was already mentioned you can't get a CP for a late model KTM, I believe the latest CP is for 2017. That leaves you with Wiseco or OEM (Vertex). I would take OEM over Wiseco.
OEM is CP for the 4 strokes. I don't remember when they switched from vertex, but it may have been in 2017. Vertex it's now only OEM in the two strokes.
dkurtd
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dkurtd 12/21/2021 10:27pm
12/21/2021 10:27pm
dkurtd wrote:
Like was already mentioned you can't get a CP for a late model KTM, I believe the latest CP is for 2017. That leaves you with...
Like was already mentioned you can't get a CP for a late model KTM, I believe the latest CP is for 2017. That leaves you with Wiseco or OEM (Vertex). I would take OEM over Wiseco.
RGaede wrote:
OEM is CP for the 4 strokes. I don't remember when they switched from vertex, but it may have been in 2017. Vertex it's now only...
OEM is CP for the 4 strokes. I don't remember when they switched from vertex, but it may have been in 2017. Vertex it's now only OEM in the two strokes.
Which would make sense, if memory serves me KTM is owned by Pierer who also owns Pankl Racing and they own CP Carrillo. I believe that still holds true.

I do find it odd that CP Carrillo's catalog doesn't show a part number for the 21 KTM 450 piston. I wonder if that is to force buyers to buy from a KTM dealer. I also notice the 21 OEM piston is quite a bit more expensive than say the 19 piston.
kb228
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kb228 12/22/2021 5:36am
12/22/2021 5:36am
dkurtd wrote:
Like was already mentioned you can't get a CP for a late model KTM, I believe the latest CP is for 2017. That leaves you with...
Like was already mentioned you can't get a CP for a late model KTM, I believe the latest CP is for 2017. That leaves you with Wiseco or OEM (Vertex). I would take OEM over Wiseco.
RGaede wrote:
OEM is CP for the 4 strokes. I don't remember when they switched from vertex, but it may have been in 2017. Vertex it's now only...
OEM is CP for the 4 strokes. I don't remember when they switched from vertex, but it may have been in 2017. Vertex it's now only OEM in the two strokes.
dkurtd wrote:
Which would make sense, if memory serves me KTM is owned by Pierer who also owns Pankl Racing and they own CP Carrillo. I believe that...
Which would make sense, if memory serves me KTM is owned by Pierer who also owns Pankl Racing and they own CP Carrillo. I believe that still holds true.

I do find it odd that CP Carrillo's catalog doesn't show a part number for the 21 KTM 450 piston. I wonder if that is to force buyers to buy from a KTM dealer. I also notice the 21 OEM piston is quite a bit more expensive than say the 19 piston.
I have a real world explanation for the piston thing. At my company we have seals that are “special designs” that we use in our products. That seal manufacturer will not list the seal or sell it to anyone but us. So if one of our customers wants that seal, they cannot buy it from the seal company directly. Has to be through us. Im sure thats what KTM and CP are doing.
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yz133rider
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yz133rider 12/22/2021 6:09am
12/22/2021 6:09am
$525 for top end kit gasgas Oem part number on Rocky Mountain.
Sandusky26
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Sandusky26 12/22/2021 10:18am
12/22/2021 10:18am
yz133rider wrote:
$525 for top end kit gasgas Oem part number on Rocky Mountain.
Damnit man
1
dkurtd
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dkurtd 12/22/2021 2:08pm
12/22/2021 2:08pm
yz133rider wrote:
$525 for top end kit gasgas Oem part number on Rocky Mountain.
Same as a 21 KTM compared to $378 for a 2019.
Polishhammer 12/22/2021 4:52pm
12/22/2021 4:52pm
I too believe that the CP pistons are of excellent quality, but I wouldn’t hesitate to use a wiseco racer elite series piston. I believe they come with the better ring material; (can’t remember the name). I’m sure it will be fine either way.
eastcoastmx54 12/24/2021 7:05pm
12/24/2021 7:05pm
Just replaced my stock piston at 70 hours on my 20.5 Factory Edition and was still in great condition. I installed a wiseco racer elite. Here’s some pictures for comparison, it was completely machined and seemed lighter then The OEM CP piston. I didn’t weight them because I don’t have a small scale so I could be wrong. The Racer Elite is 14.1 also so it runs a little better. w







t
1
eastcoastmx54 12/24/2021 7:15pm
12/24/2021 7:15pm
eastcoastmx54 wrote:
Just replaced my stock piston at 70 hours on my 20.5 Factory Edition and was still in great condition. I installed a wiseco racer elite. Here’s...
Just replaced my stock piston at 70 hours on my 20.5 Factory Edition and was still in great condition. I installed a wiseco racer elite. Here’s some pictures for comparison, it was completely machined and seemed lighter then The OEM CP piston. I didn’t weight them because I don’t have a small scale so I could be wrong. The Racer Elite is 14.1 also so it runs a little better. w







t
The racer elite has a lot smaller side skirts but I did also notice it has a lot longer wristpin and a lot more surface area for the wristpin on the piston which would make it more stable and distribute the energy better. It looks like a quality part but time will tell.
1
jacksonm31 12/24/2021 10:32pm
12/24/2021 10:32pm
eastcoastmx54 wrote:
The racer elite has a lot smaller side skirts but I did also notice it has a lot longer wristpin and a lot more surface area...
The racer elite has a lot smaller side skirts but I did also notice it has a lot longer wristpin and a lot more surface area for the wristpin on the piston which would make it more stable and distribute the energy better. It looks like a quality part but time will tell.
Yeh cheers for the feedback, did it improve performance much?
eastcoastmx54 12/26/2021 9:48am
12/26/2021 9:48am
eastcoastmx54 wrote:
The racer elite has a lot smaller side skirts but I did also notice it has a lot longer wristpin and a lot more surface area...
The racer elite has a lot smaller side skirts but I did also notice it has a lot longer wristpin and a lot more surface area for the wristpin on the piston which would make it more stable and distribute the energy better. It looks like a quality part but time will tell.
jacksonm31 wrote:
Yeh cheers for the feedback, did it improve performance much?
Yes, it’s a good bit more compression so it should naturally add performance. I ported the head at the same time so can’t completely say if performance was solely the piston itself.
Chippy
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Chippy 12/31/2021 4:50pm
12/31/2021 4:50pm
What fuel was run on the orig. piston

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