2017 ktm 450sxf top end rebuild. What parts?

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7/21/2017 3:33 AM
Edited Date/Time: 7/21/2017 3:34 AM

Hey guys,

First time owning a ktm and its got 78hrs. Im thinking of getting the top end rebuilt at 90-100hours. Im looking at a vertex piston kit with a geniune timing chain. Do Ktm make a Oem top end gasket kit? Also what other gaskets/seals should i get replaced? I plan on keeping this bike for another 40-50hours then trading it in on 2018. Air filters changed every ride and oil every 4hours.

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7/21/2017 6:50 AM

I would never push it that far. Manual for my 15.5 FE is 50 hours for the top end.

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7/21/2017 9:09 AM

More than 10 hours on a piston scares me lol. Usually top end kits(wiseco anyways) come with all the gaskets, exhaust gasket, valve seals etc. maybe take what wiseco includes in theirs and get oem ones

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2009 Kawasaki KX450F
2009 Kawasaki KX250F
2002 Suzuki GSXR 600

7/21/2017 10:54 AM

Just posted this question in the "well here it is" thread. I had mine rebuild at 65 hrs. Top end & gaskets only, cam chain not needed unlike Japanese bikes. I bought Vertex & Oem gaskets, Ordering ktm parts can be a little confusing, I ended up with an extra head gasket.....I"m a vet 50A rider, never sucked dirt & meticulous with oil changes & air filter, but do ride a lot of sand where higher rev"s are standard.....my mechanic said I could have gone longer but I wanted to make sure everything was in good working order, intake valves were on the loose side....otherwise looked great, piston still had the coating on the side walls....3 heat cycles, then raced 3 classes on it... These bikes are so great, just had to treat it right.....

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7/21/2017 5:01 PM

I would not trust a vertex piston in any 4 stroke. I have seen way too many fail, for a 2 stroke they are great pistons and come stock in ktms but even ktm won't use them in the 4 stroke because they don't hold up, oem is best

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7/22/2017 6:11 AM

ktm-5 wrote:

I would not trust a vertex piston in any 4 stroke. I have seen way too many fail, for a 2 stroke they are great pistons and come stock in ktms but even ktm won't use them in the 4 stroke because they don't hold up, oem is best

Who makes Ktm"s Oem 4 stroke Pistons ?

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7/22/2017 7:37 AM
Edited Date/Time: 7/22/2017 7:38 AM

ktm-5 wrote:

I would not trust a vertex piston in any 4 stroke. I have seen way too many fail, for a 2 stroke they are great pistons and come stock in ktms but even ktm won't use them in the 4 stroke because they don't hold up, oem is best

sandman768 wrote:

Who makes Ktm"s Oem 4 stroke Pistons ?

CP Carrillo

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Race Bike: 2018 KTM 350SXF

Other Bikes: 1985 CR80R, 1990 CR250R, 1998 PW80, Specialized Fuse Comp 29.

Sold: 2016 YZ250F, 2012 CRF250R

7/22/2017 8:18 AM

Yup CP pistons are stock in 4 strokes. Great pistons

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7/22/2017 9:08 AM

ktm-5 wrote:

Yup CP pistons are stock in 4 strokes. Great pistons

Since when? My 2011 350 said Vertex right on the piston...I have not had my '17 apart yet

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Tomac and/or Anderson for 2020.....

7/22/2017 10:38 AM

ktm-5 wrote:

Yup CP pistons are stock in 4 strokes. Great pistons

BobPA wrote:

Since when? My 2011 350 said Vertex right on the piston...I have not had my '17 apart yet

I'm not sure when they started because we are new to the 4 strokes as of last year. Our bike is a 16. There was a post somewhere about it also, I've seen the wrist pin bridge come apart and destroy the motor and that was on a kawi

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7/23/2017 7:44 AM
Edited Date/Time: 7/23/2017 7:44 AM

ktm-5 wrote:

Yup CP pistons are stock in 4 strokes. Great pistons

BobPA wrote:

Since when? My 2011 350 said Vertex right on the piston...I have not had my '17 apart yet

KTM owns Pankl. CP Carrillo is a sub company of Pankl. I think it was January 2016 that Pankl went from 70% owners of CP to 100%

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Race Bike: 2018 KTM 350SXF

Other Bikes: 1985 CR80R, 1990 CR250R, 1998 PW80, Specialized Fuse Comp 29.

Sold: 2016 YZ250F, 2012 CRF250R

7/23/2017 5:40 PM

ktm-5 wrote:

Yup CP pistons are stock in 4 strokes. Great pistons

BobPA wrote:

Since when? My 2011 350 said Vertex right on the piston...I have not had my '17 apart yet

c0ncEpT wrote:

KTM owns Pankl. CP Carrillo is a sub company of Pankl. I think it was January 2016 that Pankl went from 70% owners of CP to 100%

Nice. My 350 had Del West valves stock too...anyone know if the new KTM's are the same?

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Tomac and/or Anderson for 2020.....

7/28/2017 11:25 AM

all you need is piston + bottom + topp gaskets.

wiseco is recommended, forged instead of cast (forged mounted from factory)

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7/28/2017 2:05 PM

Thanks for the replies.

May just go Oem now. I can't seem find a CP piston kit in australia. It is worth replacing the cam chain aswell considering the bike will have about 130hrs before i trade it in at the end of the year?


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7/28/2017 4:13 PM

JB479 wrote:

Thanks for the replies.

May just go Oem now. I can't seem find a CP piston kit in australia. It is worth replacing the cam chain aswell considering the bike will have about 130hrs before i trade it in at the end of the year?


Cp pistons are oem and I've been told that ktm timing chains are great and don't need replacing that frequent, not sure exactly but that's just what my dealer had told me, in fact he said he never has seen any issues with them

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11/2/2018 7:17 PM

ktm-5 wrote:

I would not trust a vertex piston in any 4 stroke. I have seen way too many fail, for a 2 stroke they are great pistons and come stock in ktms but even ktm won't use them in the 4 stroke because they don't hold up, oem is best

Yeah I just kind of found this out too. I reassembled and as soon as I filled with coolant I was getting coolant out of the head gasket. I fought it forever trying to get the cylinder on the piston. I'm thinking it's coming back out and I'm getting a CP. I agree never had an issue with a 2 stroke but I don't think I am going to trust it.

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