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I'd guess so. I was expecting that the MY2018 EXC (first model with TPI) would have some changes on the sub-frame, tank/radiators that would make them not compatible with my MY2017, but I called the store i was buying the plastics from and asked them. They said they were compatible , and they were right, since i was i able...

Yes. That's all i needed. No modifications required. 2017MY EXC (last model with carburetor) with 2019 (TPI) plastics

I Just finished applying MY2019 EXC TPI 2stroke model plastic kit to my EXC MY2017. No adaption needed!!! Some photos of the process 😁