As far as the hose just go on eBay. It’s way cheaper plus can’t the thermostat be taken out without changing the hose? Free is a lot cheaper than changing hose. . Just google Beta radiator hose and or thermostat and start reading what comes up. As far as 2016 and 2017 I thought the parts are exactly the same? What’s the difference in both bikes? I didn’t think there was much of anything. I’ve gone to my dealer for parts or Sierra motor etc. There are other parts sites but I’ve rarely gone but they’re there. I try to go to my dealer first. I’ve gotten parts easier and faster than my 01 cr 250 honda. I guess it’s dependi on where you live. Still Beta is really an exotic and I expected the prices to be much higher than Honda. It’s not. .. but of course honda prices are expensive. I realized this when I just wanted a side cover gasket for my cr250 and it was about $25. I’d say spend time in the cross reference threads and scroll through a bunch of threads here to familiarize yourself with what everyone here’s been doing for their Betas. For the original poster you have a dealer and parts come super fast from my dealer and I live in Hawaii. Parts availability is another reason I’m a Beta rider 3 times over.Thanks Hawaii guy! I have googled etc. I was not sure if the 15, 16 and 2017 were same on most parts or not. That was a question I had. If they are the same, perfect! I'm not complaining at all. I'm in love with my 17 RR300 "Race" phenomenal bike. It's funny how there are beta haters out there. Like me, I was on CR250 two strokes since the mid 90's I just found out about Beta like a year ago the bought my 300 last feb after doing research. These guys on here saying things like. "Beta, the only bike heavier than the truck that it came in on" full on hate. I just shake my head. I've ridden 450's, husky 350's, KTM 250xc's XR's CR's KX's new and old. In my opinion my Beta from the crack of the throttle to the high RPM's it's the best thing I've ever ridden. "My opinion" I bet the 2018 are even better. Not for motocross "but I swear I could race moto on it and do well" but for of road riding the thing rocks. Not there aren't other good bikes. I just think for my type of riding I'm on the perfect machine. I could never say that before. The CR's ripped! But that doesn't mean they will work well on wet uphill tree roots and up rock faces or funky slow technical single track like in Moab Utah. Enough said. Thanks for the help guys.