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Virtually all of the parts will be interchangeable. Underneath the bodywork, both bikes share the same frame/rolling chassis... and everything bolts up to the frame. Aside from the crankshaft, the engines are identical.
 

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Virtually all of the parts will be interchangeable. Underneath the bodywork, both bikes share the same frame/rolling chassis... and everything bolts up to the frame. Aside from the crankshaft, the engines are identical.
Interesting, thanks for the response. That's what i thought, but not as much as you mentioned.

Where did you find out about this?
 

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So everything is sized the same between the two bikes? i would have thought there would be a bit more difficulty in switching parts from the one bike to the other.
 

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If you removed all the bodywork, fuel tanks, and mufflers from both bikes, and set those parts aside you would not be able to tell which one is which... that's how many parts the two bike share. As I've stated previously in other threads, Honda did not re-invent the wheel or start with a clean sheet of paper for the CBR300R. They basically took the already proven CBR250R, gave it new bodywork, changed the crankshaft & connecting rod to give the motor a longer stroke, and gave it a new better looking muffler.
 
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Its not a new motorcycle

its the new version of the 250 to compete with the Ninja 300.

They reacted by just turning the 250 into a 300.

Its the same motorcycle.

It doesn't even seem like it bothers too many 250 owners as there is rarely mention of the new 300 on the 250 forum.
 

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Yup you're right.

Now I just wonder how well it performs when put up againt the CBR250 and Ninja 300. The Ninja 300 is FAST, faster than the CBR250
 

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Yup you're right.

Now I just wonder how well it performs when put up againt the CBR250 and Ninja 300. The Ninja 300 is FAST, faster than the CBR250
but that might be gearing and weight differences as opposed to all motor contrasts
 

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Yup you're right.

Now I just wonder how well it performs when put up againt the CBR250 and Ninja 300. The Ninja 300 is FAST, faster than the CBR250
Yes that is why Honda replied with the CBR300.

We don't know how the CBR300 will compare to the Ninja 300 yet

You just have to wait...
 

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That will be the ultimate showdown. before it was the CBR250 vs Ninja 300, even though the 300 is overall the better performance bike. Now it will be close to even game. This will get interesting.
 

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CBR300R and CBR250R interchangeable parts?

Just thought I'd start this thread to see what people know. I feel like it would be super helpful if people added things in as they discover them. Anything from body work to engine stuff to aftermarket products.
 

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Just thought I'd start this thread to see what people know. I feel like it would be super helpful if people added things in as they discover them. Anything from body work to engine stuff to aftermarket products.
The vast majority of OEM Honda parts as well as aftermarket parts & accessories will be interchangeable... check out my previous posts in this thread. Bottom line: The 2011 - 2013 CBR250R and the 2015 CBR300R have a lot more in common in the way of parts, than there are differences.

BTW, I merged your thread with this one which covers the same topic, and was started earlier this year.
 

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hey guys, speaking of interchangeable parts, can anyone confirm if any of the lowering kits for the 250 will work on the 300?

i know a lot of people will say i shouldn't lower my bike but i'm having a **** of a time reversing out of places just on my toes. i actually need to get off my bike to back out most of the time. living in nyc, this is NOT a good thing as there are always traffic flowing and trust me when i say, as a NYer, you never wanna be that guy who holds up traffic (even for a second).

I've already shaved my seat and softened my suspension, but still would like a good 2 inches to be able to quickly back out of situations and ride off as soon as possible.

i know people say it'll affect my cornering, but tbh, my bike is a commuter, not a racing machine. i have no desire to hit corners as crazy lean angles or at high speed. just as most drivers aren't trying to overtake the person in front of them, i'm just trying to go from A to B.

and if you're wondering why i got a cbr (i was originally planning to get a Suzuki tu250x), its because i do need to get on the highway on the weekends and was told the Suzuki was a bad fit for going 65-75mph for a good distance.

sorry this post is so long, every time i mention i wanna lower my bike, i get asked a million questions on justifying my reason, just thought i'd beat the questions to the punch :)
 

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got an answer from soupy regarding my question above. the answer is Yes (for soupy's lowering links anyways). I've also started a separate thread as I thought it was a thread worthy tidbit of info.
 

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If people were curious about the cbr250r saddlemen seats on the 300.

Straight from saddlemen support:

"The seats are very similar but they cannot be interchanged. You can send your 300r seat in and we can make one of our seats on your pan if you'd like!"
 

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Does this mean all aftermarket slip-on's for the 250 can work on the 300?
I don't know about all, but the Danmoto does. Keep in mind the Danmoto use a rear strap to mount to the rear passenger location of the stock exhaust, so there is a little give and take. I bet the other slip ons do.
 

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They're the same, the 300 is just a stroked 250..I am trying to find out through Honda about the location of the ECU. I was told by Dynojet that the the ECU is in the same place as the 250...
 
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