Engine Specifications - Honda Rebel 300 - Honda Rebel 300 & 500 Forum
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post #1 of 14 (permalink) Old 02-15-2017, 01:45 PM Thread Starter
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Engine Specifications - Honda Rebel 300

These are the 2017 Honda Rebel 300 engine specifications listed out along with the tank capacity for those interested.

Bore (MM)
76
Compression Ratio 10.7:1
Cooling Liquid
Displacement in CC 286
Displacement in CI 17.4
Engine Type Single-Cylinder
Starter Electric
Stroke 63
Valve Configuration DOHC

Fuel Tank Capacity 3 Gallons
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post #2 of 14 (permalink) Old 02-16-2017, 11:23 AM
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What most of us here are really after is power and torque numbers and how its being put down, so with that being said, here's the real meat and potatoes of engine specs...

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post #3 of 14 (permalink) Old 02-19-2017, 10:50 AM
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Originally Posted by st.rebel View Post
What most of us here are really after is power and torque numbers and how its being put down, so with that being said, here's the real meat and potatoes of engine specs...

Is that the dyno from a cbr300? Because it is not the same as the rebel 300.
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post #4 of 14 (permalink) Old 02-19-2017, 11:15 PM
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Yes it's from the CBR300, post the Rebel 300 chart if you have it.
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post #5 of 14 (permalink) Old 02-20-2017, 12:23 AM
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Originally Posted by st.rebel View Post
Yes it's from the CBR300, post the Rebel 300 chart if you have it.
Well there are no dynos on it yet but honda stated it is tuned differently than the cbr300 and they released this.
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post #6 of 14 (permalink) Old 02-22-2017, 06:32 PM
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Point proven, CBR300R dyno chart did its job of providing some insight into what the engine is capable of and we can see from what you posted it didn't fall too far off. Not the same as the 300R but close enough.
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post #7 of 14 (permalink) Old 02-23-2017, 01:15 PM Thread Starter
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It did provide some insight but the differences are shown there, looking at the chart in that very basic form and you can tell it'll be a noticeable difference in power delivery.
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post #8 of 14 (permalink) Old 02-23-2017, 03:08 PM
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It's not that much more and anyone who has really delved into the specs would factor in the weight difference of the two. The only real benefit we have going on here is better off the line power, but with the weight we're working with, that comes to no surprise.
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post #9 of 14 (permalink) Old 02-23-2017, 05:06 PM
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It's not that much more and anyone who has really delved into the specs would factor in the weight difference of the two. The only real benefit we have going on here is better off the line power, but with the weight we're working with, that comes to no surprise.
Not really sure what you are talking about since the Honda Rebel is the heavier bike.
Not to mention weight wouldn't change DYNO results.

What it shows is the Rebel will have a tiny bit more torque at the line, but the minimal difference and increased weight of the rebel will likely negate that.
It also shows a lower horsepower almost across the board and also quite a big drop in peak horse power. Peaking at a lower RPM than the CBR but not having near the top end speed.

To be honest I think there is a reason for this and sadly it isn't a good one. From what I read, the original plan was only going to include a release of the Rebel 500.
The 300 was only added really to fill the need in asian markets and such. And will be sold globally because it would make a good starter bike.

But the thing is the bike design was based on the 500cc engine not the 300. And while they tuned the 300cc in the same way they redid the 500 the results were not the same.

The Rebel 500 has more Horsepower than the CBR until all the way at the top RPM where the CBR has a higher peak horse power.
And the Torque on the Rebel 500 is higher until it gets into the higher rpm range making it much better in city.

So with the Rebel 500 you get a bike that would actually outproduce the CBR500 in the City and actually out produce it on the highway except for top speed.
But with the Rebel 300 you get a bike that likely would not be able to keep up with the CBR300 outside of first gear.

Not that the 300 will be a horrible bike or anything, it will still be fine. But it just clearly seems like its design was just an after thought.
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post #10 of 14 (permalink) Old 02-24-2017, 02:30 PM
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Not really sure what you are talking about since the Honda Rebel is the heavier bike.
Not to mention weight wouldn't change DYNO results.

What it shows is the Rebel will have a tiny bit more torque at the line, but the minimal difference and increased weight of the rebel will likely negate that.
Ok, lets bring some numbers into this...
  • Rebel 300 Weight: 364 (ABS: 370)
  • CBR300R Weight: 357 (ABS: 362)

What is 8 LBS going to negate?


Who ever said this is just about dyno numbers? Is that all that matters or overall power delivery on and off the dyno? I don't know about you but also factoring road performance is vital to us as owners. Dyno numbers we only brought in here to get an understanding of the power distribution.

Last edited by st.rebel; 02-24-2017 at 02:35 PM.
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