CBR 125

[K!K @]

I Know everybody is sick of hearing this question but does anybody know the top speed of a CBR 125 ???
Anybody who has got one please let me know how fast you have gone on it.
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Suzuki AY50 Katana
~Elite~Knights~

[Frost]

80mph, maybe 85 down hill with a tail wind.

Remember speedo's lie! 4 stroke 125 single won't do more than 80 on a flat road in good conditions.

[instigator]

mind and take off about 5mph from people's answers, as the speedo will over-read.

You'd be looking at a realistic speed of about 74mph I reckon, although I don't know if you'd want to ride about all the time at that speed, the engine wouldn't thank you for it.

[Jrod]

If you want a 4 stroke you'd be best off going for something like an old CG IMO.

[G]

The old cb125 was actually faster than the CBR, if you get one that hasn't been restricted I believe.

[beefcake]

Clock reads 75mph on mine, and thats at 10,750rpm. Probably a bit more if you take it in the red, but I never have. If you go onto www.125ccsportsbike.com a few others reckon they have had 80mph, but that's probably going downhill.
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Gotta get my knee down...

[wildcat]

My cbr125 does (did) 82mph on a flat road with no wind. Confirmed by the others i was riding with. The clock said 85 so it's a bit off.
It's a kinda slow bike but i love it. It stays steady and hasn't got the "bee in a bucket" noise that the 2 stroke 125's have.
(no offence to all the 2 stroke riders i just don't like the sound)
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https://www.bebo.com/Z1000-Wildkat

[JonB]

Quite a few exhaust companies are making performance cans for this bike as well now. Over at the 125 sports bikes website the admin there sells an "Endurance" system which improves top end a bit, but apparantly improves the slowness of acceleration in about 3rd or 4th gear. Micron make two sets, one is just an end can, I have a video of it on here somewhere and then they have the underseat system, which is a full kit including down pipes etc. Which improves top end...a little.

Quite a few modifications that you can make to this bike now, however you will never realistically ever get near the 90MPH mark. Although some naive little child from 125 Sports bikes believed that the CBR was restricted and that he has got his to go 100MPH. That is not true, he says he changed the CDI's or something.

Some people have also been tinkering with the extremely narrow tyres on the CBR and some have been fitting 120s on the rear of it, just to make it look a bit more meaty. In my opinion Honda were wrong to put this in the "Supersports" catagory as it would never keep up with a 2T. However don't be listening to the people who say it is a CG with a fairing. It uses a completely different engine system.
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Be careful whose advice you buy, but, be patient with those who supply it. Advice is a form of nostalgia, dispensing it is a way of fishing the past from the disposal, wiping it off, painting over the ugly parts and recycling it for more than it?s worth.

[askew]

[stinkwheel]

[Spiral]

[Kickstart]

[G]

I thought they had to be retro-actively restricted.

Probably makes under 15hp at the rear wheel if you put it on a dyno though, sotechnically should be ok anyway.

[askew]

It is a twin though, not a single - so slightly different. Does anyone make 125 twins anymore or is it strictly old-school, late 70s, early 80s, used in battlestar galacticar as a flyabike styled 125s that use them?
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What's ya name? What av' ya taken? Chase the lasers, safe as f*ck!

[0ni]

They still make the CB125 T in some odd country - ask meyrick where he got his from.

Your about to join the CB125 appreciation society

[G]

125 twins are made, mostly for cruisers, to emulate the big-cruiser v twin styling.

However they tend to make even less power than their single cylinder counterparts, so best avoided.
One did also make it's way into the 125 Varadero (best avoided, if the stats are anything to go by).

[Frost]

I had a CB125T twin, the thing wasnt restricted in any way, which was nice!

It would pull top gear at about 15 mph, top speed of 75mph, maximum cruising speed 60. I was just in top gear the whole time on it, so i dropped a few teeth on the rear sprocket...allright i drops alot 42 down to a 37. made 4th gear like my 5th used to be, and made 5th like an overdrive. The speedo only went up to 85, but i was getting past dual carragieway traffic at quite a rate so perhaps i might have been going as high as 90
It required a big hill to get up to speed, but stayed there once it was in the meaty bit of 5th gear

To quote m1ke

[Kickstart]

[mrchips]

I hear Suzuki GS125's are good for 70-75.
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Northern Irish? www.nibikers.com

[dodsi]

I allways thought the learner legal HP was 14.6hp not 12

[G]

It was 12hp a few years ago, now 14.whatever.

[8316]

[G]

As mentioned above, I believe, it is not a CG engine, it is a more advanced engine. They could have made an engine that makes more power probably, but it was made to be below the 15hp limit.

[JonB]

From Honda website...
CBR125R: -
Liquid-cooled 4-stroke 2-valve SOHC single

CG125: -
Air-cooled 4-stroke OHV single cylinder
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Be careful whose advice you buy, but, be patient with those who supply it. Advice is a form of nostalgia, dispensing it is a way of fishing the past from the disposal, wiping it off, painting over the ugly parts and recycling it for more than it?s worth.

[Kickstart]

Hi

the UK had a 9kW learner limit from about 1982, but this was increased to an 11kW limit a couple of years ago to bring it into line with other European countries.

The CBR engine is very different from the CG engine, more different than a 600 Bandit engine compared to a GSXR600.

All the best

Keith
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