tuning for honda cb125f 2021

[Reddragon]

Hello everyone, I'm new to this forum. I'm an Italian guy who got his first motorcycle 8 months ago, a Honda CB125F! Since the bike doesn't have a great top speed, around 11 horsepower, I wanted to know if it's possible to change the piston and the cylinder head to a 150cc version, or if you have any advice on making it a bit faster! ( the only mod that i had done its the air filter, a sponge one from malossi) Thanks to everyone, greetings from Italy.

[S-Westerly]

3 hours ago, Reddragon said:

Hello everyone, I'm new to this forum. I'm an Italian guy who got his first motorcycle 8 months ago, a Honda CB125F! Since the bike doesn't have a great top speed, around 11 horsepower, I wanted to know if it's possible to change the piston and the cylinder head to a 150cc version, or if you have any advice on making it a bit faster! ( the only mod that i had done its the air filter, a sponge one from malossi) Thanks to everyone, greetings from Italy.

Don't know what the specific Italian laws might be but I believe the restrictions on new bikers was introduced EU wide so on that basis unless you have an actual motorbike licence it's probably illegal to enhance in any way the performance of what is basically a learner machine. 

[Reddragon]

17 minutes ago, S-Westerly said:

Don't know what the specific Italian laws might be but I believe the restrictions on new bikers was introduced EU wide so on that basis unless you have an actual motorbike licence it's probably illegal to enhance in any way the performance of what is basically a learner machine. 

its not meant for street i forgot to say

[Fleck]

1 hour ago, Reddragon said:

its not meant for street i forgot to say

Buy a 750 then

[Reddragon]

20 minutes ago, Fleck said:

Buy a 750 then

i cant aahah am 17 and the maximum cc its 125 on the paper ofc 

[RideWithStyles]

Hello.

nice

Edited May 15, 2024 by RideWithStyles
O

[Reddragon]

26 minutes ago, RideWithStyles said:

Hello.

nice bike, we have a 2011 version.

 

yes of course for the ro...mean track,

wink wink.

if its for the paper work its for the road.... dont be foolish.

 

if you want higher top speed ,we changed the front sprocket to one tooth less which easily gave just over 10mph more on the flat but at the cost of a touch less mid range.

 

its been designed as small work horse to do get you to places in crappest conditions and lack of maintenance, not a through our race breed horse. So back up and sources for parts will be limited unless you intend to diy it yourself.

would you expect a cheap meat carver to cut a tree? Even if you changed the motor the blades not up to it and vice versa...by which point you might as well got a bigger or in your case a better designed machine in that category for what you're after...
So to put it bluntly youd be wasting you time and money to pursuit the adventure of modding this unit beyond the usual filter,exhaust,ecu flash and even after these will be marginal gains on a tiny unit.

no hahaha am actualy serius i practise a pretty popular sport in italy that basicaly its a race between motorcycle of different kind, i race in the tourism category and the requierement to partitipate its that the maximum ammount of horse power its 12hp and 9kw    STOCK so for that i was saying "on paper" anyway if anyone have any advice even if they are small they are surely accepted thanks.

Edited January 22, 2024 by Reddragon

[RideWithStyles]

 

Edited May 15, 2024 by RideWithStyles

[Reddragon]

1 hour ago, RideWithStyles said:

Hmmmmmm.Really this is soooo sus i dont believe you, but why 12hp??? And you at it now anyway so why you wanted to put a bigger kit on????
Most fit 125s are just under the 15hp mark as std.

not a good bike to start with "for racing".

Anyway hp is fooling, Weight loss is the real key:exhaust, subframe, seats, tool kit, pillion stuff, pegs, bars, master cylinders, all the std body work, clocks, yoke, forks, shocks, wheels, airbox, fuel tank, indicators, Guessing the box swing arm cant be changed?

 

i dont want to seem rude but its not really relevant if u belive me or not as i see ur from yorkshire so u dont know anything about my sport and italian colture, anyway i was more seeking for a 150cc cilinder and piston cause i dont know if remapping the uc it can be good

[Bianco2564]

Do you have a link to the race series so we can appreciate what your goal is?

[Reddragon]

18 minutes ago, Bianco2564 said:

Do you have a link to the race series so we can appreciate what your goal is?

just search for turism motorcycle race under 18 on yt, anyway my goal its just to boost the performance of the engine to get more hp from it cause the bike its already pretty light i even switch from a back drum to a disk brake

[Bianco2564]

Nothing came up on yt?, even tried mototurismo if my spelling is correct.

[onesea]

Not certain the CBF is right bike to start from. The CBR has more top speed to start with.  Also online info on timing will be much more readily available, for 17 year old boys every Mph matters.

 

UK boy racer 125cc seem to do: exhaust, carbs/ ECU, air filter.

The 50cc scooter brigade seem to do big bore kits with some success. At the cost of reliability.

 

Most on 125cc's just wait for bigger bike licence.

 

If it's for racing then striping weight will help.

[RideWithStyles]

So

 

Edited May 15, 2024 by RideWithStyles