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Master & Cia (Brazil) - Big Bore Kits

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Anyone here try their products?

240-255-260-270cc available.

Edited by millwoodva

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did a google, found nothing...

i have been thinking hard about a 250 kit.

i would like to see there products.

do you have any contact info ?

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Don't want to upset the moderators, not sure if listing websites is allowed...

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don't want to piss of anyone..

send me a pm or tell me what "key" words need to be in my google string.

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kits look good, some look to be supplied with a "destroking" pin.

i just purchased a set of cr forks, so im holding off on the big bore until the "legs" have been fixed.

got the site saved, need to run through with google translator so i can get a grip on the offerings....

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kits look good, some look to be supplied with a "destroking" pin.

i just purchased a set of cr forks, so im holding off on the big bore until the "legs" have been fixed.

got the site saved, need to run through with google translator so i can get a grip on the offerings....

4mm offset

OEM in the package..

DSC02304.jpg

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price? source? :smirk:

Just Got Reger Engineering fork set up. Got Works shock. My bike ROCKS! Now I want to go with bigger bore. 250cc or 270cc. Will i need top end rebuilds like on my KTM sx 450?

Love my 230 more than I do the KTM now. Love the thought of no rebuilds.:smirk:

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Remember stroking the crank to get roughly 15% more displacement will bring the peak rpm down 15% as well. May not be enough metal in the head to improve flow and get it all back. 230 heads are based on the old SL100 head, there's not a lot of room to grow in the airflow department. We used to put CB750 valves in the SL/XL 100/125s but I don't remember if guides had to be modified or not. Honda may have already done that when they enlarged to 185/200. I've never checked to be honest.

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As mentioned in the previous thread that's a "stroking" pin not "destroking". The instructions will be in portugese so if you get one make sure that thing is aimed up to "stroke" it 4mm instead of lose it...

Mikeee P

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Received to kit today and found that a spacer plate is included (8mm est.)

Just emailed my contact to see if the OEM length timing chain is still used.

Still need to translate the instructions, but see that the cases get bored to 73mm for the new cylinder.

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i assumed "de-stroking" based on factors like timing chain / cylinder length etc..

if the pin has a 4mm offset then its adding 8mm of stroke totaling 74mm ?!

plus a heavier piston ! 74mm of stroke, your going to have a torque monster !

i am very interested to see if there is a noticable amount of vibration...

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