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Author Topic: Big valves vs. stock  (Read 6343 times)

Badboy851

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Re: Big valves vs. stock
« Reply #15 on: November 07, 2020, 11:26:00 AM »
Can you use stock valves for 100cc bore kit?
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olds_cool63

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Re: Big valves vs. stock
« Reply #16 on: November 18, 2020, 04:15:25 AM »
I'd be interested to learn how much power you gain with the 100cc BBK.

My wife's Vitality 50 2T got a HUGE boost of low-end torque and top-end speed just from a 70cc BBK (stage 3, I think).

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Nuff said.

olds_cool63
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Johnny Pag Pagsta (replaced 50cc engine with 110cc, modded-out)
2007 Tank Vision Topline Khaos (cosmetic mods, cherry-bombs)
2005 Kymco Vitality 50 2T (70cc big bore kit, other race mods...tops out at 67mph)
2008 Hyosung GT250 (cosmetic mods)
2001 Suzuki Bandit GFS120

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