Quote:
Originally Posted by Megadan
Just my opinion on the big nore cylinder. Being "worth it" is a matter of opinion. Will it provide a gain? Absolutely. On it's own without some head porting and/or a cam upgrade, it likely wouldn't be a whole lot. Plenty more torque on the bottom end to take advantage of, but no real top end improvement.
The other real issue being cost. Motocult offers a machined and decked 70mm bore jug ready to install with the piston and new gaskets for $250. If the supplier in Aliexpress ever gets them in stock again, there is a source there that runs about $150 that already has the sleeve machine, ready to bolt on. It's not decked.
A regular bore cylinder can be had on ebay for as little as 60 to 70 bucks.
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https://www.ebay.com/itm/250cc-Cylin...5-e0bc64292688
Will this one do? its a link from the good ol boys youtube channel but mine is a 2021 so i dont know if these engines have changed at all.