50mm bore X 40mm stroke = 78.54cc (80cc)
There’s no replacement for displacement! This is the same engine that a few other companies are claiming as their own “exclusive” – fact is, there’s only one type of YD100 on the market so why bother with anyone else will have the lowest price and first to deliver??
New Features Include:
Was: $229.99Now: $139.00
2017 Original Upgrades:
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