61X BigBore Ported 85mm - 770cc ( starting Bore ) Short Block

This a new 61x cylinder ported and resleeved to a 85mm big bore . With 62t crankcases and wiseco flat top premium forged pistons , Ada Girdled head and custom domes , Hotrods crankshaft . Great freeride powerplant or thos looking for the thextra power for freestyle applications without breaking the bank . The engine is entirely built by Thrust Innovations llc.