genuine 49cc big bore stage 1 cag barrel / piston kits

i have 2 only 49cc barrell / piston kits for sale, these are stage 1 cylinders where the only modification is the machining and polishing of the exhaust port, this is all done to exact measured tolerences which contributes to good performance gains and reliability, this kit is recommended for the person who is looking for a new top end rebuild with extra gains in performance. the kit includes 1x black barrell, 1x piston and rings, piston pin/clips / bearing and gasket plus an illustrated instruction sheet on how to remove and replace your top end , 2 only at $80 each, includes postage in aust.