Kit include: 1 of 100cc steel sleeve cylinder (#BT100) ( 40mm intake not include , need buy separated ) 1 of 49mm bore higher hole piston ( regular) ( for long connecting rod) ( not the 50mm ) 1 of matched writ pin 2 of 49mm rings. 1 of 49mm matched head gasket. 1 of base gasket 1 needle bearing cylinder (not include the intake )piston set include: 1 49mm piston ( regular) 2 49mm rings 1 needle bearing 1 matched wrist pin 2 clips 49mm REED PISTON + PIn include : 1 49mm REED ( windowed piston) Piston 2 rings 1 needle bearing 1 matched wrist pin 2 clips see picture note:piston and rings are 49mm ( not the 50mm) please make sure before buyfits on 66/80cc long connecting rod bottom endthis cylinder is upgrade 80cc into 100cc ( only for long connecting rod bottom end) use original 80cc head is ok.
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