Engine Cases (Pair, Long, Big Bore, Custom); GY6 short screen * FIRST 50 Rieju

* FIRST 50 Rieju

edge-trimmed

but avoid over-torquing to protect your headset's threads

For Honda PCX

15 lb recommended weight capacity

Engine Cases (Pair, Long, Big Bore, Custom); GY6 short screen * FIRST 50 RiejuScooterworks offers our exclusive pair of Custom Big Bore Engine Cases for GY6 long engines. We machine these in matched pairs ourselves, and we bore them up to 63mm, big enough to fit a 63mm performance cylinder kit. Go big! Pick up a new crankcase gasket while you're at it. Specifications: Matched right and left sides Stamped serial numbers ensure you have a matched set Dimensions: 10"L x 10"W x 4"H Compatibility: 157QMJ based 125cc 150cc 169cc