Top end rebuild set Cylinder B, Honda NSR250 MC21/MC28

The picture shows everything you need to do a top end rebuild on your MC21/28. One kit includes all parts for one cylinder (cylinder ‘A’). To overhaul both cylinders please order 2 kits.

Cylinder A = 54.008mm – 54.011mm       use        Piston B = 53.966mm – 53.969mm

Cylinder B = 54.004mm – 54.008mm       use        Piston # = 53.962mm – 53.965mm

Cylinder C = 54.000mm – 54.004mm       use        Piston D = 53.958mm – 53.961mm

Piston to bore clearance = 0.039mm – 0.045mm