B1 Blata / Rep Big Bore kit 50cc

40mm Cylinder to replace standard 33mm 39.5mm piston 50cc -52cc total displacement Cylinder, piston, gudgeon pin, small end bearing, circlips 11+ HP , 8.2+ kW For the water cooled B1 Blata rep engines These kits are rare as hens teeth, no longer produced. I found an unopened stock box under a pile of parts , undiscovered for 15 years. First in first served, once sold out, that's it, no more. I've seen them sell for over $500 NZD, don't miss out. These kits produce ferocious power, I remember my full weight over the handlebars and my bike was still wheel standing off the line, it was crazy.