I Installed A 88cc Big Bore Kit On His Slow XR50 Big Bore Kit Crf50
I Installed A 88cc Big Bore Kit On His Slow XR50 CRF50 88cc big bore kit testing & review (first ride!!) CRF 70 / 88cc FMF Powercore 4 Rev Crf 50 with custom big bore kit This was done over two different days. Not because it took long, but because the camshafts had damage. The seller replaced CRF88 Build: CRF50 Big Bore Kit Installation Guide ...