JT Steel rear sprockets are manufactured using Japanese C49 high carbon steel. Designed to minimise weight and maximise strength. Accurately machined to achieve balance and a perfect fit and chain alignmentHonda: 82 CB750SC Nighthawk 87-88 CBR1000 FH,FJ all CBR400R 87-90 CBR600FH,FJ,FK,FL 81-86 CBX550 FD,F2D 84 VF1000FE 84-85 VF1000FF,F2F 84-86 VF1000RE,RF,RG 84-85 VF500FD, FE, F2E