This CP Piston and ring set fits Honda B-Series with an 84.5mm bore at +0.5mm oversize and a 12.8:1 compression ratio as specified. The matched piston and ring kit supports machinists and builders addressing an overbored block, providing the exact sizing and compression characteristic noted for these B-Series engine applications.
CP Piston & Ring Set for Honda B-Series - Bore (84.5mm) - Size (+0.5mm) - Compression Ratio (12.8)