Engine rebuild kit with .25 oversize pistons for the CB/CL450 from the 60's and 70's. Time to rebuild? If you're diving in and doing a rebuild, replacing engine cover gaskets and replacing seals this is a great kit to have on hand! . Installation Tips: Be very careful when installing the cylinder over new rings, it's helpful to have the proper tool to keep the rings compressed as you lower the cylinder over the pistons. Try to use only plastic tipped tools to prevent from scratching aluminum surfaces. The Letter stamped on the top two rings should be facing up when installing them and stagger the ring gaps according to the manual.. Piston Ring Order: Top Compression Ring (silver outer rim) Second Ring (black outer rim) Bottom Rings (3 pieces - Spacer in the middle - 1 thin ring on either side) Press your seals in straight with a seal driver or a socket with a slightly smaller OD than the seal. Both surfaces must be free of dirt to create an oil tight seal. All sealing surfaces for gaskets must be clean and flat to make a proper seal, sometimes non-hardening sealant is necessary.. Oil Seal Kit Includes: Left Crankcase - Clutch adjuster Seal Tachometer Seal Countershaft Seal Upper and lower Crankcase Seal - x2 Points Seal Main Shaft Seal Right Crankcase Cover Seal . Fits Honda: CB450K1-K7 Super Sport - 1968-1974 (Not for CB450K0 from '68) CL450K Scrambler - 1968-1974.
