TB Parts Replacement Piston Ring Set for the KLX110/DRZ110/Z125 143cc big bore kit. These are the same rings that come with our extremely popular 143cc big bore kit. If you have multiple seasons on your big bore kit it might be time to install a new set of rings. Installing new rings ensures your bike is running at top performance. We are including the top end gasket set with the rings for the complete install! The gasket kit also comes with a new exhaust gasket and O-Rings for the cam and tappet covers. This kit has everything you need to freshen up your big bore!