Engine rebuild kit for the 1981-1986 Honda Trail CT110. Time to rebuild? If you're diving in and doing the top end, replacing engine cover gaskets and replacing seals this is a great kit to have on hand!
Gasket Set Includes:
30391-102-306 - Points cover gasket - (1980-1981) 1981 - VIN# JH2JD010-BS100002 TO JH2JD010-BS110551
30392-121-306 superceded by 30392-121-631 - Point base gasket - fits 1980-1986
22112-121-630 - Clutch cover gasket - fits 1980-1986
15128-028-030 - Oil pump cover gasket - fits 1980-1986
12191-459-000 - superceded by 12191-459-306 - Cylinder Gasket - fits 1980-1986
12200-459-010 superceded by 12251-459-951 - Cylinder Head Gasket - fits 1980-1986
12394-459-010 superceded by 12394-459-951 - Right cylinder head side cover gasket - fits 1980-1986
16212-943-306 - Carburetor Gasket - fits 1980-1981
18291-001-010 superceded by 18291-HB2-900 - Exhaust Gasket - fits 1980-1986
11395-459-952 - Left crankcase cover gasket - fits 1980
11395-459-307 - Left crankcase cover gasket - fits 1981-1986
11191-121-630 - Crankcase gasket - fits 1980-1986
11393-459-000 superceded by 11393-121-630 - Right crankcase cover gasket - fits 1980-1986
12208-MC0-003 - superseded by 12208-413-003 - Valve stem seal x2 - fits 1980-1986
91306-141-000 - Rubber Gasket 9mm x2 - fits 1980-1986
91307-KF0-003 - O-RING (18X3) oil dip stick - fits 1980-1986
91301-028-000 - O-RING (27X2.0) intake manifold engine side - fits 1980-1986
91302-001-020 - O-RING (30.8MM) tappet cover x2 - fits 1980-1986
4 additional o-rings
Oil Seal Kit Includes:
Behind Spark Advancer Seal
Behind Front Sprocket Seal
Right Crankcase Cover Seal
Left Crankcase Cover Small Seal
Left Crankcase Cover Large Seal (not used on 1980 model)
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.
CT110 Trail - 1981-1986
CT110 rebuild kit
Posted by John A DeCuir on 8th May 2020
Pretty much perfect, at a fair price.
Posted by Brian on 14th Mar 2018
I used this gasket/seal kit to rebuild my 84 CT110. Everything fit well and I had no problems with any of the gaskets or seals. No complaint about the quality of the kit.