Kawasaki KX85 KX80 Phathead cylinder head kit 1991-2026 KTM 4cc (95+ octane)

4cc (95+ octane)

6cc (100+ octane)Y04 - 5

8cc (91+ octane)

part numbers from HotRods are 4166(2006-2021) and 4116 (1991-2005)

2cc  (95+ octane)

Kawasaki KX85 KX80 Phathead cylinder head kit 1991-2026 KTM 4cc (95+ octane)Kawasaki KX85 KX80 Phathead cylinder head kit 1991 2026 Our chambers are cut for the 85cc bore but work just fine with the 80cc bore as well. THey are slightly less compression on the 80cc bike but it is very close to the 85cc specs. Chamber selection: K01 6. 4cc Stock compression K02 6. 0cc (95+ octane) K03 5. 6cc (100+ octane) K04 5. 2cc (105+ octane) Phathead Kits include a head shell with one combustion chamber, two sets of o rings, cylinder head