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Our chamber works well with the stock ECU and even better with the custom mapping of the GET unit
Y33 - 18
SX10 23
KTM/Husky/GASGAS screw on and quarter turn gas tanks
8cc (110+ octane)
Kawasaki KX250 Phathead cylinder head kit 1995-2002 Kawasaki Our chamber works well withKawasaki KX250 Phathead cylinder head kit 1995 2002 Chamber selection: K21 21. 6cc Stock compressionK22 20. 2cc (95+ octane)K23 19. 4cc (100+ octane)K24 18. 3cc (105+ octane) Kit includes required engine mounts. Phathead Kits include a head shell with one combustion chamber, two sets of o rings, cylinder head nuts, copper washers, some stickers for your bike and tool box and installation instructions.. Phathead cylinder heads are made of 6061 T6