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Description
Replacement cylinder head stud for 50cc MHR team Ø40mm kits on DERBI euro 3 and 4 and AM6 engines. To be fitted only on the kit reference 3112981 and 3112381 because this cylinder head is perfectly and specially designed and studied for the latter. This cylinder head stud has a tapered combustion chamber and is identical to the original delivered with the kit.
Tips for your assembly :
Volume to obtain: 5.4cm3
Compression ratio: 1: 15.4
Squish: 0,55mm