Engineered as a direct swap for the 56SR top end, this RC cylinder head restores compression and sealing lost to wear or damage. It is sold as a spare part for routine hobby engine care.
Installation notes: clean all mating surfaces thoroughly, hand-start bolts and then tighten evenly to the specified torque. Follow recommended service schedules, avoid over-torquing, and verify the head gasket and cooling passages are correctly positioned during reassembly.
Tuning and service role: replacing the head forms part of normal top-end servicing to maintain consistent running. After installation, undertake standard run-in and check procedures such as idle behavior, compression feel, and temperature response to ensure correct operation.
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