Integral cylinder head, compact engine structure, low noise;；

Small cylinder diameter and large stroke structure, strong engine climbing performance;

Lightweight piston and piston ring design, reducing reciprocating inertia force of the piston, more conducive to power output;；

The use of reduced pressure valve camshaft makes foot starting more convenient；

The integrated full water cooling system has good engine heat dissipation, low overall temperature, higher durability and reliability, and very stable power output.

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