Complete pistonPOP UP

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3043-66156P

HYWAY

STIHL: MS661

Replaces OEM:
-

2 Why you should use POP UP:
The idea of a pop-up is to create higher compression. The piston is sticking up into the combustion chamber, thereby reducing volume. Higher compression generally equates into greater torque, resulting in reduced cutting time (about 12% depending on model).

Ø piston: 56 mm