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The socket
• CNC cylinder porting• Adjustments to the intake and exhaust ports• Adjustments and blending of the transfer ports• Machined base cut for tighter squish and increased compression• Chamfering of all ports
we recommend sizing up• Expect slight shrinkage after first wash like most 100% cotton garments
and long term reliability in demanding professional applications
the dye penetrates the material itself
309 Machine M10 Decompression Valve Plug type_cylinder_porting The socketUpgrade or replace your factory decompression valve with this high quality Performance By 309 M10 Decompression Valve Plug. Designed for reliability and durability, this plug eliminates common failure points found in OEM decompression systems. Precision machined from 6061 aluminum and finished with a sleek black anodized coating, its built to perform while adding a clean look to your engine. Features: Fits most STIHL and Husqvarna models (M10 thread)
