Harley Davidson Dyna [2007-2017]-Forged performance piston kit hub 4.375 "...

Product description

This piston kit for Harley Davidson Dyna models from 2007 to 2017 was specially developed to improve the performance and efficiency of the engine. The pistons are forged from a 4032 aluminum silicon alloy with a low expansion coefficients and 11% silicon proportion, which ensures high strength and durability. Special accumulators between the first and second piston ring significantly improves the sealing and efficiency of the engine.

In addition, the pistons are equipped with mini -mills in the upper area that reduce the detonation tendency. The piston surfaces are provided with an anti-friction coating, which minimizes friction and thus contributes to durability. The kit is sold in pairs and contains all the necessary components for complete assembly.

Content of the kit

• Pistons: Two forged pistons coated to reduce friction and wear.
• Rings: Two sets of moly -coated rings made of ductile iron, which ensure improved seal and less wear.
• Bolts and locks: Including the necessary bolts and safety elements for safe assembly.
• Assembly oil: Specially formulated oil to ensure smooth installation.

Technical specifications

• Compression relationship: 10.5:1
• Bore: 4 1/8 inches
• Hub: 4 3/8 inches