Harley Davidson Dyna [1999-2006]-forged performance piston kit hub 4,000 "

Product description

This high -quality piston kit for Harley Davidson Dyna models from the year 1999 to 2006 is forged from a 4032 aluminum alloy with a low expansion coefficient and 11% silicia share. The construction was specially developed on the computer to ensure an optimal balance between lightness and strength. A accumulator between the first and second piston ring improves the sealing of the rings significantly. In addition, small grooves minimize the risk of detonations in the upper part of the piston. The piston surfaces are provided with an anti-friction coating in order to minimize the friction and extend the lifespan.

Content of the kit

• Two forged pistons
• Two sets of molybdenum -coated rings made of ductile iron
• Piston
• Security clips
• Assembly oil

Technical details

Bore: 4 1/8"

Hub: 4,000"

Compression relationship: 10:1

Material: Forged aluminum

Packaging: Sales takes place in pairs