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

Product description

This high-performance piston kit for Harley Davidson Dyna models from 2007 to 2017 is made from a 4032 aluminum silicon alloy. The alloy is characterized by a low expansion coefficient and a silicon proportion of 11%, which increases the strength and durability of the piston. The well thought -out design includes accumulator that is placed between the first and second piston ring to improve sealing and performance. In addition, fine grooves in the upper area of ​​the piston minimize the risk of detonations.

The piston surfaces are provided with an anti-friction coating that ensures a low-friction function and extends the lifespan of the engine. The kit is delivered entirely with two forged pistons, two sets of molybdenum -coated, ductile iron rings, piston bolts, safety rings and assembly oil.

Technical details

• Bore: 4 1/8 inches
• Hub: 4 3/8 inches
• Compression relationship: 10.5:1
• Material: Forged 4032 aluminum silicon alloy
• Packaging: Kit including 2 pistons, rings, bolts, fuse rings and oil
• Sales form: In pairs