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

Description

The piston kit for Harley Davidson Dyna models from 1999 to 2006 is made from a high-quality 4032 aluminum silicon alloy with a low expansion and 11% silicon proportion. This special alloy enables a robust, but slight construction of the pistons. The innovative construction includes accumulator that is located between the first and second piston ring and optimizes the sealing of the rings. In addition, mini -mills are incorporated in the upper area of ​​the pistons, which help minimize the detonation. The piston surfaces are provided with an anti-friction coating to reduce friction and increase the durability.

• The kit comprises two forged pistons, two sets of molybdenum -coated rings made of ductile iron, piston bolts, safety rings and assembly oil.
• The piston kits are offered in pairs.

Details

Compression: 10:1

Bore: 4 1/8"

Hub: 4,000"

Material: aluminum

Packaging: 1 pair