S&S Cycle Camshafts — Harley-Davidson Dyna Wide Glide, Dyna Low Rider, Dyna Super Glide (1983-2020)

S&S Cycle 640C chain-drive camshaft kit for Harley-Davidson Dyna and big-twin engines, designed to increase mid-range performance in 95+ cubic-inch displacement engines running 10.5:1 to 11.5:1 compression. Kit includes cams, bearings, gaskets, and installation instructions.

Features

• Fits 95+ cubic-inch engines
• Designed for 10.5:1 to 11.5:1 compression ratio
• Includes cam bearings and gearcover gaskets
• Complete installation instructions included

Specifications

• Brand: S&S Cycle
• Manufacturer Part #: 106-4399
• Category: Engine Components / Camshafts
• Weight: 3.9 lb

Fitment

Fits 2006 Harley-Davidson Dyna models and 2007-2016 big-twin models equipped with 95+ cubic-inch displacement engines.

Frequently Asked Questions

What's included in the kit?

Camshafts, cam bearings, gearcover gaskets, and complete installation instructions.

Will this work on my 88-cubic-inch engine?

No — this cam kit is designed for engines of 95 cubic inches or larger displacement.

Do I need to adjust my compression ratio before installing?

The cam is engineered for engines running 10.5:1 to 11.5:1 compression. Verify your engine's CR before ordering.

Is professional installation required?

Camshaft installation requires engine disassembly and timing expertise. Most riders have this done by a qualified Harley technician.