S&S Cycle Chain Drive Cam Chest Kit Without Cams For Harley Twin Cam (2006–2017)
Complete Billet Oiling & Hydraulic Chain Drive Upgrade for Late Twin Cam Engines
Upgrade your oiling system and stabilize valve timing on your V-Twin with the S&S Cycle Chain Drive Cam Chest Kit Without Cams. Purpose-built for 2006 Dyna models and all 2007 through 2017 Harley-Davidson Twin Cam engines, this comprehensive chest pack provides all the high-performance oiling and support components needed to refresh your cam chest—allowing you to supply your choice of chain-drive camshafts.
At the core of this kit is S&S’s blueprinted billet aluminum high-flow oil pump and matching billet cam support plate. Together, they dramatically increase scavenge and oil feed pressure, eliminating oil sumping and protecting critical bottom-end bearings under severe heat and heavy load. Upgrading to S&S’s heavy-duty hydraulic tensioner components provides consistent chain dampening without the excessive drag or wear associated with factory setups.
Technical Specifications & Product Details
| Feature / Metric | Product Specification | Rider Benefit |
|---|---|---|
| Brand / Manufacturer | S&S Cycle (Made in USA) | Gold-standard American engineering with precision tolerance manufacturing |
| Drive Type | Chain Drive Upgrade (No Cams Included) | Uses reliable hydraulic chain tensioning for quiet, durable valve timing |
| Oil Pump System | Billet Aluminum High-Flow / High-Scavenge | Increases oil pressure and oil return flow to prevent sumping under heavy load |
| Cam Plate Material | CNC-Machined Billet Aluminum | Provides maximum rigidity and resists flexing under high spring pressures |
| Included Components | Pump, Support Plate, Hydraulic Tensioners, Lifters, Gaskets | Complete foundation pack allowing custom chain-drive camshaft selection |
Engine Dynamics & Chain Drive Performance
### The Chain Drive Advantage for Twin Cam Motors
Unlike gear-drive conversions that require ultra-tight crankshaft runout tolerances (under .003″), the S&S hydraulic chain drive system offers forgiving compatibility with standard factory crankshaft runout specifications up to .005″. S&S’s precision hydraulic chain tensioners maintain constant, smooth pressure on the timing chains, eliminating chain whip, reducing mechanical noise, and extending component service life.
### Key Performance Benefits
Vehicle Compatibility Guide
S&S Cycle Chain Drive Cam Chest Kits (Without Cams) offer direct fitment for 2006 Dyna models and 2007–2017 Harley-Davidson Twin Cam 96ci, 103ci, and 110ci engines setup for chain-drive camshafts:
### Compatible Harley-Davidson Twin Cam Models (2006–2017)
- Harley-Davidson Dyna: FXD, FXDB, FXDL, FXDF, FXDWG (2006–2017)
- Harley-Davidson Softail: FLS, FLSTC, FLSTF, FXSB, FXST (2007–2017)
- Harley-Davidson Touring: FLHX, FLTRX, FLHTK, FLHR (2007–2016)
- Harley-Davidson Trike: FLHTCUTG, FLRT (2009–2016)
Fitment Note: Compatible with late-style inner chain drive camshafts (2006 Dyna, 2007–2017 Twin Cam). Accommodates crankshaft pinion shaft runout up to .005″.
Step-by-Step DIY Installation Overview
Installing an SThe **S&S Cycle Chain Drive Cam Chest Kit (Without Cams)** for 2006–2017 Harley-Davidson Twin Cam engines is designed to replace and significantly upgrade the entire oiling system and cam support structure while retaining a chain-drive setup.
It is ideal if you already have a set of chain-drive cams, plan to purchase custom cams separately, or want to upgrade the stock oiling components for superior reliability and oil flow.
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### Kit Overview & Core Components
This package replaces the stock cast components with precision CNC-machined aluminum parts and upgraded internals:
* **Billet Aluminum Cam Support Plate:** Machined from high-strength billet aluminum to provide greater rigidity than stock cast plates. It resists flexing, keeping the cam and crankshaft aligned under heavy loads.
* **High-Volume Billet Oil Pump:** Delivers up to **26% more supply volume** and **33% more scavenge volume** compared to stock Twin Cam pumps. This lowers engine running temperatures, improves oil circulation, and prevents wet-sumping.
* **S&S Premium Hydraulic Tappets (Lifters):** Engineered to tighter tolerances to maintain oil pressure at higher RPMs and reduce valvetrain noise.
* **Hydraulic Chain Tensioners & Hardware:** Replaces wear-prone stock units with durable hydraulic tensioners, including inner/outer timing chains, sprockets, gaskets, bearings, and all necessary hardware for installation.
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### Key Benefits
* **Increased Oil Pressure & Flow:** Eliminates oil starvation at high RPMs and reduces overall engine head temperatures.
* **Improved Engine Longevity:** Prevents common stock Twin Cam oiling failures and reduces wear on the valvetrain.
* **Flexibility:** Allows you to pair high-performance oiling components with any 2006–2017 style chain-drive camshafts of your choice (stock or aftermarket).
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### Fitment Considerations
* **Dyna Models:** Fits **2006–2017** Dyna models.
* **Softail & Touring Models:** Fits **2007–2017** Softail and Touring models.
* **Crankshaft Runout:** Designed for stock or mild engines. If running heavy performance setups, ensure your crankshaft runout is within specification (typically **0.005″ or less** for chain drive setups).
