Can I use this camshaft with my stock valve springs?

Yes, this 509C camshaft is designed to work with your stock valve springs. This means you can install it without needing to remove the cylinder heads or upgrade your valve springs, simplifying the installation process.

What kind of performance improvement can I expect from this cam?

This camshaft is designed to provide strong torque, particularly in the low to mid-RPM range, from idle up to around 4500 RPM. It's a popular choice for touring motorcycles where low-end grunt is beneficial.

Does this camshaft kit include all the necessary parts for installation?

The kit includes the 509C camshaft itself. It is designed to be a bolt-in component for compatible engines, and it can be used with stock valve springs. Always refer to the manufacturer's installation instructions for any additional hardware or specific procedures.

S&S Cycle Chain Drive Camshaft Kit 330-0016

Name: S&S Cycle 99-06 BT 509C Chain Drive Camshaft Kit
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-99-06-bt-509c-chain-drive-camshaft-kit-t14-619405
Price: 399.95 USD
Availability: BackOrder

S&S Cycle 99-06 BT 509C Chain Drive Camshaft Kit

$399.95

On Backorder — Expected to ship by May 3, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

S&S Cycle 99-06 BT 509C Chain Drive Camshaft Kit

Key Features

Fits 1999-2006 Harley-Davidson Big Twin models (excluding 2006 Dyna).
Designed for strong torque from idle up to 4500 RPM.
Bolt-in installation for 88 cubic inch engines with stock compression.
Can be used with stock valve springs, avoiding the need for head removal.
Produces approximately 180 psi cranking compression.
Intake valve lift is 0.509 inches and exhaust valve lift is 0.509 inches.

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Will this fit your vehicle?

Product Details

S&S Cycle is well-known for making performance engine components for Harley-Davidson motorcycles. This 509C chain drive camshaft kit is designed as a direct bolt-in upgrade for 1999 through 2006 Harley-Davidson Big Twin engines, excluding the 2006 Dyna models. It's built to provide strong torque across a wide RPM range, from idle up to about 4500 RPM, making it a popular choice for touring bikes.

What makes this cam a smart choice is that it works with your stock valve springs. Many other cams with similar lift figures, like the S&S 551, require higher-lift springs and necessitate removing the cylinder heads for installation. The 509C avoids that extra work and expense, offering an improved torque curve without a complicated installation. It's designed for 88 cubic inch engines with stock compression, and you can expect around 180 psi of cranking compression, meaning you won't need compression releases.

This kit is a solid option for riders looking to improve their bike's low-end and mid-range power. It fits a wide range of Harley-Davidson models, including the Road King, Electra Glide, and Fat Boy, among many others.