What is the advantage of a gear drive camshaft over a chain drive?

Gear drive camshafts offer a more direct and precise connection between the crankshaft and camshaft. This results in more stable timing and can contribute to a more consistent engine performance, especially at higher RPMs or under load.

Do I need to replace my valve springs with this kit?

For most 1999-2004 Twin Cam 88 engines with stock compression, this 509G camshaft is designed to work with your existing stock valve springs. This makes it a convenient bolt-in upgrade that saves on installation costs and complexity.

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

The 509G camshaft is specifically tuned to enhance low and mid-range torque. This means you'll notice improved pulling power and responsiveness in the lower RPMs, which is ideal for touring and everyday riding.

S&S Cycle 509G Gear Drive Camshaft Kit 330-0017

Name: S&S Cycle 99-06 BT Gear Drive Camshaft Complete Kit
Brand: S&S Cycle
Price: 948.95 USD
Availability: InStock

S&S Cycle 99-06 BT Gear Drive Camshaft Complete Kit

$948.95

Only 2 left in stock

S&S Cycle 99-06 BT Gear Drive Camshaft Complete Kit. Bolt-in torque cam for improved low and mid-range power.

Key Features

Fits 1999-2006 Harley-Davidson Big Twin models, excluding 2006 HD Dyna.
Gear drive design for precise camshaft timing and stable operation.
Intake and exhaust valve lift of 0.509 inches.
Duration at 0.053 lift is 216 degrees for intake and 237 degrees for exhaust.
Optimized for low and mid-range torque, suitable for idle to 4500 RPM.
Designed as a bolt-in upgrade for stock 88 CID engines with standard compression.

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Will this fit your vehicle?

Product Details

Starting with a valve lift of 0.509 inches for both intake and exhaust, this S&S Cycle 509G gear drive camshaft kit is built for Harley-Davidson Big Twin engines from 1999 to 2006. This kit is designed as a bolt-in upgrade specifically for those looking to improve low and mid-range torque without needing to remove the cylinder heads on stock 88 cubic inch engines with standard compression ratios. The gear drive design offers a more precise and stable camshaft timing compared to chain drive systems, which can contribute to a more consistent engine performance.

The 509G cam is engineered to work with stock valve springs in most 1999-2004 Twin Cam 88 engines, saving you time and money on installation compared to higher-lift cams that require additional valve train components. With a duration of 216 degrees for the intake and 237 degrees for the exhaust at 0.053 lift, this cam profile is optimized for an idle to 4500 RPM range, making it a popular choice for touring and cruising applications where strong pulling power is desired. The kit includes everything needed for installation, ensuring a complete and straightforward upgrade for your engine.

This kit is a solid option for riders who want a noticeable boost in torque for everyday riding and hauling. It's important to note that this camshaft is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for specific details and any additional components that may be recommended for your particular application.