510 gear-driven cams for 1999-2017 Twin Cam Harley-Davidson motorcycles from S&S are one of our most popular grinds from S&S. They provide the strongest power increase over the 3000-5000 RPM range, making them perfect for the performance-minded street rider.

Gear-driven cams provide improved intake and exhaust valve timing precision as there’s no chain slack to worry about. Everything is always in perfect sync with the crank at all engine speeds. That, and with the improved airflow movement through the combustion chambers, your heart will pump a little faster every time you open the throttle.

Each kit comes with everything you need to bolt into your Twin-Cam 88, 95, 96 or 103 inch motor. There’s no need to buy aftermarket pushrods or valve springs as these work perfectly with the remaining OEM valvetrain components.

About the only thing you’ll need is a jet kit for carbureted bikes, or an electronic fuel tuner to get the biggest possible bump in power output. It’s all there, in one complete kit with easy-to-follow instructions.

In stock and ready to ship, see it on our website here and then, call at 888.575.6570 to get yours shipped fast! Of course, email forums@partsgiant.com and PM are easy ways to get hold of us as well. Let us know your needs and we’ll get back to you shortly. We’re here 10am to 6pm EST on weekdays.