S&S Cycle 99-06 BT Gear Drive 570G Camshaft Kit

When you're looking to get more performance out of your Harley-Davidson Big Twin engine, this S&S Cycle 570G Gear Drive Camshaft Kit is a solid option. What you get in this kit is the 570G gear drive camshaft set itself, along with the inner and outer cam drive gears, and a complete camshaft installation kit. This means you have all the essential components needed to swap out your stock camshaft for something with a more aggressive profile, designed for 88 to 95 cubic inch engines with compression ratios between 9:1 and 10:1.

The gear drive setup is a notable upgrade over chain drive systems because it eliminates chain stretch and slack, leading to more precise valve timing and a quieter operation. This kit is designed for 1999-2006 Harley-Davidson Big Twin models, with a specific exclusion for the 2006 HD Dyna models. For 1999-2004 models, you'll need special springs to accommodate these cams, but for 2005-2006 models, they are a bolt-in and can utilize the stock springs. The camshaft specifications include a valve lift of 0.570 inches for both intake and exhaust, with a duration at 0.053 of 240 degrees for intake and 255 degrees for exhaust, and timing open at 20 degrees intake and 55 degrees exhaust.

This kit is a comprehensive package for those aiming for improved engine performance. Remember that this part is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for specific details regarding spring requirements and the installation process for your particular model year.