What is the primary benefit of the gear drive design in this camshaft kit?

The gear drive design eliminates the timing chain, which means there's no chain lash to affect valve timing. This results in more accurate valve timing and improved engine performance.

Specifications

Brand: S&S Cycle
Part #: 106-4850
UPC: 106-4850

S&S Cycle 2006 BT Dyna Easy Start 640GE Gear Drive Camshaft Kit

Name: S&S Cycle 2006 BT Dyna Easy Start 640GE Gear Drive Camshaft Kit
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-2006-bt-dyna-easy-start-640ge-gear-drive-camshaft-kit-t14-663342
Price: 1070.95 USD
Availability: BackOrder

$1070.95

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S&S Cycle 2006 BT Dyna Easy Start 640GE Gear Drive Camshaft Kit. Improves valve timing accuracy and allows stock starter to start any engine.

Key Features

Fits 2006-2017 Harley-Davidson Big Twin and Dyna models.
Includes inner gears, outer cam drive gear kit, and .640 inch lift cam.
Designed for engines 95 CID or larger with 10.5:1 to 11.5:1 compression.
Operates effectively in the 3000-6000 rpm range.
Improves valve timing accuracy by eliminating timing chain lash.
Easy Start cams allow the stock starter to start any engine.

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About this part

Product Details

This S&S Cycle 640GE Gear Drive Camshaft Kit includes the inner gears, an outer cam drive gear kit, and the .640 inch lift cam itself. It's designed to make horsepower, especially in engines of 95 cubic inches or more with compression ratios between 10.5:1 and 11.5:1, operating effectively in the 3000-6000 rpm range. This kit is a popular choice for Harley-Davidson Big Twin and Dyna models from 2006 through 2017, including popular bikes like the Road King, Street Glide, and Dyna Super Glide.

What sets this kit apart is its gear drive design, which eliminates the timing chain and its associated lash. This means improved valve timing accuracy, leading to more consistent engine performance. The 'Easy Start' feature is a notable benefit, allowing your stock starter motor to handle the increased compression of a modified engine without excessive strain. Plus, there are no tensioner shoes to worry about wearing out or failing, which is a common maintenance concern with chain-driven cams.

If you're looking to build a high-performance engine for your Harley-Davidson, this S&S Cycle camshaft kit is a well-built option. It's intended for those seeking significant power gains and improved reliability in the upper rpm range. Keep in mind that this kit is not CARB approved and cannot be shipped to California.