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

A gear drive camshaft eliminates the timing chain and its associated lash, leading to more precise valve timing. This direct connection between the camshaft and crankshaft can result in improved engine response and performance.

What is the 'Easy Start' feature on this camshaft?

The 'Easy Start' feature is designed to reduce the compression release during the starting cycle. This allows your stock starter motor to crank over even a modified engine more easily, preventing starter strain.

Do I need to purchase any additional parts for installation on a 2005 Harley-Davidson Road King?

For 2005-2006 models, this camshaft kit is designed as a bolt-in and can typically use stock springs. The kit includes the necessary cams with inner gears and an installation kit, so you should have most of what you need for installation.

Specifications

Brand: S&S Cycle
Part #: 106-5247
UPC: 106-5247

S&S Cycle 99-06 BT Easy Start 585GE Gear Drive Camshaft Kit

Name: S&S Cycle 99-06 BT Easy Start 585GE Gear Drive Camshaft Kit
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-99-06-bt-easy-start-585ge-gear-drive-camshaft-kit-t14-663414
Price: 1070.95 USD
Availability: BackOrder

$1070.95

On Backorder — Expected to ship by May 7, 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 Easy Start 585GE Gear Drive Camshaft Kit improves valve timing accuracy and allows stock starter to start any engine.

Key Features

Fits 1999-2006 Harley-Davidson Big Twin models (except 2006 HD Dyna).
Gear drive design eliminates timing chain lash for improved valve timing accuracy.
Easy Start feature allows stock starter to start any engine.
Designed for 88-96 inch engines with 10:1 to 10.5:1 compression, and 100-107 inch engines with 9.7:1 to 10.5:1 compression.
Bolt-in for 2005-2006 models using stock springs; requires special springs for 1999-2004 models.
Complete kit includes cams with inner gears and an installation kit.

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About this part

Product Details

If you're looking to get more precise valve timing and a smoother start for your Harley-Davidson Big Twin, this S&S Cycle 585GE Gear Drive Easy Start camshaft kit is a solid option. By eliminating the timing chain lash, you get a more direct connection between the camshaft and the crankshaft, which means improved accuracy in when your valves open and close. This can translate to a more responsive engine and better overall performance. Plus, the 'Easy Start' feature is a notable benefit, as it allows your stock starter to turn over even a modified engine without struggling.

This kit is designed for 88 to 96 cubic inch engines with compression ratios between 10:1 and 10.5:1, and for 100 and 107 cubic inch engines at 9.7:1 to 10.5:1 compression. For 1999-2004 models, you'll need special springs, but for 2005-2006 models, it's a bolt-in installation that can use stock springs. This camshaft kit fits a wide range of 1999-2006 Harley-Davidson Big Twin models, including popular bikes like the Road King, Heritage Softail, and Dyna Super Glide, though it's important to note it's not compatible with the 2006 Harley-Davidson Dyna models which require a different style cam. The gear drive design is a key feature here, offering a more robust and accurate timing setup compared to chain-driven cams.

When you open the box, you'll find the cams already fitted with their inner gears, along with a complete installation kit to get you started. This comprehensive approach means you have most of what you need to get this upgrade installed and start enjoying the improved performance and reliability it offers your Harley-Davidson.