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

A gear drive camshaft connects directly to the crankshaft using gears, which eliminates chain stretch and ensures more precise valve timing. This setup is generally considered more durable and reliable for performance applications compared to chain-driven systems.

What does the 'Easy Start' feature mean for my bike?

The 'Easy Start' feature is designed to reduce the load on your starter motor and battery when you initiate the engine start. This can lead to a smoother, less strenuous starting process for your motorcycle.

Is this camshaft compatible with all 2006 Big Twin Dyna models?

This camshaft is specifically listed for 2006 Big Twin Dyna models. It's always recommended to consult your motorcycle's service manual or S&S Cycle's fitment guide to confirm compatibility with your exact model and any existing modifications.

S&S Cycle Gear Drive Camshaft 640GE 106-4849

Name: S&S Cycle 2006 BT Dyna Easy Start 640GE Gear Drive Camshaft
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-2006-bt-dyna-easy-start-640ge-gear-drive-camshaft-t14-663341
Price: 683.95 USD
Availability: BackOrder

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

$683.95

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

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

Key Features

Fits 2006 Big Twin Dyna models.
Gear drive system for precise timing and durability.
Easy Start feature for smoother engine ignition.
Designed for improved mid-range power and torque.
Enhanced throttle response.
From well-known engine component manufacturer S&S Cycle.

This camshaft is designed for 2006 Big Twin Dyna models. Please verify fitment with your specific vehicle's requirements.

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Product Details

This S&S Cycle 640GE Gear Drive Camshaft is built for 2006 Big Twin Dyna models. It's a gear-driven camshaft designed to improve your engine's performance, offering a noticeable boost in power and torque, especially in the mid-range where you'll feel it most on the street. The 'Easy Start' feature means it's designed to make starting your engine smoother, reducing the strain on your starter and battery during ignition.

S&S Cycle is well-known for making solid engine components, and this camshaft is no exception. It uses a gear drive system, which means it's directly connected to the crankshaft via gears rather than a chain or belt. This setup is generally more durable and precise than chain drives, eliminating potential stretch and ensuring consistent timing. The 640GE profile is specifically tuned for a good balance of power and reliability, making it a popular choice for riders looking to get more out of their Big Twin without sacrificing everyday usability. You'll likely notice improved throttle response and a stronger pull through the gears.

When installing a camshaft like this, it's important to follow the manufacturer's instructions carefully. Ensure your engine is properly timed and that all related components are in good condition. Because this is a performance camshaft, it's a good idea to check that your engine's intake and exhaust systems are also up to the task of handling the increased airflow and power. Keep in mind that this camshaft is not CARB approved and cannot be shipped to California.