What is the primary benefit of installing the S&S Cycle 510G camshaft?

The 510G camshaft is designed to provide improved mid-range torque and power for your Harley-Davidson Big Twin engine. It's a bolt-in upgrade intended for stock or mildly modified engines, offering a noticeable performance boost without requiring extensive engine work.

What components are included in this S&S Cycle camshaft kit?

This kit comes with the 510G gear drive camshaft set, including the inner gears, the outer cam drive gear kit, and a comprehensive camshaft installation kit. This ensures you have the necessary parts for a proper installation.

Can I use my existing valve springs with this camshaft?

Yes, the 510G camshaft is designed to work with your motorcycle's stock valve springs. This simplifies the installation process and helps keep costs down, as you won't need to purchase upgraded springs.

S&S Cycle 510G Camshaft Kit 33-5177 for Harley-Davidson Big

Name: S&S Cycle 99-06 BT 510G Camshaft Kit
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-99-06-bt-510g-camshaft-kit-t14-619409
Price: 948.95 USD
Availability: BackOrder

S&S Cycle 99-06 BT 510G Camshaft Kit

$948.95

On Backorder — Expected to ship by May 23, 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 510G Camshaft Kit

Key Features

Fits 1999-2006 Harley-Davidson Big Twin models (except 2006 Dyna®).
Designed as a bolt-in camshaft for 88-95 cubic inch engines with compression below 9.7:1.
Intended for stock cylinder heads that have not been ported.
Can be used with stock valve springs.
Features 0.510" valve lift on both intake and exhaust.
Intake duration at 0.053" is 238º; exhaust duration is 252º.

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Will this fit your vehicle?

Product Details

This is the S&S Cycle 510G gear drive camshaft kit, designed as a direct bolt-in upgrade for 1999-2006 Harley-Davidson Big Twin engines. If you're looking to improve your engine's performance without major modifications, this kit is a solid option. It's intended for engines in the 88 to 95 cubic inch range with compression ratios below 9.7:1, and it works well with stock cylinder heads that haven't been ported. You can even use your stock valve springs with this camshaft.

The 510G camshaft features a duration of 238 degrees on the intake and 252 degrees on the exhaust at 0.053 inches lift, with a valve lift of 0.510 inches for both intake and exhaust. The timing opens the intake valve at 20 degrees past top dead center and closes it 38 degrees after. For the exhaust, it opens at 52 degrees before bottom dead center and closes 20 degrees after. This profile is designed to provide a noticeable improvement in torque and power, especially in the mid-range, making your ride feel more responsive. The kit includes the 510G gear drive camshaft set with inner gears, the outer cam drive gear kit, and a complete camshaft installation kit, ensuring you have most of what you need for the job.

This kit is a popular choice for riders looking for a reliable performance boost. It's important to note that this camshaft is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for specific details regarding the installation process and any additional components you might need to complete the job, such as gaskets or seals.