Harley Davidson Cam Chest Kit || S&S Cam Chest Kit

The S&S Cycle 509C Cam Chest Kit is a smart performance and reliability upgrade for Twin Cam Harley riders — combining a complete internal refresh with measurable power improvements and long-term durability. Whether rebuilding an older motor or building a performance cruiser, this kit provides a platform-ready solution engineered for the road ahead

A cam chest kit is a complete engine component upgrade that replaces the entire cam chest assembly in a Harley-Davidson engine — including the camshafts, cam plate, oil pump, tappets, pushrods, tensioners, and related hardware. This part of the engine controls the valve timing and lift, so changing to performance parts can significantly affect how your bike runs.

The cam chest houses critical internal parts:

• Camshafts — control when valves open and close

• Cam support plate and oil pump — ensure oil flow and correct cam drive

• Tappets and pushrods — transfer motion to the valves

• Chain or gear drive components — connect the cam to the crankshaft

A cam chest kit installation is advanced engine work — it requires removing the engine cam cover and rebuilding internal components. Many riders choose a professional mechanic unless they’re experienced with internal engine work.

After installation, a proper fuel tune is often essential. New cam timing and lifts change airflow characteristics, so engine control modules or tuners (like FuelPak, ECU reflash) may be needed for best running performance.

High-Performance Harley Davidson Cam Chest Kit by S&S Cycle

The Harley Davidson cam chest kit — S&S Cycle 509C Standard Chain Drive — is the ultimate upgrade for Twin Cam engines (1999–2006). Engineered for smoother power delivery, reliability, and easy installation, this Harley cam chest upgrade enhances both torque and performance.

⚙️ Engineered for Reliability & Power

This Harley Twin Cam cam chest kit includes matched components — cams, hydraulic tensioners, oil pump, and plate — precision-manufactured by S&S Cycle for long-term durability. It delivers consistent oil pressure, reduced friction, and improved valve timing, making it ideal for riders in the US, UK, Australia, and Canada looking for S&S Cycle Motorcycle Camshafts for Harley-Davidson

🔧 Complete Drop-In Performance Solution

Everything you need comes in one box — no tuning guesswork. Designed for stock and lightly modified engines, this Harley performance cam kit boosts midrange torque, throttle response, and overall engine efficiency.

S&S Cycle 509C Cam Chest Kit || Cam chest kit for Harley Davidson

The S&S Cycle 509C Cam Chest Kit is a high-performance upgrade made just for Harley-Davidson Twin Cam 88† engines from 1999 to 2006 (except the 2006 Dyna®). This chain-drive cam chest kit is created with care and comes from S&S Cycle, which is known for making high-quality products. It improves engine breathing, increases torque, speeds up throttle response, and replaces important internal parts with all-new, high-performance parts made in the USA.

Whether you want to revive a high-mileage engine or extract more usable power from a stock motor, the 509C Cam Chest Kit delivers a reliable and bolt-in solution engineered with long-term durability in mind.

At the heart of the S&S 509C Cam Chest Kit are carefully engineered performance camshafts and a complete assembly that upgrades the entire cam chest system, including the cam support plate, oil pump, tappets, and hydraulic chain tensioners — all designed to work together for smoother, stronger engine performance.

Complete Cam Chest Assembly – What’s Included

The S&S 509C Cam Chest Kit is an all-in-one solution that includes:

• S&S bolt-in performance chain drive camshafts

• S&S Quickee pushrods for simplified installation

• Premium oil pump and cam support plate

• Hydraulic cam chain tensioners

• Precision tappets and related hardware

This complete kit replaces nearly every internal part in the cam chest area, ensuring a cohesive and balanced performance upgrade

Harley-Davidson’s stock cam chest components — especially in older Twin Cam engines — can wear over time, leading to reduced performance, inconsistent oil pressure, and increased stress on internal parts. An S&S cam chest kit not only adds performance but also refreshes all internal cam components, helping your engine run stronger and longer.

This kit is thought to be a bolt-in upgrade for engines that can use it, but you still need to know how to install it correctly and take the engine apart. Most of the time, expert mechanics or performance shops put it in, and then they tune it to get the most power and smoothness out of the engine.

To get the most out of your car, you should typically match upgrading the cam chest with other performance changes like high-flow intake systems, performance exhausts, and ECU tuning. For the greatest results and to avoid damaging your engine during installation, always talk to an expert or look at S&S Cycle’s recommendations.