S&S Cycle Evolution 561 Camshaft - 33-5076

The S&S Cycle 561 Camshaft is engineered for high-performance applications, delivering a significant boost to your motorcycle's powerband. Rigorously tested on the dyno, street, and track, this camshaft ensures optimal performance and reliability, making it a top choice for enthusiasts and professionals alike.

Description

Designed for 80"-96" engines with a 9.5:1 to 10.5:1 compression ratio, the S&S 561 Camshaft provides strong midrange power, operating optimally between 3000-5500 rpm. This camshaft is perfect for riders seeking enhanced throttle response and increased horsepower. Engineered with precision, it works seamlessly with hydraulic tappets, ensuring smooth and efficient operation. The S&S 561 series grind enhances your engine's breathing capabilities, leading to improved overall performance. Installation requires careful attention to detail, including checking coil bind, valve-to-valve clearance, valve-to-piston clearance, and cam lobe to case clearance to ensure proper fitment and function. Trust S&S Cycle for superior camshaft technology and unlock your engine's full potential with the 561 Camshaft.

Features & highlights

• Dyno, street, and track tested for proven performance.
• Optimized for 80"-96" engines with 9.5:1 to 10.5:1 compression ratio.
• Delivers strong midrange power between 3000-5500 rpm.
• Compatible with hydraulic tappets for smooth operation.
• Made in the USA, ensuring high-quality craftsmanship.
• 561 Series grind enhances engine breathing and power.

Technical specifications

• Brand: S&S Cycle
• Product Name: Camshaft
• Grind: 561 Series
• Type: Gear
• Intake Open: 32°
• Intake Close: 40°
• Intake Duration: 252°
• Intake Lift: 0.560"
• Intake Lift at TDC: 0.252"
• Exhaust Open: 50°
• Exhaust Close: 26°
• Exhaust Duration: 256°
• Exhaust Lift: 0.560"
• Exhaust Lift at TDC: 0.210"

Important to know

• Requires high-lift springs.
• Spring spacing required.
• Installer must check coil bind, valve-to-valve clearance, valve-to-piston clearance, and cam lobe to case clearance.