S&S CYCLE Flywheel Assembly — 131" displacement, 4-5/8" stroke – 18-23 Softail, 17-23 Touring, 17-23 Trike, 17-23 CVO

The Flywheel Assembly delivers precision balance and durable construction for high-performance gear-drive camshafts.

• ⚙️ Perfect for gear drive camshafts
• 🔩 Consistent balance and precision machining
• 🧩 Balance gear is installed for easy installation
• 🛠️ Strong assembly eliminates the need to weld the crankpin
• 🔥 Heat-treated alloy steel offers increased hardness and improved strength compared with stock components
• 📐 Connecting rods are designed with finite element analysis (FEA) to eliminate weak spots
• 📦 Includes flywheel, crankpin and connecting rods
• 🇺🇸 Made in the USA
• ⚠️ Not recommended for compression ratios higher than 10.0:1 for Tri Glide or other three-wheel models (including conversion)
• ℹ️ Displacement measured with compatible cylinders and pistons

Installation notes: balance gear is installed; verify fitment and clearances before final assembly. For support, contact the manufacturer or an authorized installer.