S&s Cycle Big Bore Cylinder Kit for 129" Displacement

Upgrade your motorcycle's performance with the S&s Cycle Big Bore Cylinder Kit, engineered to deliver a substantial power boost. This complete kit transforms your engine, increasing displacement to an impressive 129" while maintaining essential stock compatibility.

Description

This S&s Cycle Big Bore Cylinder Kit is designed to significantly enhance your motorcycle's power and torque, transforming your ride with a robust 129" displacement. Crafted for reliability and performance, it features a precise 4.320" bore size and a 4.375" stroke length, culminating in an optimal 11.0:1 compression ratio for explosive power delivery. The kit includes high-quality MLS (Multi-Layered Steel) head gaskets, ensuring superior sealing and durability under extreme engine conditions. Engineered for seamless integration, this big bore kit retains your engine's original serial numbers and stock height, simplifying installation and maintaining the bike's authenticity. It utilizes the stock bolt pattern and is specifically designed to work flawlessly with your stock crankcase, making it a straightforward yet impactful upgrade. The cylinders come in a sleek powder-coated wrinkle black finish with non-highlighted fins, adding a custom aesthetic without compromising on performance or fitment. Experience a new level of acceleration and responsiveness, making every ride more exhilarating.

Features & Highlights

• Significantly boosts engine performance to 129" displacement, delivering substantial power and torque for an exhilarating ride.
• Includes premium MLS (Multi-Layered Steel) head gaskets for superior sealing integrity and long-lasting durability under high-stress conditions.
• Designed for straightforward installation, retaining your engine's original serial numbers, stock height, and bolt pattern.
• Ensures perfect compatibility with your stock crankcase, making it a reliable and integrated performance upgrade.
• Features a durable powder-coated wrinkle black finish with non-highlighted fins, providing a sleek, custom look while protecting components.

Technical Specifications

• Type: Big Bore
• Units: Kit
• Bore Size: 4.320"
• Color/Finish: Powder-Coated, Wrinkle Black, Non-Highlighted Fins
• Displacement: 129"
• Product Name: Cylinder Kit
• Stroke Length: 4.375"
• Compression Ratio: 11.0:1
• Vendor Part Number: 910-0844A

Important to Know

Not compatible with VVT models.