S&S Cycle 90-9510 Gasket Kit for 4-1/8" Bore Stock Pattern Cylinders

The S&S Cycle 90-9510 is a complete top end gasket kit designed specifically for 4-1/8" bore cylinders used in S&S 124" Hot Set-Up Kits and other high-performance big bore applications. This professional-grade gasket set contains all the essential sealing components needed for top end engine assembly.

Key Features:

• Precision-engineered for 4-1/8" bore cylinders
• Includes head gaskets, base gaskets, exhaust gaskets, and O-rings
• Features layered steel head gaskets for superior sealing and durability
• Made in the USA with premium materials for reliable performance
• Cross-reference: Drag Specialties 0934-0653

Important Note: This top end gasket kit does not include rocker box gaskets, which must be purchased separately. Designed for professional installation and ideal for building or rebuilding high-performance Harley-Davidson Twin Cam engines with big bore cylinder upgrades.