S&S Cycle 910-0692 1250cc Big Bore Conversion Cylinder Kit 11.2:1 Compression Wrinkle Black

The S&S Cycle 910-0692 is a complete 1250cc big bore conversion cylinder kit designed for Harley-Davidson Sportster models. This kit transforms 883cc and 1200cc Sportster engines to a full 1250cc displacement, delivering substantial increases in horsepower and torque without requiring machining, case splitting, or engine rebalancing.

Key Features:

• High-compression 11.2:1 ratio with 5.5cc dome pistons for maximum power output
• Forged aluminum pistons with coated skirts, measurement windows, and S&S logo
• Oversized valve pockets accommodate valves up to 2.00 inches
• Premium 3-9/16 inch bore cylinders in durable wrinkle black powder coat finish
• Cast-in iron cylinder liners for long-lasting durability

Complete Kit Includes:

• S&S 1250cc forged pistons with rings and wrist pins
• S&S 3-9/16 inch bore cylinders
• Multi-layer steel (MLS) head gaskets
• Base and exhaust gaskets
• Assembly lube and detailed installation instructions

Manufactured in the USA by S&S Cycle, this conversion kit is engineered for straightforward installation without major engine modifications, making it an ideal upgrade for riders seeking more power while maintaining the bike's original character. Note: 883 models require XL1200 cylinder heads to achieve correct compression ratios.