S&S CYCLE 106" Hot Set Up Kit 900-0354

If you're running a stock or mildly modified Harley big twin and want genuine performance gains without a complete engine rebuild, the S&S 106" Hot Set Up Kit delivers real-world improvements in power delivery and reliability. This bolt-on solution increases displacement and breathing capacity while maintaining compatibility with your existing chassis and heads—no machine work required. You get a complete top-end package engineered for easy installation and immediate results.

What's Included & What You Get:

• Bore increased to 3.927"
• 4 3/8" stroke maintained
• 106 cubic inch displacement
• 10:1 compression ratio
• Forged, coated pistons
• Enhanced fin area cooling
• Recessed valve pockets
• Oversize valve compatible
• 585CE chain-drive cams
• Stock engine height preserved
• Stock piston weight maintained
• No machining required
• No rebalancing needed
• Pushrods and tappets included
• Complete gasket kit included
• Installation instructions provided
• Fuel system sold separately