- Must be used with our stroker flywheels to achieve 131" displacement (part #s 320-0605, 320-0620)
- Powder coat finish match factory finish, giving the bike a "sleeper" advantage
- Huge displacement increase means huge power increase
- .030" MLS (multi-layered steel) head gaskets
- Original engine serial numbers are retained
- Includes 131" Cam Cover Badge
- Works with stock crankcases
- Retains stock engine height
Upgrade your Harley Davidson Milwaukee Eight® engine with the S&S Cycle part number 910-0763 big bore kit, designed for models from 2017 and newer. This high-performance kit features a forged piston and precision-machined 4.25-inch cylinders, enabling a total displacement of 131 cubic inches when paired with S&S's 4.625-inch stroker crank (sold separately). Built with tighter tolerances and superior materials, this kit ensures durability and maximum power output. The powder-coated finish matches the factory look, providing a sleek "sleeper" appearance that doesn't compromise style for performance. This kit includes a 131-inch cam cover badge and allows retention of original engine serial numbers, maintaining the authenticity of your motorcycle. It works seamlessly with stock crankcases and maintains stock engine height, making installation straightforward and ensuring compatibility with your existing setup. The huge increase in displacement translates directly to substantial power gains, making it ideal for riders seeking significant performance improvements. Please note that this kit is not carburetor approved, and carb acknowledgment is required during installation. Designed for powersports applications, this kit is not suitable for air freight and must be used in conjunction with specific stroker flywheels (part numbers 320-0605, 320-0620). Enhance your Harley Davidson's performance with this premium big bore kit from S&S Cycle, built to deliver reliable, massive power for the serious enthusiast.
Features:
- Must be used with S&S stroker flywheels to achieve 131" displacement
- Powder coat finish matches factory appearance for a "sleeper" look
- Significant displacement increase yields substantial power gains
- .030" MLS (multi-layered steel) head gaskets for durability
- Retains original engine serial numbers
- Includes 131" cam cover badge for aesthetics
- Compatible with stock crankcases for easy installation
- Maintains stock engine height for seamless integration
