The SE Bikes Rad Series crankset is a BMX-style, three-piece chromoly crank designed for strength and simplicity. It’s built around a 19mm spindle and intended for single-speed BMX and BMX-inspired bikes that see hard use.
This is a common choice for riders replacing worn cranks on freestyle, cruiser, or dirt-jump style builds where durability matters more than weight savings.
Key Features
• Three-piece BMX-style crankset
• Tubular chromoly arms for high strength and impact resistance
• Includes standard 19mm x 150mm 8-spline BMX spindle
• Single chainring bolt pattern
• Designed for single-speed drivetrains
Compatibility & Use Notes
• 175mm crank arm length
• 19mm spindle diameter
• 150mm spindle length
• Compatible with BMX bottom brackets designed for 19mm spindles
• Left-hand or right-hand drive compatible
• Single-speed use only
• Chainring not included unless specified elsewhere
Service / Ownership Context
Correct bottom bracket selection and proper torque are critical on BMX cranksets. Spindle spacing, chainline, and bearing preload should be checked during install. These cranks are designed to take abuse, but regular inspection is still important on bikes used for jumps or street riding.
Fit & Use Signals
• Good fit for BMX, cruiser, or dirt-jump style bikes
• Good fit if your frame accepts a 19mm BMX bottom bracket
• Good fit for single-speed setups
• Not a fit for multi-speed drivetrains
• Not a fit for bikes using road or mountain bike crank standards
