5DEV Super Boost Crank Spindle – 30mm x 139mm

5DEV Crank Spindles – precision made for perfect fit and power. CNC-machined premium 7075 aluminum and hard-anodized, these spindles deliver rock-solid stiffness, low weight, and exact tolerances for smooth bearing interfaces and silent running. Multiple lengths let you dial Q-factor and chainline to your frame, drivetrain, and riding style.

• Compatible with 30mm bottom brackets
• Designed to achieve 56.5mm SuperBoost+ chainline / 73mm shell
• ONLY compatible with 5DEV cranks
• Precision-machined for optimal stiffness-to-weight and durability
• Hard-anodized surfaces for wear and corrosion resistance
• Easy swaps for setup changes or frame moves

5DEV Crank Spindles Crank Part UPC: 850054022097 MPN: CFS30X139