The Rant Bang Ur MID bottom bracket is a complete press-fit kit designed for BMX and street frames using a MID bottom bracket shell and 22mm crank spindles. It includes all required bearings and spacers to simplify installation and ensure proper crank alignment.
Riders choose the Bang Ur MID when building or refreshing a 22mm crank setup and want a straightforward, durable bottom bracket that holds up to hard riding.
Key Features
• Complete MID bottom bracket kit for 22mm spindles
• Two precision R12 sealed bearings
• CNC-machined aluminum cone spacers
• Internal spacer and four steel crank spacers included
• AL6061 alloy cups
• Press-fit design for MID shells
Compatibility & Use Notes
• Bottom bracket shell type: MID
• Spindle size: 22mm
• Cup / bearing outer diameter: 41mm
• Press-fit installation
• Compatible with MID BB frames only
• Not compatible with Euro (threaded), Spanish, or American BB shells
Service / Ownership Context
Press-fit bottom brackets rely on proper shell tolerances. The frame’s BB shell should be clean and square before installation, and bearings should be pressed in evenly to prevent premature wear. Periodic inspection is recommended for bikes used in park or street riding.
Fit & Use Signals
• A good fit for BMX and street bikes with MID BB shells
• Commonly chosen for 22mm crank spindle setups
• Works well for new builds and drivetrain replacements
• Not ideal for frames with threaded Euro BB shells
• Not the right choice for 19mm or 24mm crank systems
