The SRAM AM PowerSpline bottom bracket provides reliable crank support for everyday MTB and trail bikes. SRAM designs the PowerSpline system to handle regular riding and higher loads while keeping installation simple and secure.

This bottom bracket fits 73mm BSA threaded frames (BC 1.37″ x 24 TPI) and uses a 118mm spindle, making it compatible with SRAM PowerSpline cranksets. It threads in cleanly, runs smoothly, and delivers consistent performance over time.

This unit is new old stock. It’s unused, boxed, and in excellent condition. You get genuine SRAM reliability at a lower price, ideal for replacements, refurb builds, or workshop stock.

Key Features:

• Designed for SRAM PowerSpline cranksets.
• 118mm spindle length.
• Fits 73mm BSA threaded bottom bracket shells.
• Thread standard: BC 1.37″ x 24 TPI.
• Durable construction for everyday riding.
• Condition: New Old Stock (unused, discounted).

Details