CeramicSpeed Preload Bolt for Shimano Cranks (24mm)

The CeramicSpeed Preload Bolt for Shimano cranks is a precision-machined replacement for the original plastic preload bolt found on Shimano 24mm spindle cranksets. Made from black anodized aluminum with metal threads and an internal O-ring, it provides consistent preload adjustment with a clean, secure fit—without the need for glue.

This is a simple upgrade that improves durability while maintaining proper bearing preload and crank retention.

Key Features

• Replaces the OEM plastic preload bolt on Shimano 24mm cranksets

• Black anodized aluminum construction for long-term durability

• Internal O-ring provides secure fitment on the crank spindle

• Metal threads for smooth, accurate preload adjustment

• Low-profile design reduces areas for dirt and debris buildup

Specifications

• Crank Compatibility: Shimano 24mm spindle cranks

• Material: Aluminum

• Finish: Black anodized

• Retention: Internal O-ring

• Product Type: Crank preload bolt

Compatibility

• Shimano cranksets using a 24mm spindle preload bolt system

Not compatible with:

• Shimano spindle-based power meter cranksets

In the Box

• CeramicSpeed preload bolt for Shimano 24mm cranks

Why It Matters

Preload adjustment is critical for smooth bearing performance and long-term drivetrain reliability. This CeramicSpeed preload bolt replaces the stock plastic version with a durable aluminum design that holds adjustment better and delivers a cleaner, more precise fit.