FSA SELF EXTRACTING CRANK BOLT QR-19

The Precise Solution for BB30 and PF30 Crank Systems.

The FSA QR-19 Self-Extracting Crank Bolt is a specialized M18/M25 hardware assembly designed for the removal and installation of FSA’s high-performance BB30 and PressFit 30 cranksets. Much like its larger siblings, the QR-19 system acts as a built-in puller. By integrating the extraction mechanism directly into the crank arm, it allows riders and mechanics to remove the crankset using only a standard 10mm Allen key, removing the need for a separate, bulky universal crank puller tool.

This specific kit (identified by the M18 inner bolt and M25 outer cap) is the factory-standard hardware for many of FSA’s most popular carbon and alloy cranksets, including the SL-K Light and K-Force Light series. Because these cranks press onto a 30mm spindle with high precision, the QR-19 is engineered to handle the significant torque required to "pop" the arm off the splines without damaging the delicate aluminum threads of the crank arm.

How the Self-Extraction Works

• Fixed Outer Cap: The M25 alloy cap is threaded into the crank arm and remains stationary.

• Internal M18 Bolt: This bolt passes through the cap and threads directly into the 30mm spindle.

• Mechanical Leverage: When you turn the 10mm hex head counter-clockwise, the shoulder of the M18 bolt presses against the underside of the M25 cap.

• Effortless Removal: This internal pressure forces the crank arm away from the spindle, sliding it off the splines smoothly as you continue to unthread the bolt.

Key Features

• Precision CNC Machined Alloy: Both the bolt and cap are crafted from 7075 aluminum to keep weight to an absolute minimum while maintaining high tensile strength.

• Self-Contained Design: Eliminates the risk of using the wrong puller tool, which is the leading cause of stripped threads in expensive carbon crank arms.

• Laser-Etched Torque Specs: Features clear markings on the cap to remind the user of the 38–41 Nm installation torque, ensuring the cranks stay tight under power.

• Direct OEM Fit: The exact replacement part for FSA BB30 road and MTB cranksets, ensuring perfect thread pitch and stack height compatibility.

Technical Specifications

✅ Why This IS For You

• BB30 Crank Owners: If you own a Specialized, Cannondale, or Giant road bike equipped with an FSA SL-K or K-Force BB30 crankset, this is your essential maintenance hardware.

• Weight-Conscious Builders: Since these are made from high-grade alloy rather than steel, they are the preferred choice for riders looking to shave every gram from their rotating assembly.

• The Home Mechanic: Essential for anyone performing periodic bottom bracket bearing cleans or replacements on 30mm spindle systems.

❌ Why This May NOT be for you

• MegaExo (24mm) Users: If you have an FSA crank with a 24mm spindle (like the Gossamer MegaExo), you likely need the QR-31 (M18/M27) or QR-8A kit instead.

• SRAM/Truvativ Users: While SRAM also uses a self-extracting 8mm or 10mm bolt, the thread pitches are proprietary and will not accept FSA hardware.

BFC Pro Tip

The M25 outer cap on the QR-19 features four small holes for a pin spanner. While you rarely need to remove this cap, it is vital to check that it is tight before you try to remove your cranks. If the cap is loose, the inner bolt won't have anything to "push" against, and you’ll just unthread the bolt without moving the crank arm. We also recommend a small dab of anti-seize or heavy grease on the shoulder where the M18 bolt meets the M25 cap—this drastically reduces the "cracking" noise and friction when you first begin the extraction process!