Left crank FSA Dyna Drive CK-300

FSA Dyna Drive crank arm – square taper

Reliable performance for an efficient bicycle drivetrain

The FSA Dyna Drive crank arm is a proven and dependable solution for riders looking for a robust component compatible with a square taper bottom bracket. Designed by Full Speed Ahead (FSA), a well-known brand in bicycle drivetrain components, this crank arm offers an excellent balance of stiffness, durability, and value for money.

It is ideal for replacement or refurbishment and fits a wide range of bikes, including MTB, hybrid, city, and trekking bicycles.

Technical specifications

• Brand: FSA (Full Speed Ahead)

• Model: Dyna Drive

• Type: Single crank arm

• Bottom bracket compatibility: Square taper

• Material: Forged aluminum

• Chainring mount: Standard 4- or 5-bolt (depending on version)

• Pedal thread: Standard 9/16"

• Available lengths: 170 mm / 172.5 mm / 175 mm (depending on availability)

• Color: Black

• Intended use: MTB, hybrid, city, trekking bikes

Key features & benefits

• Universal square taper compatibility
  The FSA Dyna Drive crank arm fits most square taper bottom brackets, a widely used standard that makes drivetrain maintenance and repairs simple and cost-effective.

• Stiff and efficient power transfer
  Its forged aluminum construction provides good lateral stiffness, ensuring efficient power transfer from pedaling force to the chainrings and drivetrain.

• Proven durability
  Designed for regular use, this crank arm withstands mechanical stress from pedaling, crank rotation, and drivetrain loads over time.

• Easy installation
  Straightforward to install, it is an excellent choice for replacing a worn crank arm without changing the complete crankset or chainline setup.

Suitable drivetrain configurations

The FSA Dyna Drive crank arm works perfectly with 1x, 2x, or 3x drivetrain systems, depending on the crankset configuration. It suits both recreational riders and daily commuters who want a reliable component to maintain smooth pedaling and extend the lifespan of the chain, cassette, and bottom bracket.

Why choose the FSA Dyna Drive crank arm ?

• Trusted brand in bicycle drivetrain components

• Simple and economical square taper compatibility

• Reliable performance for versatile riding styles

• Ideal for maintenance, restoration, or custom bike builds