Right crank Stronglight 99 172.5 mm

Stronglight 99 right crank arm – 172.5 mm – square taper – french thread

The Stronglight 99 right crank arm represents the historic expertise of the French brand Stronglight, a well-known reference in the world of bicycle drivetrains. Designed for road, vintage and neo-retro builds, it delivers excellent stiffness and smooth, efficient power transfer.

With a 172.5 mm length, this crank arm provides a balanced pedaling motion, ideal for optimizing efficiency while maintaining rider comfort. Compatible with a square taper bottom bracket, it fits easily into many traditional drivetrain setups.

This Stronglight 99 crank arm is designed to accept chainrings (not supplied) with an 86 mm bolt circle diameter, a proven standard for classic cranksets. Its French pedal thread (14 x 1.25 mm) makes it particularly suitable for vintage bicycles and restorations that respect original specifications.

Strong, reliable and timeless in design, this right crank arm is an excellent choice for replacing a worn component or completing an authentic Stronglight crankset.

Technical specifications

• Product: Right crank arm

• Brand: Stronglight

• Model: 99

• Length: 172.5 mm

• Bottom bracket compatibility: Square taper

• Chainring bolt circle diameter (BCD): 86 mm

• Chainrings: Not included

• Pedal thread: French standard

• Thread size: 14 x 1.25 mm

• Side: Right

• Use: Road bike, vintage bike, restoration

Key features & benefits

• Excellent power transmission thanks to a stiff construction

• Ideal for Stronglight cranksets and traditional drivetrains

• Compatible with rare French standards

• Perfect for vintage bicycle restoration projects

• Proven reliability of the Stronglight 99 range