5Dev

8-Bolt Spider for Dura Ace 2x Chainrings

The 5Dev 8-Bolt Spider for Dura Ace 2x Chainrings bridges the gap between top-tier drivetrain performance and precision American engineering. Designed for riders who demand the best from every pedal stroke, this spider pairs 5Dev’s 8-bolt crank system with Shimano Dura Ace 2x chainrings for a setup that’s as efficient as it is beautiful.

CNC machined in San Diego, every detail of this spider is optimized for stiffness, weight savings, and perfect chainring alignment. The result? Crisp shifting, confident power transfer, and a clean aesthetic that complements any high-performance road build.

• Compatibility: Works exclusively with Shimano Dura Ace 2x chainrings (4-bolt 110BCD pattern)
• Precision CNC Machining: Made in San Diego for unmatched accuracy and durability
• Lightweight: Weighs just 73g for minimal rotational mass
• 8-Bolt Interface: Designed for seamless integration with 5Dev cranksets

For riders chasing the perfect blend of innovation and performance, the 5Dev 8-Bolt Spider delivers a race-ready connection between crank and chainring—built to handle every watt you put down.