CYA Insert enables multi-standard bottom bracket options for CYA frames
What Our Gearhead® Experts Are Saying:
"I use this insert system whenever I’m resurrecting older Niner frames—it’s one of the best ways to keep a bike relevant. The machining is clean, installs are straightforward, and it keeps the BB shell solid whether you're running PF30 or a threaded setup."
Designed for riders who want full control over their drivetrain setup, the CYA Insert provides a robust interface that accepts multiple bottom bracket standards inside Niner’s CYA shell. Its precisely machined aluminum body ensures tight tolerances for creak-free pedaling, whether installing a PF30 unit for weight savings or switching to a threaded BSA bottom bracket for maximum reliability on long-distance or all-weather riding.
This modular approach makes frame setup and drivetrain evolution significantly easier. Riders can move between axle standards, replace crank systems, or refresh bikes across years without worrying about compatibility limits. It’s one of the most practical upgrades for anyone running a CYA-equipped frame and wanting the freedom to optimize performance, durability, or future component availability.
Details
- Bottom bracket insert for Niner CYA-equipped frames
- Allows use of BB30, BB92, PF30, or English threaded bottom brackets
- Aluminum construction provides durable, stable fit
- Expands compatibility for rebuilding or upgrading drivetrain systems
- Helps eliminate creaks by creating a solid BB interface
- Ideal for riders who want long-term frame versatility
- Item #NNR0014
- Material
- aluminum
- Shell Type
- Niner CYA system
- Threading
- [Threaded] English
- Manufacturer Warranty
- 5 years