Tektro A11 Disc Brake Adapter - Post Mount to Post Mount (+20mm)
Bigger Rotor, Same Mount
current price, $9.99
Run a bigger rotor on the brake mount you already have. The Tektro A11 is a post mount to post mount adapter that moves your caliper outward by 20mm, so a mount designed for a 160mm rotor takes a 180mm, and a 180mm mount takes a 203mm.
Worth doing for two reasons. A larger rotor gives more leverage, so the same brake stops harder for the same effort at the lever. And a larger rotor has more material to absorb heat, which is what keeps a brake from fading on a long, steep descent or when you're carrying weight.
Specifications
- Type: Post mount to post mount (PM–PM)
- Offset: +20mm
- Steps up: 160mm mount to a 180mm rotor, or 180mm mount to a 203mm rotor
- Color: Black
- Includes: Mounting bolts
Check which rotor size your fork or frame is rated for before ordering. An adapter raises the rotor size your mount can take, but your fork, frame and brake each have their own maximum — use the smallest of them.
⚠️ Professional installation recommended. Brake mounting bolts have a specified torque, and a caliper that isn't aligned to the rotor will rub or brake unevenly.
Risk-Free Purchase: State Bicycle Co. offers FREE EXCHANGES* — if this item doesn't work out, we'll send you a return label and exchange it for free.
FAQ
RETURNS & EXCHANGES:
You have 30 days from receiving your order to request a return or exchange. Return shipping fees may apply. Some items are final sale / non-returnable.
Add the Package Protection Plan at checkout for free return labels, free exchanges, extended 60-day window, and coverage for loss/theft/damage in transit.
View full Return Policy .
SHIPPING:
Most in-stock items ship within 1 business day. You’ll receive tracking as soon as it goes out.
Learn more: Shipping Policy.
ASSEMBLY:
Complete bikes ship ~90% assembled, but final setup and tuning should be done by a professional mechanic. This keeps you safe and helps validate your warranty.
WARRANTY: Warranty activates when you submit proof of professional assembly.
- 5-year warranty on all bicycle frames
- 1-year warranty on non-consumable parts
- 2-year warranty on Essor USA products
Details: Warranty Policy.
SIZE CHARTS & SPECS:
Need fit or tech info? Find detailed geometry charts, size guides, and build specs here:
Size Charts & Specs.
SUPPORT:
Have a question or an issue with your order (damaged in shipping, missing items, etc.)?
Reach out and our team will take care of you:
Contact Us or email info@statebicycle.com.
