Thread Repair Adapter for Grip Shift Handle – Custom-Fit Fix for Broken Adjuster Threads

Frustrated by a broken grip shift adjuster thread? I was too! When my kid's Huffy 3x5 (15-speed) shifter broke, finding a replacement was nearly impossible since most bikes are 18 or 21 speed. So, I designed this custom thread repair adapter—just slide it over the remaining stub to restore the threads for your adjuster nut.

✅ Why Choose This Fix?

✔ Custom-fit – Tailored to your exact measurements
✔ Easy install – No drilling or special tools required
✔ Durable USA-made PETG filament

📏 How to Order:

Upon purchase, send me these two measurements:
1️⃣ Stub diameter
2️⃣ Thread pitch

I'll custom-make your adapter and send you two (a backup included!) so you can get back to smooth shifting! 🚴‍♂️

🔧 Technical Details:

• My broken shifter stub measured 10.34mm with 10mm x 1.25 threads.
• The Amazon replacement I bought (which didn’t fit this bike) had a 9.86mm stud with 10mm x 1.0 threads.
• I designed the repair part with a slightly larger inside diameter (ID) for a snug, slip-on fit.
• No glue needed (but you can use it for extra security).

Place your order and send me your measurements—I’ll make sure your shifter is back in action!

TIP: If you don't have a caliper, most auto parts stores or hardware stores have a bolt size checker and some might have a caliper. Digital calipers are CHEAP on Amazon: https://amzn.to/4aV3eOw