Fingerboard Tuning.

The bushings, O-rings and pivot cups. Tightening the locknut clamps things down, but it's the bushing durometer that sets how the truck actually feels.

51A is the loosest and most responsive. 61A is the classic loose feel, the same as our OG bubble bushings. 71A is medium, tighter and steadier for dialing in tricks. If you're torn, 61A is the safe middle.

Pro Duro bubble bushings are custom molded silicone that gives smoother, more consistent turning and lasts a lot longer than standard O-rings. Pro Duro O-rings drop in where your stock O-rings sit and hold their shape longer than the rings most trucks ship with.

Each truck uses 2, so a 5-pack tunes both trucks and leaves you a spare.

Yes. They fit all major fingerboard truck brands, including wider-kingpin trucks like Dynamic and Y-Truck.

The pivot cup seats the pivot of your truck hanger, and along with the bushings it shapes how the truck turns. Pro Duro pivot cups are molded from our own silicone blend, and we carry cups for every major truck brand.

Orders ship the next business day, and US orders over $50 ship free. We ship internationally too, with standard (10 to 20 business days) and, to many countries, expedited (5 to 10 business days) options at checkout. Shipping details.

For 90 days after delivery, if anything arrives defective, damaged, or not as described, we replace it, refund it or credit you in full, and we cover the return shipping. Changed your mind instead? You have 30 days to send it back for any reason. See the full guarantee.