In my words
I bolt Upgrade B1 Hinge Pin Holder PRO-MT 4x4 on before a race weekend, not after one.
Hardware is the part of the car you only upgrade once, which makes the first choice worth the thought.
I do not hold inventory — the button sends you to the listing, and it carries the current price.
What Pro-Line says about it
- Made from 7075 Black Anodized Aluminum
- Nearly Twice as Thick as Stock Holders
- Intended for Extreme Durability
- Maintains Same Exact Geometry as Stock
Questions I get about this set
Is it worth doing before I break something?
Usually, yes. A reinforcement part fitted on the bench is cheap; the same part fitted after a DNF costs you a race as well.
Does this fit my car?
The listing carries the full fitment table. Pro-Line lists fitment by platform rather than by year, so compare the part against your current one before the car is in pieces.







