In my words
Replacement Chassis & Spine - SC 4x4 is the kind of Pit Hardware part you only notice when it is missing.
A part that loosens under vibration is a part that fails at the worst moment, so thread-lock everything.
I do not hold inventory — the button sends you to the listing, and it carries the current price.
What Pro-Line says about it
- (1) Includes replacement 6061 Aluminum Chassis & Steel Spine
- (1) Made from High Quality Aluminum & Steel
Questions I get about this set
Aluminum or plastic?
Aluminum holds geometry and transfers the hit; plastic bends and comes back. On a rough outdoor track I take plastic in the front and aluminum in the back.
Do I need special tools?
A hex driver set that actually fits, thread-lock and a bench. Rounded hardware costs more time than any part on this page.
