The popular Pine Tree inserts you loved for the SCX24 are now available in Seedling size, purpose-built for SCX30 tires.
 
Because the SCX30 platform is lighter, these inserts are designed with extra air gap to let your tires flex, conform, and grip rocks better—right where it matters most.
 
With different wheel manufacturers using slightly different beadlock barrel sizes, we’ve created multiple inner and outer diameter options so you can get the perfect fit.
 
✔ Tested on Injora beadlocks and other popular wheels
✔ Designed for real crawling performance
✔ Tunable feel depending on your setup
 
 
🔧 How to Choose the Right Seedlings
Getting the right fit is simple—just follow these steps:

1. Determine Outer Diameter (OD) 
Measure inside the tire to find the outer diameter size of the insert you want. If you go by the tires listed size, that is the outer lugs they measure and that won't give an accurate size. We recommend leaving a couple millimeters of air gap between the insert and tire to allow it to wrap around the rocks better. These little trucks are pretty lightweight. 

Note: The inner part of your tires where the Inserts go is quite a bit smaller size than the outer lug where the tire is measured. That's why the inserts seem like they they are way smaller than your tire based on the listed tire OD and why we have a list below showing the size we like for some of the popular tires.
 
2. Determine the Inner Diameter (ID)
Check your beadlock wheel specs (or measure the barrel ring).
We size inserts to fit snug, but they can stretch slightly. We use a Letter to correspond with the sizes we offer.
 
Letter
ID
Best Fit
D
19.6mm
Injora D18 wheels (19.7mm rings)
M
20.5mm
Injora ModuWheels & D19 beadlocks (20.6mm)
T
21.6mm
TCRC wheels (21.7mm)

 
3. Combine ID + OD to Order
Pick your letter (ID) + number (OD).
Example:
Injora ModuWheels + 32mm Insert OD → M32 
When you select you'll see a color next to it (M32 Yellow), that's more for our reference because we try to color coordinate them to help us pick the right ones. 

⚙️ Performance Notes
Designed to give your tires controlled flex + sidewall support
The triangle “tree” structure helps your tire bite into obstacles when climbing
Want more flex? 👉 You can trim one side of the triangle pattern to soften the insert

🛠️ Build Notes
These are printed in TPU and, due to their small size, may have a slightly rougher finish—but they are fully tested and perform great where it counts.

WHEEL RECOMMENDATIONS:
Injora D18 5 Spoke Aluminum Wheel and add a Brass Clamp Ring
Injora D18 6 Spoke Aluminum Wheel and add a Brass Clamp Ring
Injora D19 Ripple Brass Wheels
Injora ModuWheels
Deep Dish TCRC Wheels

TIRE RECOMMENDATIONS:
28mm Green: Injora Swamp Claw, Injora King Trekker
30mm Orange: Pro-line Aztec (big air gap - George likes it)
32mm Teal: Injora XHX Pin Tires, Injora Hamrock, Pro-Line Aztec, Pro-line Baja Pro X