

⚡ Tune your ride like a pro—because every millisecond counts!
The Pro-Line Racing PowerStroke Front Spring Assortment PRO606303 includes 12 color-coded springs (6 black/short primary and 6 silver/long secondary) designed for precise tuning of electric car and truck front shocks, enabling racers to optimize suspension performance with ease.
E**
Great for Shock Tuning.
The media could not be loaded. These work great for tuning your PowerStroke shocks. There are many different combos in this “kit”, and I’ve been testing all of them on my Slash. A little on the expensive side, but it is ProLine, and they make good quality stuff in the states.
L**T
Great springs, but you can't make them fit a Traxxas shock properly
The springs are a great idea and a better way to tune your ride than regular progressive shocks. Unfortunately I could not get them to fit any of my Traxxas shocks correctly. The slider which holds the two springs is either too small or too big for my shock bodies. If you can make them work, they will be awesome, but I wasn't buying Proline shocks after already buying the upgraded Traxxas shocks.
C**N
sweet product! It doesn't come with spring chart
sweet product! It doesn't come with spring chart , so you will need to research pro-line website for spring rating
M**Y
As advertised
So far so good. Have not installed yet. Will update later.
N**A
Good
Nice assortment little hard to figure out but you can print a spring chart right from the website that will more than help you.
B**B
Shouldn't be a seperate purchase.
Like the mounting kit for the same shocks, at $60 for two shocks I feel option springs should be included, however they are good and if you need them you have to get them. . .Stock springs worked on the front, I needed stiffer ones for the rear.
A**R
Awesome
Awesome spring kit for my traxxis
B**S
Four Stars
Excellent shock springs, would have liked a slightly stiffer set.
Trustpilot
1 day ago
1 month ago