Nerf mod Kronos Spring (Strong-prime) 135FPS average (NEW) - Out of Darts
Kronos 3.7" K26 Spring with squared ends
Nerf mod Kronos Spring (Strong-prime) 135FPS average (NEW) - Out of Darts
Kronos 3.7" K26 Spring with squared ends

Rival Kronos Spring (135+ FPS) Strong Prime

Regular price $5.00 Sale

This custom Rival Kronos spring has been manufacture and tested by the OOD team as a perfect upgrade mod for your blaster. This mod is not for young kids! You'll need fairly strong hands to prime this spring. This spring has been custom built and tested to fit the Rival Kronos blaster.

• Medium difficulty on installation
• Both ends flat/squared
• Average 135-140 FPS

• Cut-to-Length Compression Spring,
• Material: Made in the USA of USA spring-tempered steel
• Dimensions: 3.7" Long, flat on both ends


Customer Reviews

Based on 124 reviews
Alex L.
Very strong spring!

This made my Kronos hit way harder while bringing lots of fun!

Spyder T.
Great spring, but too strong of a prime

This spring was super awesome. I put it in my kronos and after I actually managed to load it, I shot it off my balcony and the round went an entire 3/4 of a block. The only thing wrong with this spring thought is that it was too hard to prime and I'm just a kid, so it was pretty hard to pull the slider back. It works great for adults with stronger arm muscles, but overall, the performance I got out of the spring was phenomenal. I would say if your an adult who still uses nerf, definitely buy this spring it works great. but if your just a kid, do not buy this spring the prime is really strong.

Reagan H.
Spring is a GAME CHANGER

I got the Kronos cause a guy at work kept shooting me with his, and he had one of these springs in his, so I had to try it out and WOW. This thing is actually lethal now. And I couldn’t be more happy

christian c.

Rival Kronos Spring (135+ FPS) Strong Prime

Brandon M.
Massive upgrade

My wife and kids can't pull it back, but I can and that means I have an edge in every nerf war now.