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

Dartzone Powerball Spring (125 FPS)

Regular price $5.00 Sale

The Dartzone Powerball Spring is a custom made spring from a K26 that offers a roughly 125FPS average compared to the stock average of 92FPS. This mod is very easy and light enough for most ages on the prime. 

Super easy install. Just remove catch and pull stock spring out and replace with custom cut K26. It’s slightly longer so just be careful with the extra tension to place it back in without popping anything. 

• Easy difficulty on installation
• One end flat, one end cut, About 140mm or 18 coils in length
• Around 125FPS

• Custom made compression spring
• Made in the USA of USA spring-tempered steel