Product Info | Installation Guide | Buy the APS

The APS eliminates any wiring tricks that are out there and increases pressure on the pump diaphragm due to its being 50% stiffer then the stock ones.

• Direct replacement for OEM spring
• Improved throttle response
• Excellent companion to the ALJ giving you greater range of adjustment
• No need for any wiring on the accelerator pump
• Allows use of longer diaphragms

 

Accelerator Pump Spring (APS) Product Options:

#00-018:   all FCR MX carbs

 

 

 

 

 

 

WHAT MERGE CUSTOMERS ARE SAYING

Bike 100x better with ALJ & APS
"I have an 08 KX250F and it was popping and hesitating when I rode. Stock bike with a PC system. After installing the ALJ and the Merge accelerator pump spring , my bike worked 100 times better. Thanks Merge!"

~ Justin (Nevada)