.: Accelerator Pump Spring :.
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
APS - all FCR MX carbs (00-018)
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)