Description
Keihin carburetor pop off arm springs are a small part that make a big difference in how crisp your personal watercraft responds off idle and through the mid range. These genuine Keihin replacement float valve springs are calibrated to deliver consistent pop off pressure in CDKII carburetors, helping prevent bogging when you stab the throttle and reducing the risk of lean hesitation that can damage an engine under load.
When carburetors age, the original springs can fatigue, corrode, or lose tension, which changes the fuel curve and makes tuning frustrating. Installing fresh Keihin springs restores the predictable reaction that tuners expect, allowing you to dial in jetting and pop off without fighting inconsistent hardware. Each part is stamped and finished to Keihin quality standards so you know the spring rate is correct for serious performance builds as well as stock engines.
- Genuine Keihin pop off arm springs for CDKII carburetors ensure accurate and repeatable pop off pressure during tuning.
- Ideal for stand up and sit down watercraft that need strong holeshot performance, clean acceleration, and reliable fuel delivery at high rpm.
- Offered in multiple rate and length options so you can fine tune your setup: 1290-966-2000 42 mm 40 gram 3/8 inch, 1290-947-2000 42 mm 70 gram 7/16 inch, 1290-992-2000 40 mm 40 gram 5/16 inch, and 1290-961-2000 40 mm 70 gram 11/32 inch.
- Springs are sold individually so you can replace a single worn component or build a matched set for multi carb applications.
- Perfect for riders refreshing an older Keihin CDKII carb, completing a full carburetor rebuild, or chasing the last bit of consistency out of a race tune.
Pair these pop off arm springs with genuine Keihin needles, seats, and gaskets for a complete solution that keeps your ski starting easily, idling cleanly, and pulling hard from low rpm all the way to wide open throttle.
