OEM Beta part for Keihin carburetor air adjustment spring. Engineered for precise calibration and reliability, it ensures optimal air-fuel mix and immediate throttle response on Beta Trial Evo 125–300 2T models.
OEM Beta Keihin carburetor air adjustment spring that ensures precise calibration of the air fuel mix and reliable engine response across Beta Trial Evo 125-300 2T motorcycles. Manufactured to Beta OEM standards with durable materials for long service life, this spring maintains consistent performance under race and trail conditions.
Genuine OEM quality and Keihin compatibility
Consistent calibration from 125 to 300 cc 2T models (2020-2025, including Factory and SS variants)
High strength material resistant to heat and fatigue
Preserves tuning stability after maintenance and replacements
Simple, tool-free installation for quick service
Reference 22.39233.000. Essential for keeping performance and reliability of the carburetor Keihin.
