Swap in the Serpent 1337 Precision Ball Bearings to cut rolling resistance and improve drivetrain feel. The 15x21x4mm size fits many common locations and helps reduce heat and wear during long sessions.
Engineered to steady tolerances, these bearings offer reliable rotation and reduced vibration. They suit a range of setups from weekend bashers to club racers, making them a handy part to keep in your spares box.
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