Tensioner upgrade kit for 300/310 (11-24)

Kawi Performance brand spring tensioner upgrade kit for Kawasaki jet skis, Ultra 300 & 310 models from 2011 to 2024

Reference: 30300-5025A

Directly replaces factory bushings and rubber sleeves that weaken over time, causing tensioner misalignment and belt slippage.

Machined from marine grade alloy, enhanced inserts with integrated seals and high-strength polymer sleeves provide superior support and durability.

Combined with the supplied O-rings, this kit minimizes the need for regular maintenance and improves reliability. Includes a specialized tool to facilitate the removal of factory bushings and original rubber sleeves.