242533 23 | LOCK NUT M4 ISO 7042-A2-70 ROTAX

23 | M4 Lock Nut

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M4 Lock Nut for Rotax Max Evo Kart Engines. This lock nut secures the exhaust matting to the exhaust on Max Evo Mini and Micro kart engines.

Each lock nut is M4 in size.