Kawasaki KX100 Suzuki RM100 Phathead cylinder head kit 1991-2021 Chamber selection:KX41 - 6.4cc (95+ octane) AY22 - 22cc Same as Buy a size larger CX50 Chamber selection:K31 5.3cc Stock compression CR125R9304
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Ships within 48 hours · Estimated delivery Sep 12 - Sep 17