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Continue to ChatValve Spring - Outer, Hisun, 400-500cc, ATV/UTV - 20A2142 - PBC1485F1 - https://www.giobikes.biz/express-parts-catalog/engines-parts-upgrades/valve-spring-outer-hisun-400-500cc-atv-utv-20a2142-pbc1485f1