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Continue to ChatValve Spring - Exhaust, 200cc, 250cc - 20A2126 - PBC1800F1 - https://www.electricbikeusa.net/express-parts-catalog/engines-parts-upgrades/valve-spring-exhaust-200cc-250cc-20a2126-pbc1800f1
Valve Spring - Exhaust, 200cc, 250cc - 20A2126 - PBC1800F1 - https://www.electricbikeusa.net/express-parts-catalog/engines-parts-upgrades/valve-spring-exhaust-200cc-250cc-20a2126-pbc1800f1