Visit Kroger.com to download a digital coupon for free Mountain Dew Kick Start! Varieties include Energizing Citrus, Fruit Punch, Black Cherry and Limeade. This digital coupon is only available for download today until 11:59 p.m. PST. The eCoupon must be redeemed by 2/1, and there is a limit of one per shopper’s card. Remember, digital coupons cannot be combined with manufacturer coupons.