Home / Recreation / Minibike Brake Disc DB30R-178 Minibike Brake Disc DB30R-178Price Not Available Price may not be up-to-date. Out of Stock View Product Part Number: DB30R-178 Brand: BAJA MOTORSPORTS Seller: Sears PartsDirect Category: Recreation Description This brake disc (part number DB30R-178) is for minibikes. Brake disc DB30R-178 stops the minibike when you apply the brake. Wear work gloves to protect your hands when installing this part.