Growth investors focus on stocks that are seeing above-average financial growth, as this feature helps these securities garner the market's attention and deliver solid returns. But finding a growth stock that can live up to its true potential can be a tough task.By their very nature, these stocks carry above-average risk and volatility. Moreover, if a company's growth story is over or nearing its end, betting on it could lead to significant loss.However, the Zacks Growth Style Score (part of the Zacks Style Scores system), which looks beyond the traditional growth attributes to analyze a company's real growth prospects, makes it pretty easy to find cutting-edge growth stocks.MPLX LP (MPLX) is one such stock that our proprietary system currently recommends. The company not only has a favorable Growth Score, but also carries a top Zacks Rank.Studies have shown that stocks with the best growth features consistently outperform the market. And returns are even better for stocks that possess the combination of a Growth Score of A or B and a Zacks Rank #1 (Strong Buy) or 2 (Buy).While there are numerous reasons why the stock of this company is a great growth pick right now, we have highlighted three of the most important factors below:Earnings GrowthArguably nothing is more important than earnings growth, as surging profit levels is what most investors are after. And for growth investors, double-digit earnings growth is definitely preferable, and often an indication of strong prospects (and stock price gains) for the company under consideration.While the historical EPS growth rate for MPLX LP is 40%, investors should actually focus on the projected growth. The company's EPS is expected to grow 10.5% this year, crushing the industry average, which calls for EPS growth of 5.1%.Cash Flow GrowthWhile cash is the lifeblood of any business, higher-than-average cash flow growth is more important and beneficial for growth-oriented companies than for mature companies. That's because, growth in cash flow enables these companies to expand their businesses without depending on expensive outside funds.Right now, year-over-year cash flow growth for MPLX LP is 16.8%, which is higher than many of its peers. In fact, the rate compares to the industry average of -1%.While investors should actually consider the current cash flow growth, it's worth taking a look at the historical rate too for putting the current reading into proper perspective. The company's annualized cash flow growth rate has been 70% over the past 3-5 years versus the industry average of 14.2%.Promising Earnings Estimate RevisionsSuperiority of a stock in terms of the metrics outlined above can be further validated by looking at the trend in earnings estimate revisions. A positive trend is of course favorable here. Empirical research shows that there is a strong correlation between trends in earnings estimate revisions and near-term stock price movements.The current-year earnings estimates for MPLX LP have been revising upward. The Zacks Consensus Estimate for the current year has surged 0.1% over the past month.Bottom LineWhile the overall earnings estimate revisions have made MPLX LP a Zacks Rank #2 stock, it has earned itself a Growth Score of B based on a number of factors, including the ones discussed above.You can see the complete list of today's Zacks #1 Rank (Strong Buy) stocks here.This combination indicates that MPLX LP is a potential outperformer and a solid choice for growth investors. Zacks' Top Picks to Cash in on Artificial Intelligence In 2021, this world-changing technology is projected to generate $327.5 billion in revenue. Now Shark Tank star and billionaire investor Mark Cuban says AI will create "the world's first trillionaires." Zacks' urgent special report reveals 3 AI picks investors need to know about today.See 3 Artificial Intelligence Stocks With Extreme Upside Potential>>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report MPLX LP (MPLX): Free Stock Analysis Report To read this article on Zacks.com click here.