Investors with an interest in Automotive - Domestic stocks have likely encountered both Harley-Davidson (HOG) and Fox Factory Holding (FOXF). But which of these two stocks is more attractive to value investors? We'll need to take a closer look to find out.We have found that the best way to discover great value opportunities is to pair a strong Zacks Rank with a great grade in the Value category of our Style Scores system. The Zacks Rank is a proven strategy that targets companies with positive earnings estimate revision trends, while our Style Scores work to grade companies based on specific traits.Right now, Harley-Davidson is sporting a Zacks Rank of #2 (Buy), while Fox Factory Holding has a Zacks Rank of #3 (Hold). The Zacks Rank favors stocks that have recently seen positive revisions to their earnings estimates, so investors should rest assured that HOG has an improving earnings outlook. But this is just one factor that value investors are interested in.Value investors also tend to look at a number of traditional, tried-and-true figures to help them find stocks that they believe are undervalued at their current share price levels.Our Value category grades stocks based on a number of key metrics, including the tried-and-true P/E ratio, the P/S ratio, earnings yield, and cash flow per share, as well as a variety of other fundamentals that value investors frequently use.HOG currently has a forward P/E ratio of 10.12, while FOXF has a forward P/E of 21.17. We also note that HOG has a PEG ratio of 1.09. This metric is used similarly to the famous P/E ratio, but the PEG ratio also takes into account the stock's expected earnings growth rate. FOXF currently has a PEG ratio of 1.53.Another notable valuation metric for HOG is its P/B ratio of 2.45. The P/B ratio pits a stock's market value against its book value, which is defined as total assets minus total liabilities. For comparison, FOXF has a P/B of 4.47.These metrics, and several others, help HOG earn a Value grade of A, while FOXF has been given a Value grade of C.HOG sticks out from FOXF in both our Zacks Rank and Style Scores models, so value investors will likely feel that HOG is the better option right now. Zacks Names "Single Best Pick to Double" From thousands of stocks, 5 Zacks experts each have chosen their favorite to skyrocket +100% or more in months to come. From those 5, Director of Research Sheraz Mian hand-picks one to have the most explosive upside of all. It’s a little-known chemical company that’s up 65% over last year, yet still dirt cheap. With unrelenting demand, soaring 2022 earnings estimates, and $1.5 billion for repurchasing shares, retail investors could jump in at any time. This company could rival or surpass other recent Zacks’ Stocks Set to Double like Boston Beer Company which shot up +143.0% in little more than 9 months and NVIDIA which boomed +175.9% in one year.Free: See Our Top Stock and 4 Runners Up >>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 HarleyDavidson, Inc. (HOG): Free Stock Analysis Report Fox Factory Holding Corp. (FOXF): Free Stock Analysis ReportTo read this article on Zacks.com click here.Zacks Investment Research