“S&S +.010in. Forged 89ci Stroker Pistons. Fits Evolution Big Twin 1984-1999 with S&S 4-5/8in. Stroker Flywheel” has been added to your cart. View cart
For over 50 years, K&N® has been an industry-leader in automotive filtration and technology—offering products to increase performance, protection, and longevity in thousands of vehicle applications for consumers worldwide.