PEM 61004Q QuickChange Gears Set 4Q 4.11/5.25 and 4.86/6.21 Quick Change PEM QuickChange Gears Set 4Q 4.11 Ratio 5.25 / 3.22 4.86 Ratio 6.21 / 3.80 Made from high grade gear steel Hobbed and fully heat treated 10 Spline Bryke Racing Part #: PEM 61004Q.
