Welcome aboard! The JTR242 sprocket is only sprocket available and it only comes in 50 and 53 tooth. You will have to order a custom aluminum sprocket from here. Just fill out the order form with the measurements. Bolt circle is 96mm, bolt holes size is 10.5mm, center circle is 64mm but if you remove the steel ring on the hub you can use a 58mm hole which would be a better fit.
https://shop.pbisprockets.com/product.sc?productId=503