Trask Replacement Chain Drive Sprocket For Harley Touring Change up your gear ratios or just replace worn components on your Trask 530 Chain Drive Conversion with these steel replacement sprockets. Features: Direct replacement part for Trask Chain Drive Conversion Kit Heated treated for strength Precision machined steel Cush Drive compatible Note: This is a replacement part for bikes that have chain drive conversions installed and is not compatible with OEM belt drives.