Trask 530 Chain Drive Conversion Kit For Harley Touring Making big horsepower is great, but turning that power into speed is another story. If you push your bike hard, or have a modified power plant, this Chain Drive Conversion Kit from Trask is a must! Trask offers this kit in 2 gear ratios. 51-tooth will maintain the stock gearing while 54-tooth provides improved off-the-line performance with a slight decrease in top speed. Both options retain the stock Cush Drive for smooth operation and compatibility with stock wheels. Features: 6061-T6 aluminum carrier with black finish 51-tooth option maintains stock gearing 54-tooth option for increased off the line performance (300 RPM increase per gear) Includes 25-tooth front sprocket High quality bearings included Retains Cush Drive Made in the USA Note: Requires 530 chain, 130 link for 51T, 140 link for 54T, sold separately.