I put a Baker six speed overdrive in my FLHR-I. The installer said I wouldn't have to recalibrate my speedometer. So, I picked up my scooter, jumped on I-15, speedo read 65, and man, I was just blowing past everything on the freeway. When I got home, my wife, who took me down to pick up my bike bike said "do you know how fast you were going?". I said "speedo read 65, but somehow, I don't think it's right anymore". She agreed. That night, I ordered the recalibration module. East to install, easy to calibrate. Great product.
This is a wonderful product. Plugged into my factory wiring plugs on my '02 Sportster. Just did a tooth up final drive sprocket change and needed the speedo recalibrated. This product did as it was supposed to. Easy to use and connecect. The adjustment range was perfect to adjust the speed on the speedo to make it read correctly. Would recommend to anyone needing to recalibrate their speedometer.