12 O'Clock Labs Speedodrd K1 Speedometer Calibrator

Easy and quick install, just went to their website and punched in my aftermarket sprocket size and what the original sprocket size was as per the instructions and the chip handled the rest. I was worried about water getting on this and causing damage but after numerous rains and washes the chip is still doing its job. Just make sure that you are purchasing the right size calibrator otherwise your connections won't match up. Always double check before you order something.

Once you read the instructions and follow them step by step, it's very easy to use. I programmed it in minutes on my ZX-6R, my odometer was -18.9% off now reading spot on as my gps.

I changed both sprockets on my motorcycle and needed this to re-calibrate the speedo. The instructions are clear but you can also go to the website to input the data to get the percentage of change. Being anal about mpg. I went for a few runs on the xway to check the odo. I got it perfect within a few inputs.

Works just how they said it would. Went to the website should u how to program it. I would recommend doing GPS to get exact speed. Works great but the max speed just says 189 mph can't reset it.

Works well easy install, calibrated with gps and a calculator. my ZX6R was 6% off on stock gearing, now its bang on.

Very easy install, programming not too difficult

You can't beat the speedo drd for a budget speedo correction. I use these on every motorcycle I own.

Easy to use, once you find where to plug it in. Works great!