The Wahoo RPM speed sensor is the sleek, magnet-less solution for capturing cycling speed data. It easily mounts to your bike's front wheel hub, and the Bluetooth Smart and ANT+ dual band technology allow you to connect to and display data on both smartphones and bike computers. Tracking speed data has never been this easy. - Both ANT+ and Bluetooth Smart capabilities allow for a wireless connection to both smartphones and bike computers. - No tangled wires on your bike to connect the sensor to your device. - The RPM speed installs easily with no magnets required - It only weighs 16.5 grams with the mount included - Provides accurate speed data during your ride - Mounts on most front wheel hub with a secure silicone casing - Two LED lights show the sensor's device connection (blue) and speed detection (red) - No charging required! Operates on a coin cell battery for up to 1 years. - RPM Speed will fit with most bikes and frame sizes

If you're really serious about your trainer sessions, check out Kurt Kinetic's Pro Flywheel. It attaches quickly and easily to your Road Machine or Rock and Roll flywheel (sold separately) for a total of 18 pounds. It takes your Kurt Kinetic trainer's already stellar real-road feel and ups the realism, which is a must for hard-core endurance workouts, like tempo and long distance rides. You'll also experience longer wind-ups when doing sprint intervals and a longer coast-downs.

Kinetic's Riser Ring lets you level your bike when you're riding on your trainer. Plus, there are 3 other steps that let you simulate climbing by elevating the front wheel. The Riser Ring is simple to use and stable for excellent support. - Designed for the following Kinetic trainers: the Road Machine, Magnetic, and Cyclone