If you've got a Bosch e-bike with their Smart System, this little spoke magnet is super important for keeping your speed sensor working properly. The BSM3150 might look simple, but it's what tells your bike's computer how fast you're going - without it, your speedometer and odometer won't work right. Installation is straightforward - just attach it to your spoke following Bosch's guidelines for positioning relative to the sensor. The magnet is strong enough to reliably trigger the sensor every rotation, even on bumpy trails or at high speeds. I've had mine on through rain, mud, and plenty of rough rides and it hasn't budged or lost its magnetic strength. It's compatible with the Bosch Speed Sensor Slim and works seamlessly with their Smart System display. Perfect replacement if you lost your original magnet or need a spare for your workshop. The quality is exactly what you'd expect from Bosch - no cheap materials or weak magnets here. Much better than trying to use random magnets that might not have the right strength or fit. If your speed readings are acting weird or non-existent, check this magnet first - it's often the simple fix for what seems like a complicated problem. Keep your e-bike running smoothly with this genuine Bosch part!
Free 30-day returns 
Free 30-day returns
