With iGS620

now with five variable speeds and a new digital dial

or heart rate curve

Our pulley wheels reduce drivetrain friction and increase bearing life

including the heart rate from your Apple Watch to your favorite app or device

pulley wheels for shimano 12s muscle oxygen sensor With iGS620Delivery in 5 10 business days (EU) Finance available at checkout with humm by flexifi. Pulley wheels for Shimano 12s Handbuilt bearings, designed and manufactured in Denmark. Two sets of pulley spacers included providing compatibility with Shimano Dura Ace 9250, Ultegra 8150 and 1057150 rear derailleurs. In the box: Two 11 tooth pulley wheelsAlloy Spacer KitCeramicSpeed Oil for Pulley Wheel Bearings, 15ml. bottleSticker Sheet