The new Slacker V4 with Bluetooth® is the ultimate suspension tool for your street, adventure, off-road or mountain* bikes. Building off the proven record of the Slacker V3, he V4 is so much more than a sag scale that we are re-branding it as the Slacker Digital Suspension Tuner in recognition of all it's new capabilities. 
-Includes Slacker V4, universal off-road clip, fork adapter with two velcro cinch straps and 20 clear adhesive loops.