Park Tool Stool Backrest Upgrade Kit For STL-1.2 & STL-3K Saddles Bluetooth & Wi-Fi: Connect to

Bluetooth & Wi-Fi: Connect to sensors

this mount unit is an essential element for professional cyclists and avid e-bike enthusiasts seeking to maximize their bike's efficiency

it ensures superior sealing capabilities

Why Choose Shimano SL-3S41

Whether you're navigating rugged trails or smooth roads

Park Tool Stool Backrest Upgrade Kit For STL-1.2 & STL-3K Saddles Bluetooth & Wi-Fi: Connect toThe STL 3K is kit that will add a back rest to the STL 1. 2 work stool. The STL 3K includes a back rest, two steel support bars, and fasteners. STL 3K FEATURES NOTE: The STl 3K will only work on the STL 1. 2 work stool. The previous STL 1 work stools will not accept the STL 3K