Shotgun Pro Seat Part Trek Knock Block Adapter

If your bike features a Trek Knock Block headset system, this adapter is a must - have to fit your Shotgun Pro. To install the Shotgun Pro on a Trek bike with a Knock Block, you need at least 30mm of clearance under the stem (from the headset to the stem's bottom). The adapter replaces one 10mm spacer, the Shotgun Pro spacer (included with your Pro seat) replaces another 10mm spacer, and one of your own 10mm spacers stays right under the stem. If your stem clearance is less than 30mm, you might need to make more space under the stem for the Shotgun Pro.

To use this adapter, first, check if your bike has a Trek Knock Block headset system. If it does, make sure there's at least 30mm of space under the stem. Replace one of the 10mm spacers with the Trek Knock Block adapter and another with the Shotgun Pro spacer that comes with your seat. Keep one of your own 10mm spacers under the stem. If there's less than 30mm of clearance, you'll need to create more space. As for maintenance, regularly check that all the spacers and the adapter are securely in place. Wipe them clean if they get dirty, and if you notice any signs of wear or damage, replace them right away.