The nozzle on the bottles fit onto tubeless valves for direct injection of sealant into the tyre

You can probably leave them alone unless they're showing signs of corrosion and you want to get some freshies in there

Who's this item for: Road/Gravel/XC Marathon riders looking for a lightweight saddle with good vibration damping

Those looking for a good value alternative to Shimano 12-speed cassettes will appreciate the wallet-friendly price point

The stretch fit will make sure you feel comfortable on the bike and the long sleeve can be worn with elbow pads

TLD Flowline SE MIPS Helmet - XL-2XL - Radian Burgundy-Charcoal netsuite-webdata-created The nozzle on the bottlesDETAILS Be sure to stay safe on your bike rides with the Flowline SE Helmet from Troy Lee Designs. This half shell helmet seamlessly combines safety, comfort and style. Enjoy reliable impact absorption and a breathable airflow system with the helmet's design. Plus, the easy to use magnetic buckle ensures a secure closure every time. Conquer the mountain bike trails, or city streets, with the Troy Lee Designs Flowline SE Helmet. SPECIFICATIONS 3 Way