Mountain Bike: Brake Troubleshooting
Are your brakes dragging? If so, here are the probable causes.

Mountain Bike: Maintaining SPD Clipless Pedals
The key element for any brand of clipless pedals to hold the cleat retention, is keeping the rider's foot secure and preventing accidental release.

Mountain Bike: Rear Derailleur Check Out
The first thing to check when experiencing shifting problems is the rear derailleur.