How to Convert Your Mountain Bike to a Single Speed
To convert a mountain bike into a single speed, one needs to remove the derailleur, cassette, and shifters, which are unnecessary for a single speed bike. The chain length should be adjusted for the new gearing, and wheel spacers may need to be added to the rear hub to achieve the proper chain line. The rear wheel can also be converted to a track-style or single-speed specific hub. The bike may also require a new chainring and crankset to match the new gearing. Once the necessary modifications are complete, test ride the bike to ensure it runs smoothly.