Park Tool BBB-4 Big Blue Book of Bicycle Repair 4th Edition The 4th Edition of Park Tool's Big Blue Book of Bicycle Repair features updated information, procedures, and techniques. The book covers everything from minor adjustments to complete overhauls. Featuring step by step instructions written by the world's leading authorities on bicycle repair, the Big Blue Book thoroughly explains and demonstrates how to perform hundreds of repairs and maintenance. Whether you are a beginner or master mechanic, this book can help you out. Park Tool Item # BBB-4Topics Include12-speed and 1x drivetrains Tubeless tires Disc brakes Electronic shifting New wheel building content Updated headset and bottom bracket standards Updated torque specifications Updated troubleshooting tables | Park Tool | Bbb-4 Big | Blue | Book Of Bicycle Repair 4Th Edition Bbb-4