Triumph Motorcycle Restoration: Pre-Unit, takes a thorough look at what is required to restore a Triumph 650cc Twin built before 1963. The book is based on two, complete, start-to-finish assemblies, one done on a 1959 model and one on a 1956 Triumph TR6. Each assembly is documented with hundreds of color photographs. Copy includes all necessary details including torque specifications. The book also includes the complete assembly and overhaul of both the 650cc engine and the four-speed transmission. Triumph Motorcycle Restoration: Pre-Unit offers the Triumph motorcycle enthusiast 144 pages and over 450 photos explaining how to buy, build and restore a Triumph 650cc twin manufactured before 1963.