Triumph's pre-unit twin-cyclinder motorcycles were produced from 1938 to 1962, with engine sizes of 350cc, 500cc and 650cc. Ridden both on the road and in competition , the bikes formed the basis for Triumph's success through the 1940s to the 1960s. With iconic names such as Speed Twin, Tiger 100, Trophy and Bonneville, the pre-unit Triumphs came as sports bikes and tourers. With their superb styling and reliable engines, there were a favourite both at home and abroad. Triumph Pre-Unit Twins looks at the history and development of these bikes, and describes the various models that make up the range. It gives a detailed technical analysis of each model. Interviews with past and present owners give riding impressions of the bikes both today and back in the 1960s.

132 pages, 71 black & white illustrations, size 5.5 x 8.5 inches. Originally published under the title The Book of the Triumph Twins by W.C. Haycraft, this book is one of The Motorcyclist's Library series published in the USA by Floyd Clymer by arrangement with the original publishers Pitman Ltd. of London, England. It includes complete technical data, service and maintenance information and detailed instructions for the repair and overhaul of the major mechanical and electrical components for all Triumph twins from 1956 through 1969 except the T100T & T120R models. There is adequate detailed text and diagrams to assist in major refurbishing such as an engine rebuild or even a complete renovation. Applicable to all 3TA, T90, 5T, 5TA, T100, T100A, T100S/S, 6T, TR5, TR6, TR6S/S, T110 & T120 350cc, 500cc & 650cc Triumph pre-unit & unit construction twins built from 1956 through 1969. Does NOT cover the T100T or T120R variants. This publication has been Out-of-print and unavailable for many years and is becoming increasingly more difficult to find on the secondary market and we are pleased to be able to offer this reproduction as a service to all Triumph motorcycle enthusiasts worldwide.

These immortal motorcycles, powered by Triumph's magnificent parallel-twin engine, are probably the most popular and sought after classic bikes in the world--so for most owners and potential buyers the question of originality is very important. The problem is, this information can be hard to find, but in this book long-time Triumph expert and author Steve Wilson provides the answers, backed up by detailed colour photography of outstandingly original examples of Speed Twins 1938-58, Tiger T100s 1939-58, Thunderbirds 1950-62, Tiger T110s 1953-61, and T120 Bonnevilles 1959-62. Mechanical components, frame, suspension, brakes, electrics, wheels, metalwork, instruments, badging, trim and colours and finishes are all covered, with some 300 specially commissioned photographs pinpointing correct original equipment and specification.

As popular as the Triumph Twins were in the 60s and 70s, they are quite possibly more popular now. The new book from Wolfgang Publications offers complete start-to-finish assembly and restoration sequences on two Triumph Twins, a 1963 Bonneville and a 196

Haynes disassembles every subject vehicle and documents every step with thorough instructions and clear photos. Haynes repair manuals are used by the pros, but written for the do-it-yourselfer.

Triumph Motorcycle Restoration - Pre-Unit, takes a thorough look at what is required to restore a Triumph 650cc twin built before 1963. The book includes two, start-to-finish restorations: one done on a 1959 Bonneville and the other on a 1956 TR6. Han