{"product_id":"9781847973238","title":"Triumph Pre-Unit Twins","description":"\u003cp\u003eTriumph'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.\u003c\/p\u003e","brand":"The Crowood Press UK","offers":[{"title":"Default Title","offer_id":47050742628592,"sku":"9781847973238","price":39.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/9781847973238_p0.jpg?v=1763749221","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9781847973238","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}