Description
Authenticity & Accuracy
The 1937-1952 backbone support tube 1 inch is the period-correct replacement tube for the backbone support used in late 1937 through early 1952 Big Twin frames. Manufactured to exact original dimensions and wall thickness, it ensures a precise fit for Knucklehead and early Panhead frame restorations requiring period-correct tubing.
⚠️
Always weld according to the specifications named in our frame certificate. Deviating from the specified procedures may affect structural integrity and will void the warranty.
Shipping
Worldwide shipping available (EU, UK, US, Canada and international on request).
