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What Is Perimeter Frame in Bike?


The perimeter frame, also known as the Twin Spar frame, is one of the most popular choices among performance sports bikes due to its suitability for high-performance motorcycle applications. This type of motorcycle chassis reduces rigidity as its steering head joins the swing arm in the shortest distance possible. The beams entering the steering head with the swing-arm are stiff, light, and surround the engine. Earlier, these were made of steel; now, almost all modern perimeter frames are made of lightweight aluminum.

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