ER Motorcycles Grinder BMW R 100 R is hardly an ugly duckling

Ugly Boxer now a trendy custom

Once considered an ugly duckling, the BMW twin-opposed “Boxer” engine is now perhaps the most attractive engine for custom motorcycle builders. The bulbous block draws the eye as the heads stick awkwardly out of both sides of the bike. Truly ugly, yet somehow strangely alluring! The first motorcycle with a boxer engine was the 1923 BMW R …

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