Fascinating... and horrifying at the same time!

[Easy-X]

From my favourite Indian bodgers:

How to make Home Made Dirt Bike | Building Off road Trail bike
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Royal Enfield Continental GT 535, Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[Pete.]

That frame looks strong enough to use for a bridge. I dunno about the steering head angle though.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Easy-X]

TBF it would looked better if they'd used tube instead of box but then you'd need a circular cutter setup for the ends.
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Royal Enfield Continental GT 535, Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter