softail frames that have no stretch.
Rigid Frames:
In most cases, rigid motorcycle frames are stretch frames that are angled upward. Where other motorcycle frames have both wheels connected to the motorcycle frame through a suspension arrangement, rigid motorcycle frames often forgo the rear suspension.
FRX Frames:
If you're building a racing bike or dirt bike or are going to be riding on rugged terrain and need durability and extra suspension, FRX motorcycle frames may be your best bet.
The Weight Factor:
Make sure to consider the weight of the motorcycle frame before you buy. The weight of the motorcycle frame makes a big difference in how smooth of a ride your custom chopper will have; generally the heavier the frame, the smoother the ride. However, if you're going to be drag racing, you might favor a lighter weight.
Motorcycle frames are literally the backbone of the chopper. You'll want to be selective with all of the parts for your custom chopper, but when it comes to the motorcycle frame be sure to devote a little more time to research, asking questions, and getting opinions. The motorcycle frame is what holds the entire bike together and choosing a quality, heavy duty motorcycle frame is well worth the time spent shopping around.
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