A BMX stem is what connects the handlebars and forks to the frame.
Grab the yellow pages, or do a net search for painters + your city. You can try powdercoating too. Powdercoat gives a strong coat that don't chip easily. Beware that for a good result all the components has to be removed from the frame, and the frame has to be prepped(sanded, media blasted, cleaned...), and this will cost you some. DIY rattle can paint jobs rarely get as strong as professional paint jobs, which means paint that chips and take scratches easily - not what you want for a BMX
just use some spray paint
The frame
Unbolt everything from old frame, assemble on new frame, done.
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The best options for a durable and protective BMX frame pad are typically made of high-quality materials like neoprene or foam, designed to absorb impact and protect the frame from scratches and dents. Look for brands known for their durability and secure fit to ensure maximum protection for your BMX frame.
Roughly 5 lbs.
Sunday funday
To determine the size of BMX frame you need for your bike, measure the distance from the center of the bottom bracket to the top of the seat tube. This measurement will help you choose the appropriate frame size for your height and riding style.
A 400ex frame colour is a shiny metallic silver frame paint.
All "true" BMX bikes are built for 20" wheels, which makes them very similar in size.