Dyno Products made by GT Bicycles - Old School BMX and Freestyle
This page will be all about Dyno BMX bikes and parts. From the research I have done it appears that the Dyno brand was started around 1982 by Bob Morales. A few years later he sold the company to GT Bikes, so Dyno truly is an old school bicycle motocross and freestyle brand. Most of the pictures I will post up will be more mid school items as I didn’t collect and do not have many of the earlier offerings from them. A couple handlebars possibly, that’s about it for the real early items. I will post up Stems, Sprockets, Grips and whatever else I can find.
Purchased this Dyno Air Freestyle bike a few years back. It did not come with the original fork unfortunately. It was a complete bike but badly rusted with bent wheels and rotting tires. The one piece chromoly crank was bent. There really wasn’t much stock on the bike, but did come with 4th generation GT Hubs. Gave the frame a clean up and it came out decent. I used a 4-Inch Fine Brass Wire Wheel and some Mothers metal polish. This frame is not top of the line and not highly collectable. It’s 4130 Chromoly steel down tube with the rest of the tubing hi-tensile steel. That said I was ok with taking a wire wheel to the finish. Cool mid school Dyno Freestyle frame. I’m guessing this to be about a 1998, give or take a year.
Here we have a mid 90’s Dyno VFR Frameset. My guess would be a 1995 model or possibly earlier. It still has a threaded fork and caliper brake which dates the bike somewhat. This bike was in bad shape when I purchased it. Bent cranks, warped rear wheel, rust all over the place, rotting tires grips and seat. I took it all apart and chucked about 50% of the bike if not more. The frame and fork were in good shape minus all the rust and chewed up stickers. This was not a Mid School BMX restoration as it has lots of aftermarket parts that are not stock. Parts list includes Sun Big City doublewall rims, YST Conversion Bottom Bracket, Dotek Aluminum Crankarms, Redline Gooseneck, GT seat post clamp, and Chengshin Gumwall tires. Few other parts were non stock as well. Bike came out nice and rode really well. The frame geometry on this was awesome for jumping and just felt right. As a side note I did restore the frame with a Fine Brass wire wheel as this frame is Main Frame Chromoly, and not highly collectable BMX.
Dyno BMX Stem that has been custom polished. This is a standard 21mm quill gooseneck designed for a 1″ threaded fork. This type stem would have been stock on a 1992-95 Dyno VFR, and 1993-95 Dyno Sonic and possible a few others. Definitely mid school BMX only a couple years before most bikes went to a threadless fork design. Quill stems had the advantage in quick adjustability, and threadless stems had one up in keeping the headset tight and a slight weight savings in most cases. GT had a similar stem without the “D” logo. The GT stem had a hardened quill stamped GT USA, where as the Dyno stem wasn’t as nice and made in Taiwan.
DYNO BMX Sprocket 36 tooth STEEL. The paint is original and is Faded Black. Has some rust spots and pitting but is still a very nice mid school BMX part. This 36t chainwheel was stock on a 1996 Dyno VFR 16″ that was chrome with blue and yellow stickers. It had a one piece crank. Might have possibly been stock on a Dyno Blaze or 1997 VFR 16″ as well. The “D” is stamped into the steel. They also made this pattern sprocket in a larger size which was either 43 tooth or 44 tooth for the bigger 20″ wheeled Dyno NSX freewheel BMX bike.