GT Bike Hubs - Old School BMX and Freestyle

GT Bicycles has been around since 1979 founded by Richard Long and Gary Turner. They started making BMX Hubs for production in the early 80's. I'm sure they were making prototype parts earlier than that. There were a bunch of models over the years including GT Race Lace, GT Low Flange Race Hubs, High Flange 48 hole Freestyle Hubs, GT Mohawk, and GT Rhythm System. There are many versions and generations of some of those model hubs. I will try digging up as much info and pictures as I can find to create a GT HUB Timeline of sorts. There will also be a few Rhythm System Rims and wheels posted up on this page as the last mid school offering by GT.

GT Mohawk Hi-Flange Hubs 36 hole from a Rhythm System Mid School BMX Wheelset. Unfortunately the rear wheel had a huge hop and was not salvageable. That said the wheelset was disassembled. Solid steel axles ( 3/8″ x 26tpi ) with sealed cartridge bearings. This specific hubset was the lower end version Rhythm system hub and were made in Taiwan I believe. Very nice quality but not machined as much as the USA version. Standard anodized Black aluminum hub shells with Lazer etched logos. Flip flop design for small or large freewheels. Would have been stock on mid end GT race bikes such as the year 2000 Power Series 3.0 and the GT Y2K Pro Series 20″ and the 24″ Pro Series cruiser. Also came on the 2001 GT Power Series XL Plus.

GT Rhythm System singlewall Aluminum rim standard 20″ version. Even though it’s only single wall the design is fairly stout, and does have eyelets. Looks to be anodized black with very little sun fading if any. This is a Mid School BMX rim about year 2000-2001 or so. Here is a video of this rim before taking it apart.

GT third generation BMX Hubs. These hubs were made in the early to mid 1990’s and are sealed cartridge bearing. They have hollow steel axles and steel hub locknuts. While the hourglass shape still passes to the 3rd gen set the shape has gotten skinnier in the middle than the 2nd gen hubs. Very nice Mid School BMX Flip Flop hubset mostly found in 36 hole count, with a low number of 32 hole version made. Axle nuts were swivel washer design.


GT Mohawk 36 hole Hubs ( non Flipflop ). These hubs could be 4th generation and made between the early 1990’s ( 1993? ) to the late 90’s. They have looseball bearings and 3/8″ solid steel axles. Would have come on entry level bikes such as Dyno Nitro and Sonic and mid level bikes such as GT Mach One and Interceptor. Very nice hubs but need to be maintained regularly to keep them nice. The plastic dirt seal easily lets water and mud into the bearing chamber and generally is not very effective. That said there is almost zero bearing drag from the dirt seal. These hubs are generally in poor condition when I find them as they mostly came stock on $200-$400 bikes that usually do not get maintained. This set here was originally anodized silver, which was removed and custom polished. The logos are lazer engraved and are still clearly visible. 

Gt Chain Tensioners that fit right in with the Mohawk era of hubs. GT bikes that were pictured with these tensioners were the Power Series and Pro Series from the year 2000, and the same for 2001 with the addition of the Mach One. They might have been stock equipment on the Speed Series as well, but the catalog doesn’t show them on that bike. Nice mid school BMX parts for sure. Great for protecting a BMX frame. Standard 3/8″ axle hole and are a direct fit to GT frame dropouts. They most likely didn’t come stock with the alloy washers.

GT Rhythm System Wheelset. These wheels were pulled from a 1999 GT Speed Series Team bike ( Box Chainstays ). Cartridge bearing hubs with solid steel 3/8″ axles, front slotted. Standard 26T pitch threads on both axles. Flip flop design on the rear hub, which will accept most BMX Freewheels in the 14t-22 tooth range. Super wide doublewall aluminum rims with eyelets, and stainless steel spokes. This was the best wheelset GT produced for the mid school BMX line.