
For the technology-driven racer, there is only one choice for the ultimate BMX bike. Tested around the world by Team GT, the 1998 Speed Series line offers race-proven results, uncompromised performance and U.S.A. construction to create the most advanced bicycle available. All Speed Series bikes start with a GT U.S.A.-made 6061 aluminum frame featuring Box chainstays, GT three-piece cranks and are finished with a durable ball burnished luster.
All components on the Speed Series Team are worthy of mention, including the embroidered GT saddle with CrMo rails.
You know about the 6061 aluminum frame and the silky-smooth cartridge sealed bearing crankset, but the true touch of class, is in the details. Such as the gorgeous aluminum bearing spacer, consistent welds and lustrous ball burnished finish.
GT U.S.A.-made 6061 aluminum frame with Box Series chainstays • CNCd head tube, seat bridge, seat tube collar, bottom bracket shell & dropouts • Slammed geometry with shorter fork blades for improved stability x belter acceleration • GT "muscle" fork with cold forged aluminum crown • Mavic XX double wall rims, Wheelsmith butted stainless steel spokes and alloy nipples • Shimano DX cassette hubs, SPD pedals and direct-pull brake • GT U.S.A.-made Piston stem • GT U.S.A.-made three piece CrMo cranks with sealed-bearing bottom bracket GT U.S.A.-made Overdrive Lite chainwheel • Colors: Ball Burnished.
Headset Size
1 1/8"
Seatpost Size
Below
Top Tube Size
Below
Original Colours
| HT˚ | ST˚ | TT | CS | WB | BB | FC | SP |
| XXL | |||||||
| 73˚ | 70˚ | 21 | 15.75 - 17 | 39 - 40.25 | 12 | 23.5 | 27 |
| XL Plus | |||||||
| 73˚ | 70˚ | 21 | 15 - 16.4 | 38.3 - 39.7 | 12 | 23.5 | 27 |
| XL | |||||||
| 73˚ | 70˚ | 20.25 | 15 - 16.4 | 37.6 - 38.95 | 12 | 22.75 | 27 |
| Expert | |||||||
| 73˚ | 69.5˚ | 18.9 | 13.75 - 14.9 | 34.6 - 35.8 | 11.5 | 21 | 22.2 |
All measurements in inches. WB = Wheel Base Length, CS = Chain Stay Length, HT˚ = Head Tube Angle, ST˚ = Seat Tube Angle, BB = Bottom Bracket Set Height.
MM970000 MM980000
Made in USA.
Third and fourth digits in the serial indicate year of production. 1997 or 1998. MM in the example above indicates production month
Bikes made in USA usually had an 4-6 month production and shipping timeline before they were sold in bike shops around the world. Bikes welded in the second half of the year would normally be made for the following year.
For more detail on what the serial number means on your mid school GT BMX, check out our easy-to-follow serial number guide.