The 2001 GT Thumper. 100% 4130 Cr-Mo Frame. Cr-Mo Fork w/ 0.125" Thick Steer Tube And 1-3/8" Blades. GT Tubular Cr-Mo Three Piece Cranks w/ Sealed BB. Cr-Mo Four Piece F.U.B.A.R. Handlebar w/ 1 " 0.0. Main Bar. GT CNC Sealed Bearing Mohawk Hubs w/ 14mm Axles Front + Rear. Colors: Martian Green, Starlight Blue.
Headset Size
1 1/8"
Seatpost Size
31.6mm
Top Tube Size
unknown
Original Colours
S0X00000 S1Y00000
Made in Taiwan.
Unconfirmed. Second digit in the serial indicates year of production. 2000 or 2001. X and Y in the example above indicates production month A to L for Jan to Dec.
Bikes made in Taiwan usually had an 5-8 month production and shipping timeline before they were sold in bike shops around the world. Bikes welded in the later months of the year would normally be made for the following year.
