Mach One 16

Entry to BMX Racing shouldn’t cost an arm and a leg. Our smallest Mach One offering with 16" wheels. Ideal for a rider 3'6" & under.

  • Influence by Speed alloy frame with reverse dropouts
  • GT Front Load Stem
  • Hi-Ten Steel Fork 
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Out of stock

Shipping Policy

Free shipping on all orders for bikes, apparel, parts & accessories for any order in the United States. 

*Please allow for 5-7 days of transit time as all orders are shipped via ground shipping.

*If an order is placed on Friday, please allow 2-3 days for processing. 

Please reach out to if you have any questions.

Return Policy

Returns are accepted within 30 days of delivery.


  • The bike or part must be in its original packaging to receive a 100% refund.
  •  If product is unused but protective packaging has been removed or has major damage, we will refund 75% of the order.
  • We do not accept returns on apparel.
  • Please allow for 7-10 days to process the return and issue refund.

*Protective packaging includes: foam, cardboard, zip ties, plastic axle covers, warning decals and reflectors.

Please reach out to to start a return.

Contact Us

This bike will come partially assembled. Tools needed for assembly are not included. Please refer to these instructions and build video on how to assemble the bike. This bike is not eligible for the GT Connect build program.

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Influenced by the Speed Series frame allows riders to take the bike spec from amateur to pro


frame GT Mach One Race MK2, 6061 Alloy, American BB, Reverse Dropouts, V-Brakes, 1-1/8" H/T
sizes available One Size
fork GT BMX Race, Hi-Ten Steel 1 1/8" Steerer, 264mm A/C, 3/8" Dropouts
wheel size 16


rims Alloy Single Wall, 28h
front hub Steel Body, 28h, 3/8" Axle
rear hub Steel Flip Flop Thread-on Body, Freewheel, 3/8" Axle
front tire Innova, 16 x 1.75"
rear tire Innova, 16 x 1.75"
spokes Stainless Steel, 14g


rear cogs 16T Freewheel
chain KMC S1
crank Steel Forged 1pc., 114mm Arms, 36T Steel Chain Ring
bottom bracket American BB
pedals GT Mini Size Platform, PP Material


handlebar GT Race, Steel, 3"H x 17.7"W
stem Alloy Front Load, 37mm
grips GT Junior
headset 1-1/8" Threadless, Steel
seatpost Combo Alloy 22.2 Integrated
saddle GT Uni Mini Padded


brakes Alloy V-type
brake levers Alloy V-type
Please note that, based on component availability and other factors, specifications are subject to change without notice.

Fit Guide

2'0" - 4'0"
4'0" - 4'4"
4'3" - 4'7"
4'6" - 5'5"
Expert XL
5'2" - 5'6"
5'4" - 5'8"
Pro XL
5'7" - 6'0"
6'0" - 6'5"
6'0" - 6'5"
Pro XL 24"
5'6" - 6'5"


Sizes (in) One Size
Top tube actual 15.5
Head tube angle 73° °
Seat tube angle 71° °
Standover 6.28
Head tube length 3.54
Wheelbase 28.94
Front center 17.34
Chainstay length 9.45
Bottom bracket height 8.1
Seat post diameter 0.875
Axel to crown 10.39
Dropouts 10mm
Head tube type A-Headset
Brake mounts V-Brake
Rider area 17.6
Bottom bracket type American
Fork rake 1.3
Axel to crown 10.39

GT Tech Book

GT Owner's Manual