Mach One Expert
Entry to BMX Racing shouldn’t cost an arm and a leg. The Mach One Expert is made to fit riders 4'8"-5'4".
- Influence by Speed alloy frame with reverse dropouts
- GT Top Load Stem
- GT Alloy Forged 3pc, Square Taper, 130 BCD Spider
Mach One Expert
The Mach One Expert is made to fit riders 4'8"-5'4"
Track ready entry level race bike
Allows riders to test the waters of racing without breaking the bank
Upgradeable Aluminum Race Frame
Influenced by the Speed Series frame allows riders to take the bike spec from amateur to pro
Frame
frame
GT Mach One Race MK2, 6061 Alloy, Euro BB, Reverse Dropouts, V-Brakes, 1-1/8" Integrated H/T
sizes available
EXPERT
fork
GT BMX Race, Hi-Ten Steel 1 1/8" Steerer, 312mm A/C, 3/8" Dropouts
wheel size
20
Wheels
rims
Alloy Double Wall, 28h
front hub
Steel Body, 28h, 3/8" Axle
rear hub
Steel Flip Flop Thread-on Body, Freewheel, 28h, 3/8" Axle
front tire
Kenda Race, 20 x 1-3/8"
rear tire
Kenda Race, 20 x 1-3/8"
spokes
Stainless Steel, 14g
Drivetrain
rear cogs
16T Freewheel
chain
KMC S1
crank
GT Alloy Forged 3pc, 165mm, Square Taper, 130 BCD 42T Steel Chainring
bottom bracket
Threaded Square Type
pedals
GT Mini Size Platform, PP Material
Cockpit
handlebar
GT Race, Steel, 6.5"H x 26"W, 8° Back, 4° Up, 19mm O.D. Cross Bar
stem
GT Top Load, 40mm
grips
GT Statement
headset
1-1/8" Sealed Integrated (41.8 x 45)
seatpost
Combo Alloy 22.2 Integrated
saddle
GT Uni Mini Padded
Brakes
brakes
Alloy V-type
brake levers
Alloy V-type
Geometry
| Sizes (in) | Expert |
|---|---|
| Top tube actual | 18.75 |
| Head tube angle | 73 ° |
| Seat tube angle | 72 ° |
| Standover | 7 |
| Head tube length | 4.33 |
| Wheelbase | 34.86 |
| Front center | 21.82 |
| Chainstay length | 13.39 |
| Bottom bracket height | 11.5 |
| Seat post diameter | 0.875 |
| Axel to crown | 12.2 |
| Dropouts | 10mm |
| Head tube type | Integrated |
| Brake mounts | V-Brake |
| Rider area | 21.46 |
| Bottom bracket type | Threaded |
| Fork rake | 1.3 |
| Axel to crown | 12.2 |
Fit Guide
- Micro
-
2'0" - 4'0"
- Mini
-
4'0" - 4'4"
- Junior
-
4'3" - 4'7"
- Expert
-
4'6" - 5'5"
- Expert XL
-
5'2" - 5'6"
- Pro
-
5'4" - 5'8"
- Pro XL
-
5'7" - 6'0"
- Pro XXL
-
6'0" - 6'5"
- Pro XXXL
-
6'0" - 6'5"
- Pro XL 24"
-
5'6" - 6'5"
