2020 GT

Speed Series Pro XL

A 20″ aluminum frame bmx bike with hydraulic disc brakes.
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MSRP$875
FrameAluminum
SuspensionRigid
ForkSteel
Wheels20″ Aluminum
DrivetrainSingle-speed
BrakesHydraulic Disc
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

16 mph

Speed Series Pro XL

Highest gear

(descending)

Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

GT Speed Series MK7 Elite Race Design, 6061-T6 AL, Alloy Formed and Butted Speed Metal Tubes, AL CNC/Forged Quick Change Disc Dropout System, BB86, Taper 1-1/8" to 1-1/2" Integrated H/T

BB StandardBB86/BB92, Press Fit

Fork

GT BMX Pro Race, 100% Cr-Mo 1 1/8" Steerer, Tapered 31.8x1.2mm Blades, 305mm A/C, 20mm Dropouts

Bottom Bracket

BB86 Sealed Bearings

Headset

1-1/8"-1.5" Taper Integrated Design, 45X45 Degree Sealed Bearings

Stem

Promax Impact Top Load, 53mm

Handlebar

GT Speed Cr-Mo 8.375"H x 29"W, 8° Back, 4° Up, Taper Cross Bar

Saddle

BOX Echelon

Seatpost

Alloy integrated w/ Saddle, 27.2 x 135mm

TypeRigid

Pedals

GT Low Profile FS Platform Design, PP Material, Boron Axle

Grips

GT Statement Double Lock-on Grips

Groupset
Crank

GT Forged Alloy 2pc. 180mm Arms, 24mm Hollow Cr-Mo Spindle, 44T AL CNC Chain Ring, Alloy Chain Ring Bolts

Cassette

16T

Chain

KMC Z1 Narrow, 3/32"

Brakes

Promax Hydro Disc Rear, 140mm Rotor (Rear Only)

TypeHydraulic Disc

Brake Levers

Promax Hydro Disc Rear, 140mm Rotor (Rear Only)

Wheels
Rims

Speed Series Aero, double wall, 36h

Spokes

Stainless Steel, 14g

Front Hub

GT Speed Series, Alloy CNC body, Sealed Bearings, 36h, 20mm Alloy Thru Axle

Rear Hub

GT Speed Series Disc Cassette, Alloy CNC body, 4 Sealed Bearings, 6 pawl 72point Alloy Shimano Cassette, 36h, 3/8" Female Allen Bolts w/ Alloy Washers

Tires

Kenda Kompact Pro Race, 20 x 1.75"

Rider Notes
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Last updated March 3
Not listed for 1,501 days