GT Speed Series Mini 20w 2021 - BMX Bike
Inspired by the Speed Series Pro models and featuring reverse rear dropouts for quick gear changes. Each model size is purpose-designed and spec'd to be lightweight, offering maximum performance to meet each racer's needs. Ideal for riders 4'6" & under.
Key Features:
- GT Pro Race Cr-Mo Fork with 1-1/8” Steerer Tube 20mm Dropout
- GT SpeedSeries Elite Race Frame with Speed Metal Tubes
- BB86 Bottom Bracket
Occasionally, without notice, manufacturers change product design and/or specifications.
Frame | GT Speed Series MK7 Junior Race Design, 6061-T6 AL, Alloy Formed and Butted Speed Metal Tubes, Reverse Dropouts, Euro BB, 1" Integrated H/T |
Fork | GT BMX Junior Race, 6061 AL 1" Steerer, 3/8" Dropouts |
Headset | 1" Integrated Design, 45X45 Degree Sealed Bearings |
Stem | GT Top Load, Cold Forged 1", 40mm |
Bars | GT Speed Alloy 2"H x 22"W, 8° Back, 2° Up |
Front Brake | Promax MV-87, 85mm Cold Forged AL Arms, Mini V-Type |
Rear Brake | Promax MV-87, 85mm Cold Forged AL Arms, Mini V-Type |
Brake Lever | Alloy V-type |
Speed | 1 |
Rims | Alloy Double Wall, 28h |
Front Hub | GT Speed Series, Alloy CNC Body, Sealed Bearings, 28h, 3/8" Female Allen Bolts |
Rear Hub | GT Speed Series Cassette, Alloy CNC body, 5 Sealed Bearings, 3 Pawl Cassette, 28h, 3/8" Allen Bolts |
Spokes | Stainless Steel, 14g |
Front Tyre | Kenda Kompact Pro Race, 20 x 1-1/8" |
Rear Tyre | Kenda Kompact Pro Race, 20 x 1-1/8" |
Seat Post | Integrated |
Saddle | BOX Echelon |
Chainset | GT Forged Alloy 2pc., 140mm Arms, 24mm Hollow/ Alloy Spindle, 38T AL CNC Chain Ring, Alloy Chain Ring Bolts |
Bottom Bracket | Euro Sealed Bearing |
Chain | KMC Z1 Narrow, 3/32" |
Cassette | 16T Cog |
Pedals | GT Mini Size Platform, PP Material |
BMX Size guide
Kids BMX Size Chart
Rider Height |
BMX |
||
Feet & Inches |
Centimetres |
Approximate Age |
Wheel Size |
3'7" - 4'0" |
110cm - 122cm |
5 - 7 years |
16" |
4'0" - 4'10" |
122cm - 147cm |
7 - 11 years |
18" |
4'10" - 6'4" |
147cm - 193cm |
11+ years |
20" |
Adult BMX Size chart
20” BMX bikes can be sized on top tube length. A taller rider will suit a longer top tube. Though some riders might wish to experiment with top tube length to suit different riding styles, below is a suggestion.
Rider Height |
Top tube length |
5’0” – 5’5” (152 – 165cm) |
20” – 20.5” |
5’5” – 5’10” (165 – 178cm) |
20.75” |
5’10 – 6’0”+ (178 – 183cm+) |
21”+ |
Cruiser BMX Sizing
BMX Bikes with wheels larger than 24” are known as cruisers and will suit riders taller than 5’0” 152cm.
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