The information provide about bikes is to be used as a general guideline, not a bible. Exact sizing of bikes and parts varies from Mfg. to Mfg. as clothes do. Try a few bikes on for size, see what you like best. Never forget that it's the rider ability that wins races, not what bike they ride. Get on your bike and have fun. That is what BMX is about.
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BMX RIDER BIKE SIZING Guidelines |
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|
Rider |
Frame |
Top Tube |
Stem |
Bar |
Bar |
Crank |
Gearing |
|
4'0" & under |
Micro-Mini |
15"- 15.5" |
Mini |
2"-2.5" |
20"- 21.5" |
See Chart |
See Chart |
|
4'0"-4'6" |
Mini |
15.5"- 16.5" |
Mini |
2"-3.5" |
21"- 23" |
See Chart |
See Chart |
|
4'4"-4'10" |
Junior |
16"- 17.5" |
Mini |
3"-4.5" |
22"- 24.5" |
See Chart |
See Chart |
|
4'8"-5'4" |
Expert |
17"- 18.5" |
Pro |
4.5"-6" |
24"- 26" |
See Chart |
See Chart |
|
5'2"-5'8" |
Expert XL |
18"-19" |
Pro |
6"-7.5" |
26"- 27" |
See Chart |
See Chart |
|
5'6" - 5'10" |
Pro |
18.5"- 19.5" |
Pro |
7"-8" |
27"- 28" |
See Chart |
See Chart |
|
5'10"-6'1" |
Pro XL |
19"-21" |
Pro |
7"-8" |
17"- 28" |
See Chart |
See Chart |
|
6' & over |
Pro XXL |
20.5" & over |
Pro XL |
7"-8" |
28"- ?" |
See Chart |
See Chart |
|
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CRANK SIZING CHART GUIDELINES |
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|
Riders Inseam |
20" |
21" |
22" |
23" |
24" |
25" |
26" |
|
Crank Length |
140mm |
145mm |
150mm |
155mm |
160mm |
162mm |
166mm |
|
Riders Inseam |
27" |
28" |
29" |
30" |
31" |
32" |
34" |
|
Crank Length |
171mm |
175mm |
177mm |
180mm |
182mm |
185mm |
190mm |
|
|
|
| 0 – 85# | |
| 86 – 100 | |
| 101 – 120 | |
| 121 – 150 | |
| 151 – 200 | |