Sizing Charts for BMX Parts
SIZING CHARTS
THESE CHARTS HAVE BEEN DEVELOPED TO HELP TO GUIDE YOU TO PURCHASE THE RIGHT SIZE EQUIPMENT.
THESE GUIDELINES WORK ON SOME OF THE FASTEST RACERS OUT THERE, BUT KEEP IN MIND THAT THEY ARE GUIDELINES.
| CRANK ARM CHART | |||||||||||
| CRANK SIZE | 135 | 140 | 145 | 150 | 155 | 160 | 165 | 170 | 175 | 180 | 185 |
| INSEAM LENGTH | TO 15" | 15 to 16 | 16 to 17 | 17 to 18 | 18 to 20 | 20 to 24 | 24 to 28 | 28 to 30 | 30 to 32 | 32 to 34 | 34 & up |
A common MISTAKE is to buy crank arms that are too long!!! Arms that are too long make you swing your bike side to side, 'wag your tail' and ride a zig-zag line instead of a straight line. Arms that are too short don't give you enough leg extension, therefore not enough power. BUY THE RIGHT SIZE FOR YOUR LEGS!
| SUGGESTED FRAME SIZE CHART | ||
| SIZE | TOP TUBE | HEIGHT |
| MICRO MINI | 15.25" to 16.50" | UP TO 4' |
| MINI | 16.75" to 17.50" | 4' to 4' 4" |
| JUNIOR | 17.75" to 18.50" | 4' 3" to 4' 7" |
| EXPERT | 18.75" to 19.50" | 4' 6" to 5' 5" |
| PRO | 19.75" to 20.50" | 5' 4" to 5' 8" |
| PRO XL | 20.75" to 21.50" | 5' 8" & UP |
Frame size will vary slightly with riders overall body size & build.
| Wheel/Tire Sizing Chart | |||
| Rider Weight | Rider Age | Recommended Wheel/Rim Size |
|
| 55lbs & below | Under 5 | 18 x 1" | |
| 55-80lbs | 5 to 10 | 20 x 1-1/8" 24 x 1-1/8" |
|
| 80-115lbs | 9 to 12 | 20 x 1-3/8" 24 x 1-3/8" |
|
| 115-145lbs | 12 to 14 | 20 x 1.50 24 x 1.50 |
|
| 145lbs + | 14 & up | 20 x 1.75" 24 x 1.75" |
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Tire Size Corresponds with rim size shown on chart above. For riders who weigh 145lbs or more should run atleast a 20 x 1.75 tire on the front wheel.
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Clipless Shoes
| Shoe Euro/US Sizing Chart | |
| Sizes based on 661 Mens Shoe | |
| Euro Size | US Size |
| 33 | 1.5 |
| 34 | 2 |
| 35 | 3 |
| 36 | 4 |
| 37 | 4.5 |
| 38 | 5.5 |
| 39 | 6.5 |
| 40 | 7 |
| 41 | 8 |
| 42 | 8.5 |
| 43 | 9 |
| 44 | 10 |
| 45 | 11 |
| 46 | 12 |
| 47 | 12.5 |
| 48 | 13 |
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