Bikes and frames
| Micro | Mini | Junior | Expert | Expert XL | Pro/JR Pro | Pro XL | XXL | |
|---|---|---|---|---|---|---|---|---|
| Rider weight | 30 - 55lbs | 40 - 65lbs | 60 - 75lbs | 70 - 95lbs | 70 - 95lbs | 100 & up | 140 & up | 160 & up |
| Rider height | Under 3'10" | 3'10" - 4'4" | 4'4" - 4'8" | 4'8" - 5'0" | 5'0" - 5'4" | 5'4" - 5'6" | 5'4" - 5'9" | 5'9" Plus |
| Frame length | 16.25" | 17.5" | 18.5" | 19.5" | 20" | 20.5" - 20.75" | 21" - 21.25" | 21.5" Plus |
| Crank length | 115-125mm | 135-140mm | 150-165mm | 165-170mm | 170-172.5mm | 172.5-175mm | 175-177.5mm | 180mm |
| Stem size | 0 Reach | 27-35mm | 35-40mm | 40-45mm | 45-55mm | 48-53mm | 53-58mm | 53-63mm |
| Bar size | 1.5"-2.0" | 2.0"-3.5" | 4.0"-5.5" | 6.0"-7.0" | 6.5"-7.5" | 7.5"-7.75" | 8.0" | 8.25"-8.5" |