| Frame size (in) | 16.5 | 19.0 | 21.0 | 23.0 |
|---|---|---|---|---|
| A/ Seat tube length (mm) | 419 | 483 | 533 | 584 |
| B/ Effective top tube length (mm) | 593 | 612 | 623 | 634 |
| E/ Chainstay length (mm) | 450 | 450 | 450 | 450 |
| F/ Wheelbase (mm) | 1 087 | 1124 | 1136 | 1147 |
| G/ Head tube length (mm) | 110 | 120 | 140 | 140 |
| BB Shell size (mm) | BC 1.37*24 / 68 | |||
| Head tube size (mm) | 1 1/8-1.5” Taper(44mm/56mm) | |||
| Seat post diameter (mm) | 31.6 | 31.6 | 31.6 | 31.6 |
| Seat clamp diameter (mm) | 34.9 | 34.9 | 34.9 | 34.9 |
| Front derailleur diameter (mm) | 34.9 | 34.9 | 34.9 | 34.9 |
| Material | 71 | 70 | 70 | 70 |
| Handlebar Width (mm) | 700 | 700 | 700 | 700 |
| Stem Length (mm) | 90 | 90 | 110 | 110 |
| Crank Length (mm) | 170 | 175 | 175 | 175 |
| Seatpost Length (mm) | 350 | 350 | 350 | 350 |
Frame size: from the middle of BB shell to the end of seat tube
Rock Machine is registered trade mark of BIKE FUN International. © BIKE FUN International, 2025. All rights reserved.
