| Retul Measurement | B3 Guru Measurement | Calculation |
|---|---|---|
| Saddle | ||
| Saddle Thickness (tape measure) | ||
| Clamp To Nose (half saddle length to nose) (tape measure) | ||
| Saddle Rail Length (Tape Measure) | ||
| Half Saddle Rail Length | ||
| Handlebar Stack | ||
| Handlebar Reach | ||
| Handlebar Drop | Negative Number is above saddle height | |
| Saddle Set Back | Negative Number is in front of BB | |
| Clamp to nose + Saddle Set Back | SX - Saddle Horizontal | |
| Handlebar Reach - Saddle Set Back | HX - Handlebar Horizontal | |
| Handlebar Stack + 15mm + Handlebar Drop - Saddle Thickness | SY - Saddle Vertical | |
| Handlebar Stack | HY - Handlebar Vertical |