Lapierre Xelius EFI Sizing: Reading the 2015 Geometry Chart
Lapierre Xelius EFI Sizing should start with the EFI chart, not with the letter printed on a modern Xelius. For a used bicycle, the useful question is how the exact historical frame compares with a position you already understand. The 2015 table supplies dimensions; it does not promise that a particular rider will fit.
Locate the Lapierre Xelius EFI Sizing reference
PDF page 107, printed pages 212–213, of the 2015 manufacturer catalogue contains the Xelius EFI geometry chart. It lists five sizes, XS through XL. Confirm the seller's frame label and model identity before selecting a column. A present Xelius SL or DRS chart is not an interchangeable source.
| Size | Stack mm | Reach mm |
|---|---|---|
| XS | 513 | 373 |
| S | 527 | 374 |
| M | 550 | 382 |
| L | 569 | 396 |
| XL | 592 | 398 |
These two rows show why moving up a letter is not a uniform change. XS to S adds 14 mm of stack but only 1 mm of reach; M to L adds 19 mm and 14 mm respectively. Those are simple differences calculated from the printed values, not a fitting prescription.
Read tube lengths alongside the position coordinates
The same size sequence gives seat-tube lengths of 460, 490, 520, 550 and 580 mm, and top-tube lengths of 520, 535, 550, 570 and 590 mm. Keep each dimension attached to its labelled row. A seller's shorthand such as “55 centimetres” leaves the measurement and model interpretation unclear.
Stack and reach describe frame coordinates; the finished hand position also depends on the installed cockpit. Ask for the actual stem, handlebar and spacer arrangement, and compare those with the bicycle you use comfortably. Do not treat a stem change as proof that every frame-size difference can be resolved.
Prepare a comparison that a fitter can use
Record the candidate's exact size and the reference bicycle's geometry separately. Include your current saddle and hand-position measurements if available. This makes the discussion about the complete setup instead of an unsupported height-to-size rule. Neither age nor a photograph establishes the correct size.
If a seller proposes an Aircode as an equivalent-size alternative, consult the 2015 Aircode versus EFI comparison; shared letter labels do not settle that question. Other historical model references are grouped under Lapierre.
FAQ: Choosing an EFI frame size
Can I choose solely from my height?
This chart does not provide a height guarantee. Use measured fit information and an assessment of the complete candidate bicycle.
Does XL add much more reach than L?
The listed difference is 2 mm of frame reach, alongside 23 mm more stack. Check both coordinates rather than assuming equal size increments.
Is this a chart for every Xelius generation?
No. Lapierre Xelius EFI Sizing here refers only to the named 2015 EFI table, not subsequent frames sharing the Xelius name.