Norco Range 2018 Dropper Fit: Separate Post, Collar and Travel
Norco Range 2018 dropper fit involves three different dimensions before a replacement can be assessed: the post diameter, the seat collar and the post's travel. A number copied from the wrong row can describe a different component. Use the historical frame table to identify the interfaces, then measure the actual bicycle and proposed post.
Separate the Norco Range 2018 dropper fit numbers
The Range Carbon specification table (https://www.norco.com/downloads/bike-spec-sheets/range-carbon-small-parts.pdf) gives 31.6 mm for the seatpost in both C7 and C9. The seatpost-clamp entry is separate: part 915000-002, with 34.9 mm in brackets. These are not competing sizes for the same tube. Keep “post” and “collar” written beside their respective measurements in a shopping list or service request.
The original C3 components list (https://www.norco.com/bike-archives/2018/range-c3/) names a JD Trans X post, with 100 mm travel for XS and S, 125 mm for M, and 150 mm for L and XL. That records the archived build specification. It does not state the greatest replacement travel that every rider or frame can accommodate, nor does it prove that the pictured bicycle still carries that original post.
Add the measurements the archive does not supply
Travel is the movement offered by a dropper, not the whole installed length. A replacement enquiry should therefore include the candidate post's dimensional drawing and the riding height required on the actual bike. Check how much post can be inserted and how the proposed unit's collar and mechanism affect the final position. Do not invent a usable insertion depth from the frame's nominal size.
The archived geometry can help identify the frame rather than certify the replacement. For example, both medium wheel variants list a 435 mm seat tube, but that alone does not reveal all internal restrictions or the space a particular post requires. If the necessary clearance or insertion measurement is unknown, have it checked instead of turning the original travel entry into a maximum.
The technical table lists a stealth port for an adjustable seatpost. This supports an internal-routing enquiry, but it is not proof that any cable or hose can be passed through whichever frame opening looks convenient. Record whether the proposed post uses a cable or another control arrangement and retain the correct frame-routing documentation.
Before ordering, bring together the 31.6 mm post requirement, the separate collar information, your actual saddle-height needs and the replacement manufacturer's dimensions. This creates a precise fit question. Buying by “150 mm dropper for a Range” leaves the important installed-length and routing questions unanswered.
FAQ
Is 34.9 mm the seatpost diameter?
No. The table associates 34.9 mm with the seat collar; the seatpost entry is 31.6 mm.
What original post travel is listed for medium C3?
The archive lists 125 mm for M, alongside 100 mm for XS/S and 150 mm for L/XL.
Does original post travel establish the maximum replacement travel?
No. The actual insertion space, saddle position and candidate post dimensions still need checking.
Use the GIZMO routing discussion for the frame-side cable questions, and the geometry comparison for identifying the medium variants. The Norco topic keeps these historical tasks together.
Photograph credits and permissions
Photograph 1
Original title: Norco Range.jpg
Creator: Walleater
Original source URI: https://commons.wikimedia.org/wiki/File:Norco_Range.jpg
License / permission: CC BY-SA 4.0
License / permission URI: https://creativecommons.org/licenses/by-sa/4.0/
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