Seatposts and Saddles That Fit the Lectric XP4

Install note

Lectric lists the XP4 as compatible on this product page, and the page states the post is 31.8 mm. That listing is also the best evidence available for the frame's own seatpost diameter, because Lectric does not publish it in the bike specifications. Note the rider weight limit of 220 lbs, which is lower than the bike's total payload rating and is the real constraint for heavier riders. Two XP4 owners now corroborate the size from their own bikes rather than from the listing: one pulled the factory-upgraded post out and found 31.8 stamped on it, and another opens an XP4 seatpost thread with the same figure and the observation that it makes aftermarket suspension posts awkward to buy. Owners of new XP4s running this post report no complaints after a hundred miles beyond limited fore-aft adjustment on the saddle clamp.

official · reddit · reddit

Install note

Sold in 31.8 mm among other sizes, which is the diameter Lectric's own accessory page implies for this frame. That is the whole basis for the verdict, and it is worth being blunt about how thin it is: no owner has measured an XP4 seat tube, and one published review of the bike gives a different figure. Order the size only after you have measured, and treat this as a post that CAN be bought in the right size rather than one confirmed to fit.

official

Install note

Be clear about what is doing the work in this verdict. Lectric sells a 31.8 mm suspension post and names the XP4 as compatible; this post is sold only in 31.8 mm; the two numbers agree. That is a manufacturer claim on the frame side matched to a single published size on the part side, which is a better position than most of this category manages, and it is still not a measurement of your bike. Two XP4 owners independently report 31.8 for their own bikes, one of them reading it stamped on the post he removed, so the figure has owner support as well as the accessory listing. Against that, one published review of the XP4 states a different diameter and Lectric never puts a seatpost size in the bike specifications at all. Measure before you order if a caliper is anywhere near you.

official · reddit · reddit

Install note

Plan on a shim, and budget for it as part of the price. A rider fitting an NCX to an XP-generation Lectric needed a spacer to take up the difference, and the listing we verified is sold at 27.2 mm, which is smaller than the 31.8 mm the Lectric accessory page establishes for this frame. That gap is exactly what a reducing sleeve exists to close, and the one ranked below this post is sold in that pairing. The XP4 side of the equation is still the accessory page, since the bike's specifications do not state a diameter, and the fitting report comes from an earlier XP rather than an XP4. Treat the shim as expected rather than as a sign something went wrong.

official · forum · review

Install note

This is the pairing part rather than a standalone purchase, so the verdict describes the combination. The Suntour post above is sold at 27.2 mm, the Lectric accessory page puts this frame at 31.8 mm, and a rider fitting that post to an XP-generation Lectric needed a spacer to close exactly that gap. An XP4 owner opening a thread on this problem reaches the same conclusion unprompted and says he will be going the shim route. Two cautions. Nobody has published a caliper measurement of an XP4 seat tube, so buy the shim after you have confirmed your own post size rather than before, and a shim adds a joint where there was none, which is one more place a post can slip if the clamp is not properly tightened.

official · forum · reddit

Install note

Recommended for the XP4 by a site that covers the bike, and a saddle swap avoids the uncertainty that surrounds seatpost diameter here, since it mounts to the rail clamp on whatever post is already fitted. Being straight about the evidence: this is one publication recommending it, and we have not found an XP4 owner thread discussing this saddle specifically.

review