15.5"/Small, good for someone 5'6" and under. 29er. Built this up for my son winter of 2021, he has outgrown it. He is an XC kid and its hardly been ridden. Most of the parts have gone onto another frame. Included is the frame, Fox DPX2 Performance Shock, axle, reverb 125mm dropper, seatpost clamp, Shimano PF Bottom bracket for 24mm spindle, and headset. Anyhow, its a Chinese frame from LightCarbon, and is similar to a specialized stumpjumper from a few years back. With the 210x50 rear shock the rear travel is 141.5mm. It was paired with a 150mm fork and it was a good set up. I would say this is more of a long travel trail/all mountain bike than an enduro bike, the geometry isn't crazy long or slack which is good because pretty much all the riding in Central Oregon favors this setup.  Everything is in good to excellent condition, less than 100 miles on the frame and parts.

https://photos.app.goo.gl/Mf5QDHroJqLWjwUS9

https://www.lightcarbon.com/lightcarbon-2019-new-all-mountain-suspension-enduro-frame_p125.html

LightCarbon 2019 new all-mountain suspension enduro frame


Frame LightCarbon 2019 new all-mountain suspension enduro frame
Material High modulus Toray T700 carbon fiber
Size
15.5, 17.5, 19.5, 21 inch
Rear Travel 135~152mm
Headtube Tapered headtube ID φ44/56mm（use the Press-fit 44/56mm headset bearings）
Weight 2600g/17.5
Seatpost Diameter 31.6mm(dropper seat post insert length S-300/M-350/L-400mm
Bottom Bracket Press Fit BB92 boost （Compatible with ISCG-05 chain guide）
Max Tire Clearance 27.5* 2.6 ~3.0'' &29*2.4''
Max Compatible Chainring 34T
Chainline 52mm
Brake Type Post Mount Disc brake 180mm（Rear）
Front Derailleur Side Swing front derailleur compatible with Shimano E-type/Sram S3
Rear Shock
Shock eye-eye: 200-22-22x∅8.0 SHOCK TRAVEL:57MM rear travel 152mm

Shock eye-eye: 200-22-22x∅8.0 SHOCK TRAVEL:50MM rear travel 136mm

Shock eye-eye: 210-22-22x∅8.0 SHOCK TRAVEL:55MM rear travel 152mm

Shock eye-eye: 210-22-22x∅8.0 SHOCK TRAVEL:50MM rear travel 141.5mm

Shock eye-eye: 210-22-22x∅8.0 SHOCK TRAVEL:47.5MM rear travel 136mm

Dropout Thru Axle 12*148mm boost

SIZE   15.5''   17.5''   19.5''   21''
SEATPOST INSERT LENGTH   200mm   250mm   280mm   320mm
REACH   415mm   440mm   460mm   480mm
TOP TUBE LENGTH, HORIZONTAL   579.4mm   606.9mm   630.6mm   653mm
STACK   613.6mm   622.8mm   636.5mm   645.7mm
WHEELBASE   1165.8mm   1194.8mm   1220.8mm   1244.8mm
CHAINSTAY LENGTH   440mm   440mm   440mm   440mm
FRONT CENTER   727mm   755.9mm   781.9mm   805.9mm
BB DROP   25mm   25mm   25mm   25mm
BB HEIGHT   350mm   350mm   350mm   350mm
SEAT TUBE ANGLE   75°   75°   75°   75°
HEAD TUBE ANGLE   66.5°   66.5°   66.5°   66.5°
SEAT TUBE LENGTH   395mm   445mm   495mm   533mm
HEAD TUBE LENGTH   100mm   110mm   125mm   135mm
BIKE STANDOVER HEIGH(29“*2.35”)   766.5mm   785.5mm   799.9mm   817.9mm
FORK RAKE/OFFSET   51mm   51mm   51mm   51mm
FORK LENGTH, FULL   564mm   564mm   564mm   564mm
TRAIL   104mm   104mm   104mm   104mm

Here is the link to my listing.  https://www.pinkbike.com/photo/18793593/

Looking to build something around a 120mm fork.  Cannot seem to find a single thing about this frame.  I like the 110 rear travel and lightweight aspect.  68 HTA is nice as well.  Anybody here have any insight?
https://www.amazon.com/SPCYCLE-Suspension-Mountain-148x12mm-190x50mm/dp/B07R33KF1Q/ref=sr_1_16?keywords=spcycle&qid=1558292805&s=sporting-goods&sr=1-16&th=1&psc=1

Thanks for the info.  I would like to run a 35mm stem on a medium but like its been said- its a lot easier to run a slightly longer stem than try to shorten your top tube!