Orbea MX20 Team Disc kids' mountain bike in very good used condition. Used but not abused by my daughter. Mechanically sound, has the usual marks from mountain biking (cable rub on the headtube, scuffs and scrapes here and there, etc.) but no significant damage. This is a very capable kids' mountain bike, it's made in Portugal, and even has internal shift cable routing. One owner. $429 + buyer pays shipping (check rates on bikeflights.com from shipping zip code 94002 for a 43" x 11" x 32" box) great for kids about 5-8 years old or so.

Cranks have been upgraded to Spawn 127mm aluminum 6061 T6 cranks with a 30T alloy narrow-wide chainring for better climbing ability than the stock 34T chainring. (Alloy Cranks – 127MM) The stock cranks have a weird 5-bolt pattern; the Spawn cranks are much better quality and have a standard 4-bolt 104BCD pattern, so replacement chainrings can be easily sourced if ever needed.

Tires are set up tubeless with Stan's tubeless Schrader valves, tape, and sealant, and have been upgraded to Brood Maxtion 20x2.20" tires - these are the best 20" kids' mountain bike tire on the market, they are lightweight, have kevlar beads, are tubeless compatible, and have a very similar tread pattern to the Maxxis Minion DHF. They cost $55 each new. (Brood Maxtion 20)

Grips have been upgraded to ODI ruffian lock-on (thinner than stock, better for smaller hands), and the stock plastic pedals have been replaced with Wellgo alloy pedals with removable/replaceable pins.

The stock crankset, tires and grips are included. Also included is a kids-sized Elite water bottle cage and 350ml water bottle that fits in the triangle (it's too small for standard size water bottes/cages).

From the manufacturer:

We all want our kids to fall in love with the freedom and joy of cycling. With Orbea's MX Kids lineup, finding a real machine that is scaled down for smaller riders becomes a reality. MX Kids bikes are among the lightest on the market and make use of smaller brake levers, saddles, and pedals so kids can enjoy comfort and control. Multiple wheel sizes, many configurations and, most importantly, a few color options make MX Kids the best catalyst for a growing passion.

The MX 20 Team Disc is built with a durable aluminum frame and a lightweight aluminum fork. The Shimano 8-speed rear derailleur is easy to use and offers a reliable shifting system that kids will love. A quick release seatpost clamp makes on-the-fly saddle height adjustments a breeze. Powerful hydraulic disc brakes add to its trail-shredding abilities, while the Kenda Small Block Eight tires are a great option for off-road riding.

Specs
Frame Hexatubing Aluminum, MX Compact Geometry, Internal cable routing, disc only
Fork Orbea Alu 20" disc only
Headset 1-1/8" Semi-Integrated
Rims Mach1 Klixx 23c Tubeless Ready
Tires Kenda 1047 20 x 2.10" 60TPI Wire bead DTC [upgraded to Brood Maxtion]
Crankset Alloy [upgraded to Spawn]
Chainrings 34t [upgraded to 30T]
Chain KMC Z8
Rear Derailleur Shimano Altus M310
Cassette/Rear Cogs Shimano HG31 11-34t 8-Speed
Shifters Shimano M310
Handlebars Orbea OC-I Riser 540mm
Stem Orbea OC-II
Brakes Shimano M396 Hydraulic Disc
Pedals Resin BMX [upgraded to Wellgo alloy]
Saddle Velo 7087
Seat Post Orbea OC 27.2 x 250mm

GEOMETRY (MM)
SIZE 20"
A: SEAT TUBE LENGTH 257
B: EFFECTIVE TOP TUBE 445
C: STACK 425
D: REACH 320
E: BB HEIGHT 237
F: BB DROP 16
G: HEAD TUBE LENGTH 95
H: HEAD TUBE ANGLE 66º
I: SEAT TUBE ANGLE 74º
J: STANDOVER HEIGHT 533
K: CHAINSTAY LENGTH 343
L: WHEELBASE 630