Blue Sky 20 LTD

On Sale!

Green color bike on supersale for the month of July. This bike is considered best in class and is custom-built just for you from the frame up in Fort Collins, Colorado. Due to the overwhelming order volume, please expect a shipping date of approximately 5-7 business days from your order date. Quality takes a little bit of time and these bikes are worth the wait so please plan ahead for birthdays, vacations and riding camps.


Gets our 28 tooth square tapered crankset and superlight rigid fork!

The lightest weight and lightest actuation for those littles…there is a reason we spec this one and not others out there!

Special April price!

Special April price!

Special April Price!

It’s a folding tire and has a reflective ring all the way around. If your ripper will ride this bike to school, or at night – this is the safest tire option.

Upgrade to the lightest production wheelset available! This is the same wheelset we use on our more expensive PRO model! Just 1050 grams!

SKU: BS20-022A-LTD-PK-28 Category: Tag:



Turquoise and LAVA out of stock, returning on September 15. Please contact us to get on our backorder list.

The Blue Sky 20 LTD offers the highest performance-to-value ratio in the 20" category! With 4 cool color options in stock to choose from, Jagwire slick-shifting cables designed for small hands, a wide-range 11-38 cassette, and Shimano MT201 hydraulic disc brakes—this is THE best 20" bike to elevate your kids' riding experience to the next level!


SHIMANO Hydraulic Disk Brakes Standard

We use PREMIUM components all the way around to create the lightest bike possible. Small details like category leading Jagwire slick cable housing provide easy shifting abilities where kids with small hands and maybe not as strong can actually shift gears!  Every detail has been taken into consideration so your kid has the absolute best riding experience. Pretty much every other kids bike on the market doesn't take this into consideration and just slap the cheapest shifter and even cheaper cable housing to hi a low price point. Cheaping out and skimping on quality parts is NOT our business model. We spec the absolute best on our Blue Sky 20 bikes.

Our Blue Sky 20 LTD uses the new 9 speed Microshift Advent 20" drivetrain, 11-38 cassette, our superlight direct mount cranks with 28 tooth chainring, lightweight wheels and the ability to even have a water bottle (even though the real estate is pretty tight in there, see below for confirmed bottle/cage fitment).


Assembled to Order in Colorado, USA

We are a small family business focused on building the best kids mountain bikes possible. We truly geek out on this stuff, just see our Instagram page for some examples. Each and every Trailcraft bike is meticulously assembled to order in Fort Collins, Colorado, USA. You can take comfort in knowing that when you place your bike order, your child's new dream bike is built by our master builders from the frame up, using American labor.


Are you in Australia, Japan, New Zealand, or other markets where you run your brakes opposite us? Left brake, rear - Right brake, front? No problem! We can set your brakes up MOTO style (as we call it) with ease!


This process may take a few more days compared to purchasing a "X brand" kids bike with one build option, most likely built and boxed in the Far East. There's nothing wrong with that, but we operate a bit differently; we're more of a custom shop. As a result, our bikes are significantly lighter, feature meticulous attention to detail, and boast higher quality. However, building a lightweight bike of this caliber takes a bit longer and requires some planning on your side. We promise the wait is worth it, and these bikes will elevate your kids' riding to the NEXT level!


Water Bottle Compatibility

"Once in a while, a bike comes along and blows your mind; this is one of them. Achieving a weight of 19 lbs makes it the lightest in class for 20-inch hardtails. With outstanding geometry, a phenomenal fork, and top-quality build, this bike is worth every penny for families who live and breathe mountain biking.- Colin, The Bike Dads

See The Bike Dads Blue Sky 20 Review for a great video review.



  • A simple one-option build weighing just 20.2 pounds WITH pedals!
  • Includes 4 classic color options.
  • Jagwire slick-shifting cables designed for small hands.
  • A wide-range 11-38 cassette and Shimano MT201 hydraulic disc brakes.



MODELBlue Sky 20 LTD
FRAMEBlue Sky 20 7000 series aluminum!
FORKTC30 suspension standard. Rigid Aluminum 6000 series fork optional (via checkbox)
HEADSETTrailcraft Precision Sealed Cartridge
REAR DERAILLEURMicroshift 9 speed
SHIFTERMicroshift 9 speed
BRAKESShimano MT201 Hydraulic
CRANKSTrailcraft Direct Mount
BARTrailcraft Alloy
GRIPSTrailcraft Lock-On
STEMTrailcraft, Length: 40mm
POSTTrailcraft 30.9
CASSETTEMicroshift 11-38
WHEELSETTrailcraft 20", 1350 grams alloy hubs
TIRESKenda Regolith 2.2"
Estimated Weight~20.2 pounds set up tubeless

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Geometry - Blue Sky 20(millimeters)
Seat Tube Length-Center to Top270
Top Tube Length (Horizontal)445
Top Tube Length (Actual)443
Chainstay Length340
Bottom Bracket Heightxxx
Seat Tube Angle (Actual)73 Degrees
Head Tube Angle68 Degrees
Wheel Base864
Standover Height508mm or 20 inches

Size Chart

Size Chart

Approximate Age5-8
Minimum Inseam21 inches
Height Range3'9"- 4'2"