Rolly Polly
by Kyoot
Meet the Rolly Polly
We took everything we loved about the Itty Bitty and turned it up a notch: custom triple-butted 4130 chromoly tubing, a stiffer UDH hanger for crisp shifting, beefy thru-axles, 165mm two-piece cranks, and fast-rolling hubs packed with secret Japanese bearings. Tough enough to pass ISO mountain bike standards, but still cute enough to turn heads.
The Rolly Polly stays true to our roots—no carbon forks, no internal cable spaghetti—just a durable, simple, fun-first frame that’s easy to wrench and ready to rip. With a longer seat tube for taller riders, a re-tuned wheelbase for more playful handling, and our signature SWAG (Small Wheel Adjusted Geometry), this bike is made for underbiking with maximum style. Whether you're commuting or causing chaos with your crew, the Rolly Polly’s got your back.
One size fits most (5’2”–6’3”). Our geometry grows with you as you raise the saddle.
Standover: 698mm (27.5")
Stack: 496mm
Reach: 390mm
Top Tube: 545mm
Seat Tube: 440mm
Specifications
Frame & Fork
• 100% 4130 triple-butted chromoly
• Integrated BMX-style headtube (Campy 45/45 size bearings)
• Water bottle mounts, rack mounts, and fender mounts
• Standard 68mm threaded bottom bracket
Wheels
• Front: 100mm x 12mm thru-axle
• Rear: 142mm x 12mm thru-axle, 6-bolt, Shimano 11-speed freehub body (6 pawls x 6 springs)
• Fits standard 20” (406) BMX tires, up to 2.5” wide
• Double-wall KYOOT 36-hole rims
• Max rotor size: 160mm (IS mount front and rear)
• SRAM UDH dropout
Component Spec
• PROMAX brakes, rotors, and levers
• microSHIFT 10-speed 1x drivetrain
• FSA headset
• Shimano bottom bracket
• KMC chain
Seatpost
• 31.6mm diameter
• Dropper post–ready (seat collar included)
Handlebar
• The Pawsome Bar: Custom 6061-T6 heat-treated aluminum
• 7.5” rise, 780mm width
• 6° upsweep, 20° backsweep
• 31.8mm clamp diameter
Drivetrain
• microSHIFT 10-speed trigger shifter & clutch derailleur
• microSHIFT Sword 1x crankset with 42T chainring (165mm arms)
• microSHIFT cassette: 11–38T (10-speed)
Made in Taiwan. Designed in Austin, TX.
Our raw frames are finished with a light clear coat to show off the welds and natural chromoly finish. They’ll develop a patina over time—something we love. If you're not into the lived-in look, we suggest going with one of our painted frame options.