Rokk 20"/22" Convertible Full Suspension Bike and the New Yama Jama 22" Hardtail from Spawn Cycles.

With over a decade of experience in building kids’ off-road bikes, we have watched young riders progress from balance bikes to podiums finishes at World Cup Downhill events.

We’ve consistently noticed that the transition from 20” to 24” wheels is the most difficult and awkward jump for kids’ to make. On bigger trails and at downhill bike parks, the ability to move to bigger wheels means more speed to clear obstacles and less fatigue on the braking bumps. No solution existed to bridge the gap in bike sizes for kids who have outgrown 20” bikes but are too small for the 24”s.

The World's First 20/22" Convertible Full Suspension Bike

We set out to solve this problem by developing the world’s convertible 20/22” full suspension mountain bike.  It has involved extensive investment in product development and tooling, but we are extremely proud to introduce the Rokk 20"/22” that bridges the gap between the traditional 20” and 24” bike sizes.

Rokk 20"/22" shown with 22" wheels.

The Rokk 22” starts with a 6061-T6 alloy full suspension frame with 100mm to travel provided by a Rock Shox Deluxe shock.  A flip chip out back by the SRAM UDH universal derailleur hanger shortens or lengthens the chainstay and sets the appropriate BB height for each wheel size.  The Brood Eldorado fork features 100mm of travel with adjustable rebound and lockout and an arch that will accommodate 22” tires when your young one is ready to move up.

Rokk 20"/22" shown with 20" wheels

The drivetrain starts with 130mm Brood Bike Co. Styx direct-mount crank using a SRAM-type interface and a sealed external bottom bracket. We add a Brood Bike Co. 30T narrow-wide alloy chainwheel and a SRAM GX derailleur and shifter combo to get things moving to the 11-36T 10-speed SRAM cassette.

Stopping is handled by the powerful SRAM Level hydraulic disc brakes.

Touchpoints matter for kids too, so we’ve topped things off with Brood Bike Co.Tenderiderz lock-on grips and the Brood Throne seat with a unique Pivotal mechanism that provides fore/aft adjustment and lowers the minimum seat height by an inch compared to the traditional railed seat.

The World's First 22" Hardtail Mountain Bike for Kids

If you are familiar with our trail bikes – the Yama Jama models- we proud to add the 22” Yama Jama to our line-up. If your kiddo is not quite tall enough for a 24” but you can tell that the 20” won’t last long, this is the bike for you! Yes, we made our own tubeless-ready rims and tires for these, too!

The New Yama Jama 22" Trail Bike

The Yama Jama 22” shares the majority of its componentry with the Yama Jama 20”, upsized exactly where it is needed.  The bike uses the newly developed Brood Maxtion tubeless ready 22” tires and 22” Brood TR27 rims along with a 100mm travel Brood Eldorado fork with clearance under the arch to fit a 22” tire.

Rokk 20", Rokk 22" and Yama Jama 22" are now available for pre-order for late September 2022 delivery in Canada and the USA. You can check how Pre-orders work by clicking here:

Have a Wheelie Good Day!

- Spawn Cycles