Specialized 21 Hotrock 20


Your little tike might love to ride, but given that they're still growing like a weed, the big-kid-trail-shredder bike can probably wait a few years. That's why we made our Hotrock 20 with plenty of gear range to tackle the neighborhood hills, and enough front-end travel to ride beginner's trails confidently.



Of course, it also features a lightweight and toug 20-inch A1 Premium Aluminum frame that's designed to take a hit while they find their legs on the pump track. Chatter and bumps, meanwhile, are handled by the coil-sprung SR Suntour fork's 40mm of travel.

Then there are a whole host of other components that are plenty tough enough to stand up to your little ripper, so you can rest assured that you'll be spending more time riding with your kid and less time waiting in line at the repair counter.

  • Tough, light, and durable, the A1 Premium Aluminium frame is built to stand up to years of tough riding.
  • SR Suntour XCT-JR suspension fork offers 40mm of coil-sprung travel that smooths out bumpy, rough terrain.
  • 20-inch Renegade tires provide plenty of grip both on- and off-road.





FRAME - Specialized A1 Premium Aluminum, single-butted, unisex frame, replaceable derailleur hanger
FORK - SR Suntour XCT-JR, coil spring w/ preload adjust, 1-1/8" steerer, quick-release, V-brake & post-mount disc compatible, 40mm of travel
FRONT HUB - Alloy, loose ball bearings, bolt type, 32h
REAR HUB - Shimano Tourney, 7-speed freehub, 32h
SPOKES - Stainless, 14g
RIMS - 20" alloy, 16mm depth, 21mm internal width
INNER TUBES - Schrader valve
FRONT TYRE - Renegade, 26 TPI, wire bead, 20x2.1"
REAR TYRE - Renegade, 26 TPI, wire bead, 20x2.1"
CRANKSET - Forged alloy, square taper, 127mm w/ chainguard
BOTTOM BRACKET - BSA, square taper, E-type
SHIFT LEVERS - Shimano Tourney, grip shift, 7-speed
REAR DERAILLEUR - Shimano Tourney TX, 7-speed
CASSETTE - SunRace, 7-Speed, 11-34t
FRONT BRAKE - V-brake w/ tool-less reach adjust brake lever
REAR BRAKE - V-brake w/ tool-less reach adjust brake lever
HANDLEBARS - 580mm, aluminum, 5-degree backsweep, 25.4mm
GRIPS - Specialized, slip-on
STEM - 20-degree rise, 25.4mm
SADDLE - Specialized Kids' Henge
SEATPOST - Alloy, single-bolt, 27.2MM
SEAT BINDER - Bolt-type, 31.8mm
PEDALS - Nylon platform w/ reflectors