Jamis Bikes

Kid's X.24 Disc Bike


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  • Frame Fork: XC50 24", coil spring, 25.4mm stanchions, aluminum lowers, 50mm travel
  • Headset: VP threadless
  • Wheels: Alloy 36H black anodized disc rims, alloy 6-bolt disc hubs with QR, 14G nickel-plated spokes
  • Tires: CST MTB, 24 x 1.95” Derailleurs: Shimano TY300 rear and TZ500 top pull front
  • Shiftlevers: Shimano RevoShift 35, 2x7-speed
  • Chain: KMC Z51
  • Cassette: Shimano TZ500 freewheel, 14-28, 7-speed
  • Crankset: Forged alloy crank, 152mm, with 34/24T chainrings and protective outer rock-ring
  • BB Set: Sealed cartridge
  • Pedals: MTB platform, hi-impact resin
  • Brakeset: Tektro M280 mechanical disc, 160mm rotors and Shimano levers
  • Handlebar: MTB alloy riser, 6° sweep x 20mm rise x 580mm wide
  • Stem: MTB alloy threadless, 15° rise x 60mm extension
  • Grips: Kraton for Grip Shift
  • Seatpost: Alloy micro-adjust, 27.2 x 300mm, with 31.8mm alloy clamp
  • Saddle: Jamis MTB Youth
  • Sizes: 12”
  • Colors: Ano Black, Ninja Green, Powder Blue
  • Weight: 27.50 lbs


  • SIZE: 12"
  • TOP EFFECTIVE: 19.17/487
  • HEAD ANGLE: 70
  • SEAT ANGLE: 73
  • CHAIN STAY: 16.14/410
  • WHEEL BASE: 37.80/960
  • FORK RAKE: 1.77/45
  • BB HEIGHT: 10.91/277
  • HEAD TUBE: 3.54/90
  • STANDOVER: 23.90/607


Spec Sheet

NOTICE: Some products in this store can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Please check the product label for warning information. For more information go to P65Warnings.ca.gov. We cannot ship any products into California that are affected by Proposition 65.

SHIPPING CHANGES: Due to new sales tax rules in the state of Colorado, effective June 1, 2019, purchases made online through JAX Mercantile for customers in the state of Colorado will only be able to be shipped to addresses within JAX current tax jurisdictions in Fort Collins, Loveland, Lafayette, and Broomfield. Customers in the state of Colorado who do not have shipping addresses within these zip codes may still opt for in-store pickup at any JAX store location when making a purchase on the JAX website. Learn more on our shipping and returns page.

Customer Service: 1-800-336-8314 Monday - Friday 9am to 5pm MTN