Diamondback Octane 20" Bike

Priced: $269.00
Diamondback Octane 20" Bike
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Color: Blue
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Diamondback Octane 20" Bike -

A do-it-all ride for kids ready to go off pavement, the Diamondback Octane 20 in. kids' bike features a shock-absorbent fork and tough aluminum frame to handle any terrain.

All bicycles sold at REI include a free warranty tune-up. New bikes go through a normal break-in period, after which readjustment is important for longevity and performance. Bring your new bike in to your local REI for its free tune-up within 20 hours of use or 6 months from purchase, whichever comes first. Contact your nearest REI bike shop to schedule this important service.



  • Sturdy frame is constructed out of heat-treated aluminum for durable performance; sloped top tube accommodates a short stand-over height


  • The rear derailleur hanger, a part that is particularly vulnerable to breakage from young riders, can be easily replaced and extends the usable life of the frame


  • Linear-pull brakes supply sure stopping power and speed management; brake levers are sized for small hands

Traction and Grip:

  • Shimano Revo twist shifter is easy to use—all a rider has to do is twist the grip-integrated shifter to change gears with a flick of the wrist


  • Trail XC suspension fork offers 30mm of travel to smooth out rough roads and take the jolts out of bumps and roots on the trail


  • 6-speed setup keeps it simple while offering a range of gears to tackle varying terrain; chain ring guard helps protect clothes from getting greasy or caught in the crankset
  • Specs are subject to change
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Activity:Mountain biking
Bike frame material:Aluminum
Bike style:Mountain bike
Bike suspension:Front suspension
Bike weight:How we measure bike weight
Bottom bracket:Looseball
Brake levers:Alloy linear
Brake type:Rim brake
Brakes:Alloy linear
Chain:KMC Z51
Crankset:140mm 1-piece 40t
Fork:Trail XC, 30mm travel
Front hub:Steel, 36h
Handlebar:Steel junior riser
Handlebar shape:Riser bar
Headset:Threaded 1"
Number of gears:6
Pedals:Resin platform
Rear cogs:Shimano MF-HG37, 14-28, 6-speed
Rear derailleur:Shimano TZ-50
Rear hub:Steel, 36h
Rims:R-1000 alloy
Saddle:Junior ATB
Seat post:Steel Pillar
Shifters:Shimano Revo Twist
Stem:Steel quill
Tires:Jr. ATB knobby 20 x 2.0
Wheel size:20 inches

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