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Diamondback Octane 20" Boys' Bike - 2014


This product is no longer available, but don't go just yet.


  • Sturdy frame is constructed out of heat-treated aluminum for durable performance; sloped top tube accommodates a short stand-over height
  • 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
  • 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
  • Linear-pull brakes supply sure stopping power and speed management; brake levers are sized for small hands
  • 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
  • Specs are subject to change


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.

View all Diamondback Kids' Mountain Bikes

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Best Use Mountain biking
Frame Aluminum
Bike Suspension Front suspension
Fork Trail XC, 30mm travel
Crankset 140mm 1-piece 40t
Bottom Bracket Looseball
Shifters Shimano Revo Twist
Rear derailleur Shimano TZ-50
Rear cogs Shimano MF-HG37, 14-28, 6-speed
Number of gears 6
Brake Type Rim brake
Brakes Alloy linear
Brake Levers Alloy linear
Rims R-1000 alloy
Front hub Steel, 36h
Rear hub Steel, 36h
Wheel size 20 inches
Tires Jr. ATB knobby 20 x 2.0
Handlebar shape Riser bar
Handlebar Steel junior riser
Stem Steel quill
Seat post Steel Pillar
Saddle Junior ATB
Pedals Resin platform
Headset Threaded 1"
Chain KMC Z51
Weight Unavailable
Bike Weight Weight provided is that of the as-sold median size (or the average of two median sizes).
Gender Boys'

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