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  • Diamondback Octane Jr Girls' Mountain Bike (20-Inch Wheels)
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Diamondback Octane Jr Girls' Mountain Bike (20-Inch Wheels)


Currently unavailable.
We don't know when or if this item will be back in stock.
  • High-quality 20-inch girl's mountain bike
  • Heat-treated aluminum frame with replaceable derailleur hanger
  • 6-speed Shimano shifter, derailleur, and freewheel
  • 20-inch Jr. ATB Knobby tires with aluminum rims
  • Recommended for ages 8 to 12; lifetime frame warranty
Is this a gift? Please note that this item ships in its own packaging and cannot be gift-wrapped or concealed.

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Product Description

Amazon.com

It's your choice: you can get your kids off to a healthy start by buying them a trouble-free quality bike that gives them their first taste of freedom, or you can buy one with a price closer to free and make riding a source of frustration. Enter the Diamondback Octane Jr., a high-quality girl's mountain bike that's a TV's worst nightmare. The Octane Jr. is equipped with a number of quality replaceable parts, such as a heat-treated aluminum frame with a replaceable derailleur hanger; a 30mm suspension fork; a six-speed Shimano shifter, derailleur, and freewheel; aluminum rims; and alloy linear pull brakes. The features combine to make riding bicycles the liberating and healthy activity it should be.

Specifications:

  • Size: Jr. mountain 20-inch (wheels) girl's frame
  • Frame: DB 6061 heat-treated aluminum with replaceable derailleur hanger
  • Fork: Trail XC 30mm travel
  • Cranks: 140mm 1-piece, 40t
  • Bottom bracket: Looseball
  • Rear derailleur: Shimano TZ-50
  • Shifter: Shimano Revo 6-speed twist
  • Brake levers: Alloy linear with reach adjustment
  • Brakes: Alloy linear
  • Gear: Shimano MF-HG37 6-speed freewheel (14-28t)
  • Rims: 36H R-1000 alloy
  • Tires: Jr. ATB Knobby 20 x 2.0
  • Pedals: Resin
  • Handlebar: Steel Jr. Riser, 20.5 inches wide by 1-inch rise
  • Stem: Alloy quill
  • Seatpost: Steel pillar, 25.4mm
  • Seat: Jr. ATB 2-panel
  • Headset: 1-inch threaded
  • Colors: Pink
  • Chain: 1-inch threaded
  • Hubset: 36H nutted (front and rear)
  • Coaster spokes: 14g
  • Grips: DB Kraton
  • Extras: Clear coat, chainstay protector, rear derailleur guard

Manufacturer's Warranty
Lifetime on the frame, 5 years on the fork, 1 year on components, 1 year on labor for the frame, 30 days on labor for parts

Product Description

The Octane 20 is the perfect starter mountain bike for the little one who wants to take to the trails with mom and dad, or just get around the neighborhood and the park with ease.

Product Details

  • Shipping Weight: 33.2 pounds
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B002C8DET2
  • Average Customer Review: 4.9 out of 5 stars  See all reviews (9 customer reviews)
  • Amazon Best Sellers Rank: #422,625 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
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Customer Questions & Answers

Customer Reviews

4.9 out of 5 stars
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See all 9 customer reviews
My daughter loves her new bike.
D. Johnson
It was very easy to assemble, took me about 30 or 40 minutes.
B. Looney
It's very well built and easy for my daughter to use!
LTM

Most Helpful Customer Reviews

19 of 20 people found the following review helpful By Amanda Hubbard on September 12, 2009
Color Name: PinkSize Name: 20-Inch Wheels Verified Purchase
This is a very nice bike, packed nicely, was put together easily, I wouldn't have known how to adjust the brakes, no directions, but my hubby did :). It's great quality, but no kickstand so I'll have to buy one. My 8 year old loves the color its a pearly-pink, she is 4'5" with a 24" inseam and this bike is great for her, the 24" bike would have overwhelmed her because biking has been a challenge to her and she just learned to ride with no training wheels, but the seat is raised about what it shows in the picture(more then halfway up the bar) it can still be raised up a bit but you may opt for the Octane 24" if your child is close to this size or any bigger(go by inseam). I'm hoping she gets a couple years out of it, but I plan to pass it down to my 4 year old when she's about 6, so its a great buy for me in the longrun anyway. Its a dream compared to the cheap toy store bike she learned on, the old bike was heavy and awkward and by the time she was comfortable handling it she was way too big for it, I wish I had bought her a quality bike to begin with and maybe she would have learned easier, I'm very pleased I bought this bike enstead of going back to the toystore for a cheap one. The alluminum frame makes it lightweight and easy to handle.
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4 of 4 people found the following review helpful By LTM on June 13, 2011
Color Name: PinkSize Name: 20-Inch Wheels Verified Purchase
I bought this bike for my daughter almost 2 years ago and it still looks brand new! It's very well built and easy for my daughter to use! I highly recommend it!
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5 of 6 people found the following review helpful By Amazon Customer on January 7, 2010
Color Name: PinkSize Name: 20-Inch Wheels Verified Purchase
My daughter and I loved the bike. She doesn't ride well yet, so I purchased training wheels, but they simply will not stay on. Thus, I recommend that you purchase a bike with training wheels before you purchase this one. I am teaching her to ride, and since she's worried about her knees, I predict it will take 7 months or so! :) That said, the bike is light enough for her to drop without dropping it on herself when she feels herself falling over. The brakes work well, and overall, I think it's a good purchase.
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3 of 4 people found the following review helpful By GoodDad on November 1, 2011
Verified Purchase
Bought my 7-1/2 year old this new bike about 2 weeks ago now. Arrived very quickly with the free shipping. Saw other write-ups about hard twist shifter and impossible to move front shocks. Thought I would give my first impressions as I own my own high-end mountain bike which has Shimano equipment and SRAM Rock Shox front & rear supsension. Overall the bike build quality is very good: solid welds, good paint quality, and very good brakes. It does not weigh too much either. It took me about an hour or so to put it together: mostly assembled except the front head-set, front tire, saddle, and foot pedals. For some reason, the front forks were bound up, but after working side-to-side a while, it freed up - assume it needed to work the lubricant around (local bike shop also said this is a part that needs internal lubrication. The front shocks need to be lubricated to make them work better. I already had "Judy" butter for my other bike, so I just applied some and worked it in pressing down on the handlebars with my weight. It works as intended then. My daughter is quite impressed because it looks and works just like "daddy's" bike which she really admires. The twist shifter is not bad. It is a little hard to get back into 1st gear which is partly a matter of adjusting the rear derailleur settings. I was fiddling with it tonight and got it working okay, but you have to know what you are doing. There are ample instructions from Shimano, but you need a magnifying glass to read the small print. You can always take the bike to a shop to have it tuned-up if you are not mechanically inclined. This is a good idea anyway because they will oil your cables and chain, etc so everything is in tip top shape. A bike should be well maintained. If you prefer to buy a pre-assembled bike from one of the big box stores, don't expect to get anything nearly as good. It will essentially be a simple bike with very limited adjustments and no-name parts. Good luck with your shopping!
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3 of 4 people found the following review helpful By D. Johnson on September 21, 2010
Color Name: PinkSize Name: 20-Inch Wheels Verified Purchase
My daughter loves her new bike. It was worth the extra money for the quality components. The directions are useless, & the "tools" were missing. Good thing I have knowledge of bicycles, having assembled & maintained a motorized mountain bike in the past. I also own both standard, & metric allen tools which you need. After adjusting the brakes, & making sure everything was in order. This is a smooth, & easy to ride bike! The 5 stars is for the bike overall. The other issues are well below the top rating! I wouldn't try setting this bike up at home, unless you feel comfortable with bicycle tune ups & have good tools.
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