Shop Halfords exciting range of BMX bikes to support and develop your skills as a cyclist. BMX bikes offer more excitement than almost any other bike, and are specially designed for kids and adults who are passionate about jumps, tricks and stunts. Our BMX bikes are built to withstand the stress of the skate park and the street. Learn more about our range of BMX bikes below.

Back in stock after Christmas
X-Rated Spine BMX Bike - 20" Wheel
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X-Rated Spine BMX Bike - 20" Wheel 204229

X-Rated Spine BMX Bike - 20" Wheel is rated 4.6 out of 5 by 80.
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  • Age Range : 7 - 13+ years
  • Approximate Weight (KG) : 13.5kg
  • Tyres : Air Filled Rubber

Step 1: Select Quantity

For fitting, please change quantity to 1 and add each item and fit separately

Step 2: Personalise With A Name Sticker

Price: €6.00

Please note: Adding a name sticker can add up to 5 working days onto your order. For unbuilt bikes, the sticker will be included with your order but not applied to the bike.

Step 3: Would You Like It Built?


We can build your bike for you, you can either collect it in store or have it delivered. Learn more

  • €10.00 - Bike Built and Collected In-store (per bike)

Please note: If you select a Bike Build for collection in store you'll book a collection day and time to safely collect your bike. Once you have chosen a slot, this date and time is unable to be amended.

Step 4: Would you like Puncture Prevention?

Our puncture prevention comes with a two-year warranty. Learn more. 

Please note: Puncture prevention is only available on bikes built and collected in store. Unfortunately we cannot offer this service for bikes built and delivered to home or on unbuilt bikes 


Step 5: Select Buying Option

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X-Rated Spine BMX Bike - 20" Wheel

  • Age Range: 7 - 13+ years (suitable for both Children and Adults)
  • Approximate Weight (KG): 13.5kg
  • Brake Type: Front and rear U-Brakes
  • Tyres: Wanda Air Filled Rubber
  • Frame: Strong steel frame
  • Additional Features:
  • 33/14 gearing for quicker acceleration
  • Wanda colour wall tyres
BMX bikes are great fun for adventurous kids and tricksters who want to show off at the skate park, or just build up speed riding freestyle. The X-Rated Spine BMX bike is an excellent choice for kids aged 7+ who have mastered cycling and are looking to take trick riding to the next level with a BMX.

BMX bikes are great fun to ride and have a few features that mean they can handle ramps, kickers and rails with ease. The X-Rated Spine will certainly be able to keep up with the pace, with a sturdy steel frame, strong and lightweight alloy wheels and chunky Wanda tyres helping to soak up the hard landings and wipeouts that are part and parcel of BMX riding.
The X-Rated Spine BMX Bike also features front and back brakes for improved safety over other single-brake BMX’s, plus there’s a chain cover to help fingers and clothes from getting caught up. Looking good certainly isn’t difficult on the X-Rated Spine BMX Bike either, with a slick black finish, coloured tyre walls and a textured print saddle. It’s definitely a head turner!

If you're not quite sure where to start, check out our BMX Bikes Buyer's Guide for some helpful hints.

X-Rated Spine BMX Bike - 20" Wheel - Extra Info

Your mini BMX rider needs to both look the part and stay safe, so grab some additional accessories to fully kit them out! Help them to stay fashionable with a pair of X-Rated Fingerless BMX Gloves and to stay safe with the ultra-cool Mongoose Skull Kids’ Bike Helmet.

Free build on bikes (£/€250 and over) by our expert bike technicians. Learn more
Building a bike can be tough if you’ve never done it before, so save yourself a job by getting Halfords to build it for you! We’ll put your child’s X-Rated Spine BMX together quickly and safely, plus we’ll get rid of all the packaging.
Bike Maintenance
It’s likely that the X-Rated Spine BMX bike will get some serious usage, so make sure you keep your child’s bike in top condition with. We’ll give it a once over to check that everything is still in working order and that it’s safe to ride, as well as making any required adjustments. Don’t forget that you can always take the X-Rated Spine BMX Bike to your local Halfords store for as many free safety checks as you need.
Our Guarantee
We take the quality of our bikes seriously, which is why we offer a lifetime guarantee on the X-Rated Spine BMX Bike’s frames and forks.
*Please see our T&C's here

Size Guide

Wheel Size Age (Years) Height (Inch) Height (cm)
Balance First Bike 2' 11" - 3' 5" 88 - 105
12" 3 - 5 3' 3" - 3' 8" 98 - 112
14" 4 - 6 3' 5" - 3' 10" 105 - 117
16" / 18" 5 - 7 3' 8" - 4' 2" 112 - 127
20" 6 - 9 3' 10" - 4' 6" 117 - 136
24" 8 - 11 4' 2" - 4' 9" 127 - 145
26" 9 - 12 4' 6" - 5' 0" 138 - 154
For Children 11+ please consider our range of adult bikes. Below gives an indication of the sizes you should look for. (For accurate sizing please view size guide on individual bikes).
Frame Size Age (Years) Height (Inch) Height (cm)
14" 11 - 14 4' 10" - 5' 6" 148 - 168
14"/17" 12 - 15 5' 0" - 5' 8" 154 - 174
17" 13 - 16 5' 3" - 5' 10" 160 - 178