Category Archives: BMX Bikes

Marcus Christopher 18″ Kink BMX Bike Check

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Marcus Christopher 18" Kink BMX Bike Check on BMX Groms
Marcus Christopher Ice Pick Stall BMX Sequence ShotName: Marcus Christopher
Age: 12
Height: 4′ 9
Weight: 92 lbs.
Hometown: Hartville, Ohio
Sponsors? Kink Bikes, Etnies Shoes, Dans Comp, Kali Protectives and Kid Dynamite Apparel
So you have a 20” BMX, but you are still riding your 18″. What made you decide to stick with the 18 for now? I have decided to stick with the 18″ for now because the 20″ is still a little too big. We increased the stem length on the 18″ and its just a better fit til I grow a few more inches.
Frame / Size: Kink Bantam 18″ with 18.5TT
Why did you choose that frame? Light only 4lb 8oz and love the colour
Forks: Kink Bantam Forks
Bars / Size: Kink K.C. Badger Bars 8″ Rise
Stem: Kink 53mm high rise stem.
Grips: ODI longneck grips.
Headset: Kink Headset
Seat: Shadow Conspiracy 1 piece seat.
Cranks: Profile 165mm Cranks
Sprocket: Profile 28t spline drive sprocket.
Chain: KMC K710 Chain
Tyres: United Direct tires on front and back 2.1.
Wheelset: Alienation Blacksheep hoops laced to Profile Elite Hubs front and back.
Pegs: Tree lite Pegs.
Pedals: SNAFU.
Brakes: Kink Desist Brakes and lever.
Special Mods: I use a piece of tire between the bottom bracket bearings and the bb spacer which prevents the cranks from spinning. This is so cranks are in the same place you left them when taking feet off to do tricks (see picture below).

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Marcus Christopher 18 inch BMX Bike Check Kink Bantam front view.

Marcus Christopher 18 inch BMX Bike Check Kink Bantam front wheel.

Marcus Christopher 18 inch BMX Bike Check Kink Bantam Rear.

Marcus Christopher 18 inch BMX Bike Check Kink Bantam Crankset

Sunday Radocaster 18 Inch BMX Frame and Fork Test

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BMX Groms Sunday Radocaster 18 inch BMX Frame and Fork Test and Review

The 18″ Sunday Radocaster is a unique frame and fork set offered by Sunday for the serious up-and-coming shredder. If you are into BMX and an average size 9 – 12 year old, this review is a “must read”.

This is the first year the Radocaster has been offered, so we were very interested to see what it would ride like. It features Sunday’s well thought out proportional frame geometry and slew of other features, such as:

  • Full chromoly throughout.
  • 8mm hollow dropouts.
  • Removable braking hardware.

Sunday build features like:

  • A miter cut top tube.
  • Reinforcing gusset at the down tube/head tube junction.

The fork:

  • One-piece, integrated-ready steerer tube.
  • Full-chromoly construction throughout.
  • Responsive 25mm fork rake.

At BMX Groms we were stoked to test an 18 inch frame where the company had seriously taken the time to consider every aspect of the frame including the geometry. Young riders are progressing quickly and companies are going to have to put the same amount the thought and design time into smaller frames, as they do into the common “20 inch” frames.

Sunday Radocaster 18 inch BMX frame and fork set as tested by BMX Groms.

Sunday Radocaster 18 inch BMX frame and fork set as tested by BMX Groms.

Bike Build and Finish

We had no problems building the frame and fork set up, all of our standard 18″ parts fit well. The frame uses a mid-bottom bracket and integrated headset. The finish looks good and the paint lasted well for our entire test which lasted for over a month. The frame comes in blue and the forks in black, unfortunately there are not other colour choices, but this is a higher end product for serious riders so we wouldn’t expect it to come in something like four colour choices.

BMX Groms Test

We choose two rad 11 year old BMX riders put the bike through some serious punishment.

Dorian Giordano, (Instagram: @dorian_bmx), was the smaller of the two riders. He regularly rides a 16″ BMX, so it was going to be interesting to see how he adapted to the larger 18″ Radocaster build. Unfortunately Dorian ended up with an injury just before our bike test, but he was still able to have a good session on the bike at Joyride 150 and give us some feedback. Dorian said the bike felt really good and that it was good for mannies, boxes and bike control and getting some nice height.

Nahum Billington, (Instagram: @chimpbmx), our other test rider usually rides an average geometry 18″ inch BMX. We were very interested to see how he adapted to Sunday’s proportional geometry. The Radocaster was a shorter frame overall, with a shorter rear triangle and a slightly longer top tube length. He adapted to the bike really quickly and on the first day was getting higher hops, better manuals, spins and learnt half cabs. In no time he was blasting 4 foot quarter pipe airs. When it came to hitting really large box jumps it took more of an adjustment, the shorter frame feeling more twitchy. However, at Joyride 150 Nahum found it easier to clear the box jumps on the Radocaster compared to his regular ride.

Nahum cranks an X-Up over a 7ft quarter on board the Sunday Radocaster 18" BMX Frame.

Nahum cranks an X-Up over a 7ft quarter on board the Sunday Radocaster 18″ BMX Frame.

Here is what Nahum had to say about the Radocaster:

The Sunday Radocaster is a really awesome 18” bike. The Radocaster frame gives the rider a bit more support because it is full chromoly. The shorter rear triangle on the bike lets you pop up unto your manuals easier. You can also  hop higher on the bike. The Sunday was also really good on the box jumps. The frame gives a lot more bike control because it is more twichy. I find on the bike you can spin a lot faster, than the 18” inch frames with long rear triangles. The forks are nice because they are full chromoly tappered forks, which lets you rely on them more. The color blue on the Sunday Radocaster is a good color for the bike. I also like the design of the graphics on it. Overall the Sunday is an awesome bike for riders that want a good bike with the right geometry.

Sunday Radocaster BMX Review Comment

Should you buy the Radocaster?

If you are a rad 18″ BMX rider who really wants to progress you should definitely be taking a serious look at the Radocaster. We feel that for the majority of riders the geometry will help them to progress. We actually watched our test rider Nahum, progress significantly during the month of riding the bike. If you are an insane trails rider who hits pro size transitions you may feel more comfortable on a longer frame, depending on your size.

Priced at under $300 in the USA.

12, 16, 18 Inch BMX Bikes at Interbike 2015

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Lucas and Nathan Halahan were stoked to be able to visit Interbike 2014. They sent in some pictures of the new 2015, 12, 16 and 18 inch BMX Bikes for all the groms out there.

Lucas and Nathan Halahan at Interbike 2014

Lucas and Nathan Halahan at Interbike 2014

The new 2014 Sunday Radocaster 18 and 20" BMX frames.

The new 2015 Sunday Radocaster 18 and 20″ BMX frames.

The new 2014 Sunday Primer and WeThePeople 18" Curse BMX

The new 2015 Sunday Primer and WeThePeople 18″ Curse

16 and 18" Subrosa and 18" Kink BMX at Interbike

16 and 18″ Subrosa and 18″ Kink BMX.

The WeThePeople 12, 16 and 18" bikes at Interbike 2014.

The WeThePeople 12, 16 and 18″ bikes.

2015 Sunday 16″ and 18″ Bikes

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The new 2015 16″ and 18″ Sunday BMX bikes. This is how to start out right in BMX! Check out what 10 year old Kaden Stone does on his Sunday Primer 16″ BMX! bmxgroms.com/sunny-day-bmx-park-kaden-stone/

Check out our extensive review of last years Sunday Primers here.

Sunday Blueprint 16″

MILITARY BLUE
FRAME: Blueprint 16, 16.5″ TT, Hi-Ten Frame
FORK: Blueprint 16″ Fork
HANDLEBAR: 6.8″ x 23″, 12° Back, 1° Up
STEM: Sunday Top-Load 40mm
HEADSET: Traditional 1-1/8″
HEADSET CAP: Alloy Cap w/ Star Nut
GRIPS: Junior
SEAT: Junior Seat
SEAT POST: 1″ Steel
SEAT CLAMP: Integrated
SPROCKET: Sunday , 30T, Steel
CRANKS: 140mm, 1-piece
BB PARTS: 19mm American
PEDALS: Junior Pedals
RIMS: 16″ Rim, 20H
FRONT HUB: Sunday, Low-Flange, Looseball, 20H
REAR HUB: Unsealed 20H, Coaster Brake, 14T Cog
SPOKES: Steel Black
TIRES: Sunday Current 16 x 2.1″ (F & R)
CHAIN: KMC Z41

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blueprint-16-details

Sunday Primer 16″

BLOOD ORANGE
FRAME: 16.5″ TT, Chromoly Dropouts
FORK: Primer 16″ Fork w/ Chromoly Dropout
HANDLEBAR: Primer 16 6.8″ x 23″, 12° Back, 1° Up
STEM: Sunday Top-Load 40mm
HEADSET: Sunday Integrated
HEADSET CAP: Sunday M6 Pre-Load Bolt
BRAKE LEVER: Sunday 16″ Specific
BRAKE: Odyssey Springfield
BRAKE CABLE: Odyssey Quik Slic
GRIPS: Junior
SEAT: Junior Seat and Post Combo
SEAT POST: Integrated
SEAT CLAMP: Sunday
SPROCKET: Sunday , 25T, Steel
CRANKS: 140mm, 3-piece, Chromoly
BB PARTS: 19mm Sealed Mid
PEDALS: Wellgo
RIMS: 16″ Rim
FRONT HUB: Sunday, Low-Flange, Looseball
REAR HUB: Sunday, Semi-Sealed, 10T Driver
SPOKES: Steel Black
TIRES: Sunday Current 16 x 2.1″ (F & R)
CHAIN: KMC Z410

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primer-16-details

Sunday Primer 18″

MILITARY BLUE
FRAME: 18.5″ TT, Chromoly Dropouts
FORK: Primer 18″ Fork w/ Chromoly Dropouts
HANDLEBAR: Primer 18 7.65″ x 25.5″, 12° Back, 1 Up°
STEM: Sunday Freeze Front-Load Stem 48mm
HEADSET: Sunday Integrated
HEADSET CAP: Sunday M6 Pre-Load Bolt
BRAKE LEVER: Odyssey Springfield
BRAKE: Odyssey Springfield
BRAKE CABLE: Odyssey Quik Slic
GRIPS: Odyssey Tom Dugan Signature
SEAT: Sunday Cloud Seat and Post Combo
SEAT POST: Integrated
SEAT CLAMP: Sunday
SPROCKET: Sunday , 25T, Steel
CRANKS: 155mm, 3-piece, Chromoly
BB PARTS: 19mm Sealed Mid
PEDALS: Sunday Plastic
RIMS: 18″ 28H Rim
FRONT HUB: Sunday, 28H, Low-Flange, Looseball
REAR HUB: Sunday, Semi-Sealed, 28H, 9T
SPOKES: Steel Black
TIRES: Innova 18 x 2.1″ (F & R)
CHAIN: KMC Z410

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primer-18-details
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