Nahum lays down a perfect tabletop air on an 18″ Sunday Radocaster build. The Radocaster shares its proven geometry with the Sunday Primers.

The 2016 16″ and 18″ Sunday Primers are once again a perfect choices for younger shredders. In the past we’ve tested the Sunday Primers at BMX Groms and the Sunday Radocaster frame – which shares the same geometry – and been impressed.

Our Sunday Radocaster “Hands On” Review

Our Sunday Primer 16 and 18 Inch “Hands On” Review

Geometry

Sunday has taken the younger age group of riders seriously and developed it’s 16 and 18 inch frame geometry to feel the same as a 20″ BMX would to a larger rider. Last year when we tested the Radocaster frame we noticed our test rider progressing in some areas, within an hour of switching to the frame. Tricks such as half-cabs, 360’s and 540’s, higher hops and popping up into manuals are easier.

Highlights

Highlights include: the frame and forks feature cromo dropouts, they come with cromo cranks featuring mid sealed bottom brackets, seat/seatpost combos and Odyssey brakes.

The 16″ comes with a 16″ specific brake lever for those smaller hands, a 40mm reach top load stem and this year the 16″ comes with Sunday Current tires.

The 18″ comes with a Sunday Freeze frontload stem and Sunday cornerstone grips.

The stock Primers will be more than strong enough for most riders in the age range for these bikes. However if you get to the point you want to upgrade the 18″, you could buy the Sunday Radocaster full cromo frame and fork set, switch it up and you wouldn’t even have to get used to a new bike – the geometry is the same.

Verdict

If you’re thinking of purchasing a new bike and you like the Primers, BMX Grom’s verdict is: “Choose the right size and send it!”

Getting the right size bike is really important and Sunday has taken things a step further with their proportional geometry.

Specifications

PRIMER 16″ (Watermelon Green)

FRAME: 16.5” TT, Chromoly dropouts
FORK: 16” fork with 2PC Steerer tube, Chromoly dropout
HANDLEBAR: Primer 16 23” Width, 6.8” Rise, 12° Back, 1° Upsweep
STEM: Sunday Top-Load Stem 40mm
HEADSET: Sunday Sealed Integrated
HEADSET CAP: Sunday M6 AL Pre-Load Bolt
BRAKE: Odyssey Springfield
BRAKE CABLE: Odyssey Quik Slic
BRAKE LEVER: Sunday 16″ specific
GRIPS: Junior
SEAT: Junior Seat and Post combo
SEAT POST: Integrated
SEAT CLAMP: Sunday
SPROCKET: Sunday, 25T, steel
CRANKS: 140mm, 3-piece, Chromoly RHD
BB PARTS: 19mm sealed Mid
PEDALS: Wellgo Jr Plastic
RIMS: 16” rim, 20H
FRONT HUB: Sunday, 20H, Low-flange, Loose-ball
REAR HUB: Sunday, 20H, Semi-Sealed, 10T
SPOKES: Steel Black
TIRES: Sunday Current 16 x 2.1 (F & R)
CHAIN: KMC Z-410

PRIMER 18″

FRAME: 18.5” TT, Chromoly dropouts
FORK: 18 fork with 2PC Steerer tube, Chromoly dropouts
HANDLEBAR: Primer 18 25.5” Width, 7.65” Rise, 12° Back, 1° Upsweep
STEM: Sunday Front-Load Stem 48mm
HEADSET: Sunday Sealed Integrated
HEADSET CAP: Sunday M6 AL Pre-Load Bolt
BRAKE: Odyssey Springfield
BRAKE CABLE: Odyssey Quik Slic
BRAKE LEVER: Odyssey Springfield
GRIPS: Sunday Cornerstone
SEAT: Sunday Cloud Seat and Post combo
SEAT POST: Integrated
SEAT CLAMP: Sunday
SPROCKET: Sunday, 25T, steel
CRANKS: 155mm, 3-piece, Chromoly RHD
BB PARTS: 19mm sealed Mid
PEDALS: Sunday Plastic
RIMS: 18” rim, 28H
FRONT HUB: Sunday, 28H, Low-flange, Loose-ball
REAR HUB: Sunday, 28H, Semi-Sealed, 9T
SPOKES: Steel Black
TIRES: Innova 18 x 2.1 (F & R)
CHAIN: KMC Z-410

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Cam Girvin sends it in his new edit! The banger at the end is beast! This is a MUST WATCH!

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450 whips, flairs, double whips? Must Watch! How many 10 year old have a trick list like this one? It is also Kaden’s 11th Birthday, Happy Birthday Kaden!

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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

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

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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