Not too big. Not too small.

The Primer 18 is just the right size.

Built With Freestyle in Mind

The moment you hop on one of our bikes and pop that first wheelie, you’ll notice right away what sets our 18″ bike apart from the rest. We designed our frames with proper geometry that makes it respond just like a regular 20″ BMX bike. This means the little ones will have zero problems getting rad with the big kids.

Sunday Freeze Stem

Our popular aftermarket Front Load Freeze stem has a 48mm reach. The Freeze stem is the go to for Sunday team riders.

1-Piece Seat and Post Combo

Complete with Sunday Cornerstone branding.

Sunday Hubs

Sturdy 28 hole Sunday hubs feature a 9T Cassette driver in the rear.

Sunday Sprocket

Sabretooth style sprocket for an aftermarket feel.

Odyssey Springfield Brake and Quik Slic Kable

Odyssey’s newest brake comes standard on the 2015 models. This simple design allows for easy assembly and reliable daily use. Odyssey’s innovative one piece Quik Slic Kable allows for fast and easy assembly due to its integrated cable hanger design.

2015 Primer 18 Previous Model • View Current Bikes »

Not too big. Not too small. With 18″ wheels, the Primer 18 is just the right size.


Frame: 18.5" TT, Chromoly Dropouts
Fork: Primer 18" Fork w/ Chromoly Dropouts
Handlebar: Primer 18 7.65" Rise, 25.5" Width, 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

*Specs subject to change without notice.


Head Tube Angle: 74.5°
Seat Tube Angle: 71°
Chainstay Length: 11.75-12.00”
Bottom Bracket Height: 10.35"
Standover: 7.5"
Rise: 7.65"
Width: 25.5"
Backsweep: 12°
With Brakes: 23.3lbs