The Primer 18” is the ideal choice for riders who’ve outgrown a 16” but aren’t quite ready for a 20”.
The shorter chain stay, lighter wheels and size-specific, pro-style frame geometry makes it the go- to bike for serious BMXers in this size range. The Primer is packed with quality parts like Odyssey Springfield Brakes and a fully sealed cassette hub for reliability that you can count on every time.
Frame: Sunday Primer, 18.5" top tube, integrated 1-1/8" head tube
Fork: Sunday Primer, 18" fork w/ 2-piece steerer tube and welded pre-load
Handlebar: Sunday, 2-piece
Stem: Sunday Freeze front load, 48mm
Headset: FSA integrated, 1-1/8"
Alloy Cap: FSA aluminum cap
Brake Lever: Aluminum, U-brake compatible
Brakes: Odyssey Springfield U-brake
Brake Cable: Odyssey Quik Slic
Grips: Sunday Cornerstone
Seat: Sunday Badge, seat and post combo
Seat Post: Integrated
Seat Clamp: Sunday
Sprocket: Sunday Sabertooth v2, 25T, steel
Cranks: 140mm, 3-piece, chromoly
BB Parts: Sealed, Mid, 19mm
Pedals: Wellgo platform, plastic
Rims: P-7X aluminum, 18", 28H
Front Hub: Sunday, 28H, low-flange, loose-ball, 3/8" axle
Rear Hub: Sunday, 28H, sealed, 14mm axle w/ 9T Driver
Spokes: 14g steel, black
Tires: Sunday Current, 18 x 2.2" (F & R)
Chain: KMC S1
Approx. Weight: 23.3lbs (with brakes)
Top Tube Length: 18.5"
Head Tube Angle: 74.5°
Seat Tube Angle: 71°
Chainstay Length: 11.7-12.00”
Bottom Bracket Height: 10.35"
Standover: 7.5"
Rise: 7.65"
Width: 25.5"
Backsweep: 12°
Upsweep: 1°
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
