PRODUCT DETAILS
The Primer 16” is better than ever and perfect for younger riders with lots of tricks up their sleeves.
The Primer rides like a pro-level bike that has been scaled down to meet the needs of smaller BMXers. Sunday's unique geometry helps them quickly adapt to bigger bikes as they grow. 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.
Key Features
- 16" Pro-Style Geometry
- Sunday Current 16" Tires
- 10t Cassette Hub
- 40mm Top Load Stem
- Odyssey Springfield Brakes
- FSA Headset
- KMC S1 Chain
Specifications:
- Frame: Sunday Primer, 16.5" top tube, integrated 1-1/8" head tube
- Fork: Sunday Primer, 16" fork w/ 2-piece steerer tube and welded pre-load
- Handlebar: Sunday, 2-piece
- Stem: Top load, aluminum, 40mm
- 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: Velo Junior
- Seat: Sunday Badge, seat and post combo
- Seat post: Integrated
- Seat Clamp: Sunday
- Sprocket: Sunday Sabertooth v2, 25T, steel
- Cranks: 127mm, 3-piece, chromoly
- BB Parts: Sealed, Mid, 19mm
- Pedals: Wellgo Junior platform, plastic
- Rims: P-7X aluminum, 16", 20H
- Front Hub: Sunday, 20H, low-flange, loose-ball, 3/8" axle
- Rear Hub: Sunday, 20H, sealed, 14mm axle w/ 10T Driver
- Spokes: 14g steel, black
- Tires: Sunday Current, 16 x 2.1" (F & R)
- Chain: KMC S1
- Approx. Weight: 23.3lbs (with brakes)
Frame Geometry
- Top Tube Length: 16.5"
- Head Tube Angle: 74.5°
- Seat Tube Angle: 71°
- Chainstay Length: 10.6"-10.85”
- Bottom Bracket Height: 9.25"
- Standover: 6.9"
Handlebar Geometry
- Rise: 6.75"
- Width: 23"
- Backsweep: 12°
- Upsweep: 1°
How to have more fun in the park
STEP 1
Select your products and proceed to checkout using secure payment methods.
STEP 2
Our team will carefully select your order from our warehouse and send it to you within 1-3 days
STEP 3
Ramp up the fun in the park!

Why choose us?
- Diverse Selection: Skates USA offers a wide variety of high-quality skateboards, bikes, skates, and scooters in various styles and colors from trusted brands—ensuring the perfect fit for every skill level.
- Expertise & Experience: With over 25 years in the skating industry, we provide expert guidance and top-quality products.
- Customer Satisfaction: Our online-only model guarantees fast service, reliable shipping, and a focus on meeting your needs.
- Affordable Quality: Get high-quality gear at affordable prices without compromising on performance.
- Free Shipping: Enjoy free U.S. shipping on orders over $50.
Frequently Asked Questions
What height and age rider is the Sunday Primer 16-Inch Complete BMX Bike designed for?
The Sunday Primer 16-Inch Complete BMX Bike is designed for younger riders roughly 3 feet 8 inches to 4 feet 6 inches tall, typically around 5 to 9 years old. It features a 16.5-inch top tube length, a 6.9-inch standover height, and short 10.6-inch to 10.85-inch chainstays that give smaller cyclists proportional control. Choosing a true 16-inch frame rather than sizing up to an 18-inch bike prematurely ensures the rider can comfortably reach the handlebars and maintain balance while learning tricks.\n\n
Is the Sunday Primer 16-Inch Complete BMX Bike suitable for a beginner or progressing young rider?
The Sunday Primer 16-Inch Complete BMX Bike is built for beginner and intermediate youth riders who want to learn freestyle tricks at the skatepark or on the street. Sunday engineered this model with pro-style proportional geometry, including a 74.5-degree head tube angle and a 9.25-inch bottom bracket height, allowing young riders to maneuver the bike similarly to a full-size 20-inch BMX. Features like a 40 mm top-load stem, an FSA integrated headset, and 23-inch wide handlebars help developing cyclists build proper technique for manuals, hops, and spins.\n\n
What drivetrain and braking specifications come on the Sunday Primer 16-Inch Complete BMX Bike?
The Sunday Primer 16-Inch Complete BMX Bike comes equipped with a fully sealed rear cassette hub featuring a 10T driver and a 14mm axle, paired with a 25T steel Sunday Sabertooth v2 sprocket. The drivetrain utilizes a 127 mm 3-piece chromoly crank set in a sealed 19 mm mid-bottom bracket along with a KMC S1 chain and Wellgo Junior platform pedals. For reliable braking, it includes Odyssey Springfield U-brakes controlled by an aluminum brake lever and an Odyssey Quik Slic cable.\n\n
How durable is the construction of the Sunday Primer 16-Inch Complete BMX Bike for trick riding?
The Sunday Primer 16-Inch Complete BMX Bike is constructed with chromoly dropouts on both the frame and fork to handle high-impact landings from skatepark riding. Durability is enhanced by 127 mm 3-piece chromoly cranks, a sealed mid-bottom bracket, and a sealed rear cassette hub that keep dirt out of critical rotating parts. The complete setup weighs approximately 23.3 pounds with brakes installed and rolls on 20-hole P-7X aluminum rims wrapped in Sunday Current 16 x 2.1-inch tires.\n\n
How does the Sunday Primer 16-Inch Complete BMX Bike compare to an 18-inch BMX bike or alternative 16-inch models?
Compared to larger 18-inch models, the Sunday Primer 16-Inch Complete BMX Bike offers a shorter 16.5-inch top tube, 127mm cranks, and a lower standover height suited specifically for younger riders who lack the physical leverage for bigger frames. Against competitor 16-inch models like the Cult Juvenile 16, the Sunday Primer includes aftermarket-grade components such as Odyssey Springfield brakes, an integrated FSA headset, and a fully sealed 10T cassette hub. Its scaled pro-style geometry ensures a seamless transition when the rider is eventually ready to move up to a larger BMX frame.\n\n























