Built for young shredders who are ready to step up their riding, the updated Sunday Primer 18" delivers pro-level performance scaled down to fit smaller riders perfectly. By rebuilding the frame around lightweight aluminum, Sunday cut down critical weight without sacrificing the rugged durability the brand is known for, making it easier than ever for young riders to learn bike control, hop curbs, and dial in their first tricks at the skatepark.
Every component is chosen with reliability and confidence in mind. From the easy-to-pull Odyssey Springfield brake lever to the smooth, fully sealed 9-tooth cassette hub, the Primer 18" is built to withstand real street, park, and neighborhood sessions right out of the box.
Why the Aluminum Frame Upgrade Matters
Weight makes a huge difference when you're a developing rider. Steel frames can feel heavy and awkward to throw around when you're learning fundamentals. Upgrading to an engineered aluminum frame drops noticeable pounds off the bike. That means quicker accelerations, easier bunnyhops, and far less fatigue during long afternoons at the pump track. Paired with a redesigned Sunday Badge seat and post combo that offers a comfortable, level sitting position, it's the ideal setup for riders transitioning toward a full-sized 20" BMX machine.
Key Highlights
- All-New Lightweight Aluminum Frame: Shaves off excess weight so smaller riders can maneuver easily.
- 18" Pro-Style Geometry: Real BMX proportions scaled down for proper balance and progression.
- Fully Sealed 9t Cassette Hub: Smooth rolling with zero maintenance and dependable engagement every time they pedal.
- Odyssey Springfield Brake System: Quick, consistent stopping power with an easy lever reach designed for smaller hands.
- Odyssey Path Pro 18" Tires: High-volume, grippy rubber built to handle slick skatepark concrete and rough neighborhood pavement alike.
Component Highlights
- Frame: Sunday Primer 18", Aluminum Technology
- Stem: Sunday Freeze Front Load, 48mm reach
- Headset: FSA Integrated 1-1/8"
- Grips: Sunday Cornerstone
- Chain: KMC S1
- Seat & Post: Sunday Badge Combo (Level Position)
- Brake Lever: Odyssey Springfield Junior
- Brake Cable: Odyssey Quik Slic
Geometry Specifications
Frame Geometry
| Top Tube Length | 18.5" |
|---|---|
| Head Tube Angle | 74.5° |
| Seat Tube Angle | 71° |
| Chainstay Length | 11.7" to 12.0" |
| Bottom Bracket Height | 10.35" |
| Standover Height | 7.5" |
Handlebar Geometry
| Bar Rise | 7.65" |
|---|---|
| Bar Width | 25.5" |
| Backsweep | 12° |
| Upsweep | 1° |
Pro-Built and Ready to Roll
Every bike shipped from Bicycle Warehouse is unboxed, inspected, and pre-tuned by our pro mechanics before delivery. You will only need basic tools to install the front wheel, bars, and pedals so your young rider can hit the street in no time.
Sunday
Aluminum Primer 18" - Gloss Orange Soda / 18.5" TT / RHD
SKU: SBX-2757-ORGS
Built for young shredders who are ready to step up their riding, the updated Sunday Primer 18" delivers pro-level performance scaled down to fit smaller riders perfectly. By rebuilding the frame around lightweight aluminum, Sunday cut down critical weight without sacrificing the rugged durability the brand is known for, making it easier than ever for young riders to learn bike control, hop curbs, and dial in their first tricks at the skatepark.
Every component is chosen with reliability and confidence in mind. From the easy-to-pull Odyssey Springfield brake lever to the smooth, fully sealed 9-tooth cassette hub, the Primer 18" is built to withstand real street, park, and neighborhood sessions right out of the box.
Why the Aluminum Frame Upgrade Matters
Weight makes a huge difference when you're a developing rider. Steel frames can feel heavy and awkward to throw around when you're learning fundamentals. Upgrading to an engineered aluminum frame drops noticeable pounds off the bike. That means quicker accelerations, easier bunnyhops, and far less fatigue during long afternoons at the pump track. Paired with a redesigned Sunday Badge seat and post combo that offers a comfortable, level sitting position, it's the ideal setup for riders transitioning toward a full-sized 20" BMX machine.
Key Highlights
- All-New Lightweight Aluminum Frame: Shaves off excess weight so smaller riders can maneuver easily.
- 18" Pro-Style Geometry: Real BMX proportions scaled down for proper balance and progression.
- Fully Sealed 9t Cassette Hub: Smooth rolling with zero maintenance and dependable engagement every time they pedal.
- Odyssey Springfield Brake System: Quick, consistent stopping power with an easy lever reach designed for smaller hands.
- Odyssey Path Pro 18" Tires: High-volume, grippy rubber built to handle slick skatepark concrete and rough neighborhood pavement alike.
Component Highlights
- Frame: Sunday Primer 18", Aluminum Technology
- Stem: Sunday Freeze Front Load, 48mm reach
- Headset: FSA Integrated 1-1/8"
- Grips: Sunday Cornerstone
- Chain: KMC S1
- Seat & Post: Sunday Badge Combo (Level Position)
- Brake Lever: Odyssey Springfield Junior
- Brake Cable: Odyssey Quik Slic
Geometry Specifications
Frame Geometry
| Top Tube Length | 18.5" |
|---|---|
| Head Tube Angle | 74.5° |
| Seat Tube Angle | 71° |
| Chainstay Length | 11.7" to 12.0" |
| Bottom Bracket Height | 10.35" |
| Standover Height | 7.5" |
Handlebar Geometry
| Bar Rise | 7.65" |
|---|---|
| Bar Width | 25.5" |
| Backsweep | 12° |
| Upsweep | 1° |
Pro-Built and Ready to Roll
Every bike shipped from Bicycle Warehouse is unboxed, inspected, and pre-tuned by our pro mechanics before delivery. You will only need basic tools to install the front wheel, bars, and pedals so your young rider can hit the street in no time.
