Sunday Primer BMX Bike Description:
The Sunday Primer BMX Bike is a great starting point for beginner riders, packed with quality features that go beyond the basics. It comes with durable chromoly 3-piece cranks, a sealed bottom bracket, and a sealed cassette rear hub for smooth, low-maintenance performance. While it sits on the entry-level side of Sunday’s lineup, the Primer still rocks pro-level geometry and a sleek, modern look. The 21" toptube version is perfect for taller riders, and the all matte dark brown colorway keeps things clean and stealthy. Whether you're just getting started or planning to upgrade down the line, the Primer is built to grow with you.
Specifications:
- Frame: Sunday Primer, high-tensile steel, integrated headtube
- Fork: Sunday Primer, high-tensile steel, 2-piece steerer tube, welded preload
- Bars: Sunday, high-tensile steel, 2-piece (28.5" Width) (9" Rise) (12° Backsweep) (4° Upsweep)
- Stem: Sunday Freeze top load (48mm)
- Headset: FSA Integrated (1-1/8")
- Grips: Sunday Cornerstone
- Cranks: 3-Piece, chromoly (170mm Length)
- Bottom Bracket: Sealed Mid (19mm)
- Pedals: FPD platform, plastic
- Sprocket: Sunday Sabertooth v2, steel (25T)
- Chain: KMC S1
- Front Hub: Sunday low-flange, unsealed (3/8" Axle)
- Rear Hub: Sunday sealed cassette (14mm Axle)
- Driver: 9 Tooth
- Front Rim: P-7X, aluminum (20") (36H)
- Rear Rim: P-7X, aluminum (20") (36H)
- Front Tire: Odyssey Path Pro OEM (20 x 2.4")
- Rear Tire: Odyssey Path Pro OEM (20 x 2.4")
- Seat: Sunday Badge (Combo)
- Seat Post: Combo (25.4mm)
- Seat Clamp: Sunday
- Brake Lever: Odyssey Springfield
- Brakes: Odyssey Springfield U-Brake
- Gyro: -
- Gyro Tabs: Drilled (Not Included)
- Brake Mounts: Welded
- Extras: Odyssey Quik Slic brake cable
- Color: Matte Dark Brown
- Weight: 25.8 lbs
Geometry:
- Toptube Length: 21"
- Chainstay Length: 13.2" - 13.5"
- Headtube Angle: 75°
- Seattube Angle: 71°
- Bottom Bracket Height: 11.5"
- Standover: 8.75"
- Sizing Guideline: 5' 9" - 6' 3"+ Rider Height
Sizes Available:
| Toptube |
Approximate Rider Height |
| 20" |
5' - 5'4" |
| 20.5" |
5'4" - 5'8" |
| 20.75" |
5'6" - 6' |
| 21" |
5'8" - 6'2" |
For assistance building your new bike, please check out our tech help section here for instructions and tips on how to build your bike to ensure it is safe.
Dan's Comp recommends riding with a helmet to protect that brain. Shop our selection of
freestyle helmets here.
Need help finding the right bike for you? Not sure what size would suit you best? Check out our BMX buyers guide video below!
Note: To ensure that every component on your bicycle is working properly, Dan's Comp recommends that all bikes be assembled by a qualified mechanic. Improper assembly of your bicycle may lead to premature wear or failure of individual components such as headsets, crank assembly and wheels. Failure to do so may void the manufacturer warranty.
This product is expected to become available for purchase on Wednesday, July 8, 2026
