Description
Specifications
Geometry

PRODUCT INBOUND TO MESEROLL. ESTIMATED ARRIVAL 12/18/25

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.
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:

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:

Rise: 6.75"
Width: 23"
Backsweep: 12°
Upsweep: 1°

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.

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